Browsing by Author "Santrac, Nada (56016758000)"

Purpose: To evaluate the adverse outcomes after delayed breast reconstruction (DBR) by abdominal advancement flap (AAF) and permanent prosthesis in patients treated with mastectomy due to unilateral breast carcinoma, as well as to determine which factors are predictive for their occurrence. Methods: The study included 155 patients operated at the Institute for Oncology and Radiology of Serbia from 1996 to 2010. All patients had total mastectomy and axillary lymph node dissection, followed by specific oncological treatment. Patients were selected for DBR after complete diagnostic evaluation. Adverse events were evaluated in regard to patient, disease and prostheses-related factors. Results: During follow-up, DBR adverse events were observed in 23.23% of the patients - the majority (91.67%) had only one. The most frequent was capsule contracture (47.22%), followed by asymmetry (22.22%), infection (16.67%) and prosthesis rupture (16.67%). There were isolated cases of prosthesis prolapse and local disease recurrence. Infections were treated conservatively in all but one patient. Other events were managed by additional operation. Statistical analysis showed that complications occurred significantly more often in patients ≥51 years (vs 18-40, vs 41-50), disease stage IIb (vs Ia), T2 (vs TI) tumors and adjuvant radiotherapy (vs without). Prostheses-related factors were not significant for DBR complications, neither body mass index (BMI), nor smoking habits. Conclusions: DBR using AAF and permanent prosthesis is a safe technique with acceptable complication rate. It provides one-time surgery with satisfactory aesthetic results and good postoperative recovery. Most frequent complication is capsule contracture. Patients' age and irradiation of the chest wall after mastectomy are predictive factors for complications.

Purpose: To evaluate the adverse outcomes after delayed breast reconstruction (DBR) by abdominal advancement flap (AAF) and permanent prosthesis in patients treated with mastectomy due to unilateral breast carcinoma, as well as to determine which factors are predictive for their occurrence. Methods: The study included 155 patients operated at the Institute for Oncology and Radiology of Serbia from 1996 to 2010. All patients had total mastectomy and axillary lymph node dissection, followed by specific oncological treatment. Patients were selected for DBR after complete diagnostic evaluation. Adverse events were evaluated in regard to patient, disease and prostheses-related factors. Results: During follow-up, DBR adverse events were observed in 23.23% of the patients - the majority (91.67%) had only one. The most frequent was capsule contracture (47.22%), followed by asymmetry (22.22%), infection (16.67%) and prosthesis rupture (16.67%). There were isolated cases of prosthesis prolapse and local disease recurrence. Infections were treated conservatively in all but one patient. Other events were managed by additional operation. Statistical analysis showed that complications occurred significantly more often in patients ≥51 years (vs 18-40, vs 41-50), disease stage IIb (vs Ia), T2 (vs TI) tumors and adjuvant radiotherapy (vs without). Prostheses-related factors were not significant for DBR complications, neither body mass index (BMI), nor smoking habits. Conclusions: DBR using AAF and permanent prosthesis is a safe technique with acceptable complication rate. It provides one-time surgery with satisfactory aesthetic results and good postoperative recovery. Most frequent complication is capsule contracture. Patients' age and irradiation of the chest wall after mastectomy are predictive factors for complications.

Purpose: To evaluate the accuracy of intraoperative frozen section analysis (FSA) of sentinel lymph nodes (SLNs) mapped using methylene blue dye (MBD) and its usefulness for selecting patients with breast carcinomas and positive axillary lymph nodes (ALNs) for one-time axillary dissection. Methods: 152 female patients with T1/T2 breast carcinomas and clinically negative ALNs were selected for mapping using MBD (1%) from October 2010 to December 2011. Patients underwent FSA of mapped SLNs and ALN dissection. The accuracy of SLN-FSA was tested by comparing these findings with the definite histopathology (HP) of SLNs, as well as of other ALNs. Sensitivity, specificity, positive and negative predictive values were calculated. Results: There was a 98%-match between FSA and definite HP findings of SLNs, suggesting high accuracy of FSA in this series. None of 3 patients with false-negative SLNs on FSA had additional axillary nodal metastases. One out of 20 (5%) patients with metastases in other ALNs had "clear" SLNs, both on FSA and definite HP (false-negative). Accuracy reached 94.1%. Conclusions: SLN-FSA enables adequate selection of patients for one-time axillary node dissection. MBD mapping technique is cheap, feasible and enables easy and precise detection of the first draining ALNs. Using FSA of SLNs mapped with MBD, patients with breast carcinoma benefit from complete surgical treatment during one hospitalization, the risk of undergoing anaesthesia twice is reduced, as well as the treatment cost, which is important in developing countries.

Purpose: To evaluate the accuracy of intraoperative frozen section analysis (FSA) of sentinel lymph nodes (SLNs) mapped using methylene blue dye (MBD) and its usefulness for selecting patients with breast carcinomas and positive axillary lymph nodes (ALNs) for one-time axillary dissection. Methods: 152 female patients with T1/T2 breast carcinomas and clinically negative ALNs were selected for mapping using MBD (1%) from October 2010 to December 2011. Patients underwent FSA of mapped SLNs and ALN dissection. The accuracy of SLN-FSA was tested by comparing these findings with the definite histopathology (HP) of SLNs, as well as of other ALNs. Sensitivity, specificity, positive and negative predictive values were calculated. Results: There was a 98%-match between FSA and definite HP findings of SLNs, suggesting high accuracy of FSA in this series. None of 3 patients with false-negative SLNs on FSA had additional axillary nodal metastases. One out of 20 (5%) patients with metastases in other ALNs had "clear" SLNs, both on FSA and definite HP (false-negative). Accuracy reached 94.1%. Conclusions: SLN-FSA enables adequate selection of patients for one-time axillary node dissection. MBD mapping technique is cheap, feasible and enables easy and precise detection of the first draining ALNs. Using FSA of SLNs mapped with MBD, patients with breast carcinoma benefit from complete surgical treatment during one hospitalization, the risk of undergoing anaesthesia twice is reduced, as well as the treatment cost, which is important in developing countries.

Purpose: To present the experience of our center with cytoreductive surgery (CRS) and hyperthermic intrathoracic chemotherapy (HITHOC) in the treatment of various potentially resectable chemo-sensitive pleural malignancies, primary and metastatic, limited to the unilateral thoracic inlet, as well as to address potential extension of indications for this procedure. Methods: This retrospective study included patients treated with CRS+HITHOC at the Institute for Oncology and Radiology of Serbia from January 2018 to August 2021. Indications for CRS+HITHOC were: (1) potentially resectable chemo-sensitive primary or residual/recurrent thoracic malignancy, with no signs of disease outside the thoracic cavity, and (2) miscellaneous metastatic disease limited to the unilateral thoracic inlet. All HITHOC procedures were performed with 90 min cisplatin perfusion (100 mg/m2 in 1000 ml of 5%-glucose gradually heated to 42°C). Results: A total of 7 patients were included in this study, with a mean age of 41.43 ± 19.25 years (range: 16-62). R0 resections were achieved in all patients. All CRS+HITHOC procedures were uneventful, with no metabolic or hemodynamic disorders intraoperatively. Average follow-up was 25.71±9.83 months (range: 14-40). Overall survival rate was 100%. There were no local relapses in the thoracic cavity. Conclusions: This study showed that CRS+HITHOC procedure might be successfully used not only for current indications, but also for a limited metastatic disease of a primary outside the thoracic cavity. Larger, multicentric studies might provide more data on oncological outcomes and cost-effectiveness of this procedure. © 2021 Zerbinis Publications. All rights reserved.

Purpose: To present the experience of our center with cytoreductive surgery (CRS) and hyperthermic intrathoracic chemotherapy (HITHOC) in the treatment of various potentially resectable chemo-sensitive pleural malignancies, primary and metastatic, limited to the unilateral thoracic inlet, as well as to address potential extension of indications for this procedure. Methods: This retrospective study included patients treated with CRS+HITHOC at the Institute for Oncology and Radiology of Serbia from January 2018 to August 2021. Indications for CRS+HITHOC were: (1) potentially resectable chemo-sensitive primary or residual/recurrent thoracic malignancy, with no signs of disease outside the thoracic cavity, and (2) miscellaneous metastatic disease limited to the unilateral thoracic inlet. All HITHOC procedures were performed with 90 min cisplatin perfusion (100 mg/m2 in 1000 ml of 5%-glucose gradually heated to 42°C). Results: A total of 7 patients were included in this study, with a mean age of 41.43 ± 19.25 years (range: 16-62). R0 resections were achieved in all patients. All CRS+HITHOC procedures were uneventful, with no metabolic or hemodynamic disorders intraoperatively. Average follow-up was 25.71±9.83 months (range: 14-40). Overall survival rate was 100%. There were no local relapses in the thoracic cavity. Conclusions: This study showed that CRS+HITHOC procedure might be successfully used not only for current indications, but also for a limited metastatic disease of a primary outside the thoracic cavity. Larger, multicentric studies might provide more data on oncological outcomes and cost-effectiveness of this procedure. © 2021 Zerbinis Publications. All rights reserved.

Purpose: To analyze the correlation of primary tumor (PT) pathological characteristics (size, stage, type and grade) and the extent of initial surgical treatment of non small cell lung cancer (NSCLC) with the incidence and time to local recurrence (LR) and disease-free survival (DFS), as well as to determine in what way these parameters and LR localizations affect the possibility for surgical retreatment. Methods: The research was conducted on 114 patients with NSCLC and LR that had initial surgery in two reference institutes in Serbia from January 2002 to December 2010. PT size and disease stage were defined according to the revised 2004 WHO classification. PTs were grouped by size into 3 categories. Due to great diversity, surgical procedures were sorted into 6 operation types. Standard statistical methods and tests were used for data analysis. Results: Statistical analyses showed significant difference in DFS and LR reoperability that were related to PT size, disease stage and the extent of initial surgery. LR localization on the chest wall was favorable for secondary surgery due to LR. Conclusions: Squamous cell lung carcinoma relapses locally more frequently than other lung tumor types, and the commonest LR site is the chest wall. This localization provides high possibility for surgical retreatment. Adequate staging, proper indications for surgical treatment and quality surgery provide longer DFS in patients with NSCLC. All these suggest that the surgeon may be considered as the most significant factor of prognosis.

Purpose: To analyze the correlation of primary tumor (PT) pathological characteristics (size, stage, type and grade) and the extent of initial surgical treatment of non small cell lung cancer (NSCLC) with the incidence and time to local recurrence (LR) and disease-free survival (DFS), as well as to determine in what way these parameters and LR localizations affect the possibility for surgical retreatment. Methods: The research was conducted on 114 patients with NSCLC and LR that had initial surgery in two reference institutes in Serbia from January 2002 to December 2010. PT size and disease stage were defined according to the revised 2004 WHO classification. PTs were grouped by size into 3 categories. Due to great diversity, surgical procedures were sorted into 6 operation types. Standard statistical methods and tests were used for data analysis. Results: Statistical analyses showed significant difference in DFS and LR reoperability that were related to PT size, disease stage and the extent of initial surgery. LR localization on the chest wall was favorable for secondary surgery due to LR. Conclusions: Squamous cell lung carcinoma relapses locally more frequently than other lung tumor types, and the commonest LR site is the chest wall. This localization provides high possibility for surgical retreatment. Adequate staging, proper indications for surgical treatment and quality surgery provide longer DFS in patients with NSCLC. All these suggest that the surgeon may be considered as the most significant factor of prognosis.

Hypoparathyroidism (HPT) is one of the most frequent and severe complications of thyroid surgery. It is caused by intraoperative damage, devascularization or accidental removal of the parathyroid glands (PTGs). The incidence of postoperative HPT is directly proportional to surgery extent and surgeon’s experience. After 40 years of experience in thyroid surgery, the first author summarizes the already known surgical steps in thyroid surgery and adds some useful practical tips for in situ preservation of PTGs. Our surgical technique focuses on meticulous capsular dissection and preservation of the middle thyroid, Kocher’s vein trunk, as well as vein branches that accompany the posteri- or branch of the superior thyroid artery and inferior thyroid artery trunk. Ligation of all blood vessels should be as close as possible to the thyroid capsule. Identified PTGs should be de-attached from the thyroid capsule on the vascular pedicle without significant dislocation. PTGs preservation during central neck dissection (CND) can be facilitated by using methylene blue dye for sentinel lymph nodes biopsy. PTGs are not colored in blue, unlike central lymph nodes, which facilitates central neck dissection and reduces the possibility of accidental removal of PTGs. After several thousands of preserved PTGs using this original technique, a total prevalence of permanent HPT in the first author’s series is less than 0.5%. Following given key points and recommendations to surgical in situ preservation of PTGs, a surgeon can provide good outcome for patients after total thyroidectomy (with or without central neck dissection), regarding HPT as one of the most severe complications of thyroid surgery. © 2017 Zerbinis Publications. All rights reserved.

Hypoparathyroidism (HPT) is one of the most frequent and severe complications of thyroid surgery. It is caused by intraoperative damage, devascularization or accidental removal of the parathyroid glands (PTGs). The incidence of postoperative HPT is directly proportional to surgery extent and surgeon’s experience. After 40 years of experience in thyroid surgery, the first author summarizes the already known surgical steps in thyroid surgery and adds some useful practical tips for in situ preservation of PTGs. Our surgical technique focuses on meticulous capsular dissection and preservation of the middle thyroid, Kocher’s vein trunk, as well as vein branches that accompany the posteri- or branch of the superior thyroid artery and inferior thyroid artery trunk. Ligation of all blood vessels should be as close as possible to the thyroid capsule. Identified PTGs should be de-attached from the thyroid capsule on the vascular pedicle without significant dislocation. PTGs preservation during central neck dissection (CND) can be facilitated by using methylene blue dye for sentinel lymph nodes biopsy. PTGs are not colored in blue, unlike central lymph nodes, which facilitates central neck dissection and reduces the possibility of accidental removal of PTGs. After several thousands of preserved PTGs using this original technique, a total prevalence of permanent HPT in the first author’s series is less than 0.5%. Following given key points and recommendations to surgical in situ preservation of PTGs, a surgeon can provide good outcome for patients after total thyroidectomy (with or without central neck dissection), regarding HPT as one of the most severe complications of thyroid surgery. © 2017 Zerbinis Publications. All rights reserved.

Purpose: To register the frequency of central and lateral lymph node metastases (LNMs) from papillary thyroid microcarcinomas (PTMCs), and to assess whether sentinel lymph node (SLN) biopsy of the lateral compartment is an accurate technique to select patients with true positive but clinically negative lymph nodes for one-time selective lateral neck dissection (sLND). The correlation between tumor characteristics (size, multifocality, bilaterality, capsular invasion) and LNMs was analyzed. 0Methods: During a 10-year-period (2004-2013), 111 clinically NO patients with PTMCs had total thyroidectomy, central neck dissection and SLN biopsy of the lateral neck compartment in our institution. SLN mapping was performed by subcapsular injection of 0.2 to 0.5ml of 1% methylene blue dye. IfSLNs were positive on frozen section, one-time sLND was done. Results: Forty percent of PTMCs were multicentric. LNMs were detected in 25% of the patients and isolated central LNMs were found in 18% of the patients. Lateral LMNs were present in 7% of the patients, of which 4% were isolated, skip LNMs. All these patients had therapeutic sLND. Specificity and sensitivity of SLN biopsy were 100% and 57%, positive and negative predictive values were 100% and 97%, respectively. Method's accuracy was 97%. Conclusions: SLN biopsy of the lateral neck compartment is more precise than physical examination and ultrasonography for detection of lateral LNMs in clinically NO patients with PTMCs. Intraoperative assessment of lateral lymph nodes (SLNs) provides one-time therapeutic dissection for patients with occult LNMs at initial operation, reducing the need for additional operations. This method provides appropriate disease staging and optimizes treatment.

Purpose: To register the frequency of central and lateral lymph node metastases (LNMs) from papillary thyroid microcarcinomas (PTMCs), and to assess whether sentinel lymph node (SLN) biopsy of the lateral compartment is an accurate technique to select patients with true positive but clinically negative lymph nodes for one-time selective lateral neck dissection (sLND). The correlation between tumor characteristics (size, multifocality, bilaterality, capsular invasion) and LNMs was analyzed. 0Methods: During a 10-year-period (2004-2013), 111 clinically NO patients with PTMCs had total thyroidectomy, central neck dissection and SLN biopsy of the lateral neck compartment in our institution. SLN mapping was performed by subcapsular injection of 0.2 to 0.5ml of 1% methylene blue dye. IfSLNs were positive on frozen section, one-time sLND was done. Results: Forty percent of PTMCs were multicentric. LNMs were detected in 25% of the patients and isolated central LNMs were found in 18% of the patients. Lateral LMNs were present in 7% of the patients, of which 4% were isolated, skip LNMs. All these patients had therapeutic sLND. Specificity and sensitivity of SLN biopsy were 100% and 57%, positive and negative predictive values were 100% and 97%, respectively. Method's accuracy was 97%. Conclusions: SLN biopsy of the lateral neck compartment is more precise than physical examination and ultrasonography for detection of lateral LNMs in clinically NO patients with PTMCs. Intraoperative assessment of lateral lymph nodes (SLNs) provides one-time therapeutic dissection for patients with occult LNMs at initial operation, reducing the need for additional operations. This method provides appropriate disease staging and optimizes treatment.

Papillary thyroid carcinoma (PTC) arising in pyramidal lobe (PL) is very rare. The aim of this study was to determine the incidence of single PTC focus in PL and its lymphonodal metastases, as well as to present a single surgeon experience in management of PL PTC. We performed a retrospective analysis of records of all patients surgically treated for PTC in our institution from year 2003 to 2013. Only patients with single PTC focus in PL were included. Out of total 753 patients, majority (66.52%) had PTC focus in one of the lobes, while only 3 patients (0.4%) had solitary PTC focus in PL. They were all females, aged 36, 41 and 22. During surgery, methylene-blue dye was injected peritumorally. After frozen section analysis of excised PL and isthmus and confirmation of malignancy, we performed total thyroidectomy with central neck dissection, as well as sentinel lymph node biopsy in both jugulo-carotid regions. Pathology showed encapsulated PTC stage T1 and solitary metastasis in Delphian lymph node of the youngest patient. All patients were disease free in the follow-up. PTC single focus in PL is very rare and only individual experiences can be discussed regarding the extent of the surgery. © The Japan Endocrine Society.

Papillary thyroid carcinoma (PTC) arising in pyramidal lobe (PL) is very rare. The aim of this study was to determine the incidence of single PTC focus in PL and its lymphonodal metastases, as well as to present a single surgeon experience in management of PL PTC. We performed a retrospective analysis of records of all patients surgically treated for PTC in our institution from year 2003 to 2013. Only patients with single PTC focus in PL were included. Out of total 753 patients, majority (66.52%) had PTC focus in one of the lobes, while only 3 patients (0.4%) had solitary PTC focus in PL. They were all females, aged 36, 41 and 22. During surgery, methylene-blue dye was injected peritumorally. After frozen section analysis of excised PL and isthmus and confirmation of malignancy, we performed total thyroidectomy with central neck dissection, as well as sentinel lymph node biopsy in both jugulo-carotid regions. Pathology showed encapsulated PTC stage T1 and solitary metastasis in Delphian lymph node of the youngest patient. All patients were disease free in the follow-up. PTC single focus in PL is very rare and only individual experiences can be discussed regarding the extent of the surgery. © The Japan Endocrine Society.

[No abstract available]

Background: Recurrent laryngeal nerve (RLN) palsy rates vary from 0.5 to 10 %, even 20 % in thyroid cancer surgery. The aim of this paper was to present our experience with RLN liberations and reconstructions after various mechanisms of injury. Methods: Patients were treated in our institution from year 2000 to 2015. First group (27 patients) had large benign goiters, locally advanced thyroid/parathyroid carcinomas, or incomplete previous surgery of malignant thyroid disease. Second group (5 patients) had reoperations due to RLN paralysis on laryngoscopy. Liberations and reconstructions of injured RLNs were performed. Results: Surgical exploration of central compartment enabled identification of the RLN injury mechanism. Liberations were performed in 11 patients, 2 months to 16 years after RLN injury, by removing misplaced ligations. Immediate or delayed (18 months to 23 years) RLN reconstructions were performed in 21 patients, by direct suture or ansa cervicalis-to-RLN anastomosis (ARA). RLN liberation provided complete voice recovery within 3 weeks in all patients. Patients with direct sutures had better phonation 1 month after reconstruction. Improved phonation was observed 2-6 months after ARA in 43 % of patients. Conclusions: Vocal cords do not regain normal movement once being paralyzed after RLN transection, but they restore tension during phonation by reconstruction. Nerve liberation is a useful method which enables patients with RLN paresis/paralysis a significant improvement in phonation, even complete voice recovery. Reinnervation of vocal cords, using one of the mentioned techniques, should be a standard in thyroid and parathyroid surgery, with aim to improve quality of patient's life. © 2015 The Author(s).

The aim of this prospective study was to analyze accuracy of sentinel lymph node biopsy with methylene blue dye for intraoperative detection of lateral metastases in clinically N0M0 medullary microcarcinomas with calcitonin <1,000 pg/mL and selection of true-positive patients for one-time therapeutic lateral dissection. In addition to total thyroidectomy and central neck dissection, all patients had bilateral sentinel biopsy of jugulo-carotid regions after methylene blue injection to decide upon necessity for lateral dissection. If sentinels were benign on frozen section, additional non-sentinels were extirpated, with no further lateral dissection. If sentinels were malignant, one-time lateral dissection was performed. 20 patients were included in this study. Hereditary disease form was observed in 3/20 (15%) of patients with RET proto-oncogene mutation C634F; remaining 17/20 (85%) were negative for germline mutations. There were no allergic reactions to methylene blue and identification rate of sentinels was 100%. In total, 2/20 (10%) cN0 patients had lymphonodal metastases, thus were reclassified as pN1b. Remaining 18/20 (90%) were classified pN0 based on standard pathohistology. Frozen section findings on sentinels were 100% match with standard pathohistology, and there were no skip metastases in lateral compartments. Sensitivity, specificity and accuracy of sentinel biopsy method with methylene dye and frozen section were 100%. Dzodic’s sentinel lymph node biopsy method can be used for intraoperative assessment of lateral compartments and optimization of initial surgery of medullary microcarcinomas with calcitonin <1,000 pg/mL. This way, cN0 patients with sentinel metastases can receive one-time lateral dissection, and those without benefit from less extensive surgery. © The Japan Endocrine Society.

The aim of this prospective study was to analyze accuracy of sentinel lymph node biopsy with methylene blue dye for intraoperative detection of lateral metastases in clinically N0M0 medullary microcarcinomas with calcitonin <1,000 pg/mL and selection of true-positive patients for one-time therapeutic lateral dissection. In addition to total thyroidectomy and central neck dissection, all patients had bilateral sentinel biopsy of jugulo-carotid regions after methylene blue injection to decide upon necessity for lateral dissection. If sentinels were benign on frozen section, additional non-sentinels were extirpated, with no further lateral dissection. If sentinels were malignant, one-time lateral dissection was performed. 20 patients were included in this study. Hereditary disease form was observed in 3/20 (15%) of patients with RET proto-oncogene mutation C634F; remaining 17/20 (85%) were negative for germline mutations. There were no allergic reactions to methylene blue and identification rate of sentinels was 100%. In total, 2/20 (10%) cN0 patients had lymphonodal metastases, thus were reclassified as pN1b. Remaining 18/20 (90%) were classified pN0 based on standard pathohistology. Frozen section findings on sentinels were 100% match with standard pathohistology, and there were no skip metastases in lateral compartments. Sensitivity, specificity and accuracy of sentinel biopsy method with methylene dye and frozen section were 100%. Dzodic’s sentinel lymph node biopsy method can be used for intraoperative assessment of lateral compartments and optimization of initial surgery of medullary microcarcinomas with calcitonin <1,000 pg/mL. This way, cN0 patients with sentinel metastases can receive one-time lateral dissection, and those without benefit from less extensive surgery. © The Japan Endocrine Society.

Purpose: The aim of this research was to examine overall (OS) and disease-free survival (DFS) in patients with colorectal peritoneal carcinomatosis (CRC-PC), treated with cytoreductive surgery (CRS) and intraoperative hyperthermic intraperitoneal chemotherapy (HIPEC), as well as to analyse factors of prognostic significance. Methods: We included 61 patients with pathological/and computerized tomography (CT) confirmation of CRC-PC, treated with CRS+HIPEC from 2005 to 2012. Peritoneal Cancer Index (PCI) score was used for quantitative assessment of the CRC-PC extent. We performed CRS following the Sugarbaker's principles in all patients with PCI <20 and only in 3/61 (4.92%) patients with PCI >20. HIPEC (oxaliplatin 410 mg/m 2 in 2000mL isotonic solution and 41 °C) was performed using RanD Performer® HT perfusion system during 30-60 min. Cox proportional hazard regression was used to determine significant factors for OS and DFS. Results: The follow-up ranged from 1 to 83 months (median 22). Median OS was 51 months (95% confidence interval/CI 22+). Median DFS for patients without residual disease (57/61, 93.44%) was 23 months (95% CI 16+). One-, 2- and 6-year OS (DFS) were 78.6% (68.3%), 58.7% (46.7%) and 50.5% (38.1%), respectively. By the end of the study, 55.74% of the patients were still alive. Cox multivariate analysis indicated PCI score as a parameter of highly prognostic significance for patients treated with CRS+HIPEC (p<0.001). Patients with PCI <13 (vs PCI >13) had significantly longer OS and DFS (p<0.001), also confirmed for PCI subcategories (PCI <7 vs 7 < PCI < 13 vs PCI >13). All patients with PCI <7 are still alive. Conclusion: Our study indicates that CRS+HIPEC significantly improves the survival of CRC-PC patients. This treatment modality should be considered as the most suitable in well-selected patients with this disease.

Purpose: The aim of this research was to examine overall (OS) and disease-free survival (DFS) in patients with colorectal peritoneal carcinomatosis (CRC-PC), treated with cytoreductive surgery (CRS) and intraoperative hyperthermic intraperitoneal chemotherapy (HIPEC), as well as to analyse factors of prognostic significance. Methods: We included 61 patients with pathological/and computerized tomography (CT) confirmation of CRC-PC, treated with CRS+HIPEC from 2005 to 2012. Peritoneal Cancer Index (PCI) score was used for quantitative assessment of the CRC-PC extent. We performed CRS following the Sugarbaker's principles in all patients with PCI <20 and only in 3/61 (4.92%) patients with PCI >20. HIPEC (oxaliplatin 410 mg/m 2 in 2000mL isotonic solution and 41 °C) was performed using RanD Performer® HT perfusion system during 30-60 min. Cox proportional hazard regression was used to determine significant factors for OS and DFS. Results: The follow-up ranged from 1 to 83 months (median 22). Median OS was 51 months (95% confidence interval/CI 22+). Median DFS for patients without residual disease (57/61, 93.44%) was 23 months (95% CI 16+). One-, 2- and 6-year OS (DFS) were 78.6% (68.3%), 58.7% (46.7%) and 50.5% (38.1%), respectively. By the end of the study, 55.74% of the patients were still alive. Cox multivariate analysis indicated PCI score as a parameter of highly prognostic significance for patients treated with CRS+HIPEC (p<0.001). Patients with PCI <13 (vs PCI >13) had significantly longer OS and DFS (p<0.001), also confirmed for PCI subcategories (PCI <7 vs 7 < PCI < 13 vs PCI >13). All patients with PCI <7 are still alive. Conclusion: Our study indicates that CRS+HIPEC significantly improves the survival of CRC-PC patients. This treatment modality should be considered as the most suitable in well-selected patients with this disease.