Browsing by Author "Maksimović, Ruzica (55921156500)"

Background: Preoperative differentiation of ovarian malignant tumors still remains a challenge. Diffusion-weighted imaging (DWI) provides information about cellularity of the lesion and might facilitate discrimination between different malignant ovarian lesions. Purpose: To evaluate magnetic resonance imaging (MRI) findings of endometrioid adenocarcinoma of the ovary and to determine the value of DWI in the differential diagnosis of malignant and benign adnexal tumors. Material and Methods: The following MRI findings were reviewed in 162 patients (21 endometrioid adenocarcinoma, 103 other malignant tumors, 38 benign tumors): lesion size, morphological appearance, T2-weighted (T2W) signal intensity, T1-weighted (T1W) signal intensity, contrast-enhancement pattern, DWI signals with apparent diffusion coefficient (ADC) calculated for b800 s/mm2 in solid tumor components. Results: The most common morphological appearance was predominantly cystic lesion, found in 90.3% of patients with endometriod adenocarcinoma. The solid parts were slightly hyperintense on T2W images in 19 patients with marked enhancement after contrast administration. No significant difference (P0.13) in conventional MRI features was found between endometrioid adenocarcinoma and other malignant ovarian tumors. Hyperintensity on DWI was more frequently observed in malignant tumors than in benign lesions (P<0.001). ADC values were significantly lower in endometrioid adenocarcinoma than other malignant tumors (0.79=0.21 vs. 0.90=0.19; P0.04) and in all malignant lesions compared with benign tumors (0.88=0.31 vs. 1.33=0.17; P<0.001). Conclusion: DWI with ADC measurement could indicate the presence of endometrioid adenocarcinomas due to a slightly but significantly lower ADC values compared to other malignant ovarian lesions. Thus, DWI is beneficial and should be part of a standard protocol for the evaluation of indeterminate adnexal lesions. © The Foundation Acta Radiologica 2015.

Background: Preoperative differentiation of ovarian malignant tumors still remains a challenge. Diffusion-weighted imaging (DWI) provides information about cellularity of the lesion and might facilitate discrimination between different malignant ovarian lesions. Purpose: To evaluate magnetic resonance imaging (MRI) findings of endometrioid adenocarcinoma of the ovary and to determine the value of DWI in the differential diagnosis of malignant and benign adnexal tumors. Material and Methods: The following MRI findings were reviewed in 162 patients (21 endometrioid adenocarcinoma, 103 other malignant tumors, 38 benign tumors): lesion size, morphological appearance, T2-weighted (T2W) signal intensity, T1-weighted (T1W) signal intensity, contrast-enhancement pattern, DWI signals with apparent diffusion coefficient (ADC) calculated for b800 s/mm2 in solid tumor components. Results: The most common morphological appearance was predominantly cystic lesion, found in 90.3% of patients with endometriod adenocarcinoma. The solid parts were slightly hyperintense on T2W images in 19 patients with marked enhancement after contrast administration. No significant difference (P0.13) in conventional MRI features was found between endometrioid adenocarcinoma and other malignant ovarian tumors. Hyperintensity on DWI was more frequently observed in malignant tumors than in benign lesions (P<0.001). ADC values were significantly lower in endometrioid adenocarcinoma than other malignant tumors (0.79=0.21 vs. 0.90=0.19; P0.04) and in all malignant lesions compared with benign tumors (0.88=0.31 vs. 1.33=0.17; P<0.001). Conclusion: DWI with ADC measurement could indicate the presence of endometrioid adenocarcinomas due to a slightly but significantly lower ADC values compared to other malignant ovarian lesions. Thus, DWI is beneficial and should be part of a standard protocol for the evaluation of indeterminate adnexal lesions. © The Foundation Acta Radiologica 2015.

65-year-old man was evaluated because of vomiting and epigastric pain. The patient underwent upper gastrointestinal endoscopy and endoscopic ultrasound examination and was found to have multiple polypoid lesions in the D1 and D2 portions of the duodenum, causing almost complete obstruction of the duodenal lumen. The lesions were hyperintense on T1-weighted and intermediately intense on T2-weighted images, with a drop in signal on T1- and T2-weighted fat-suppressed images, consistent with a diagnosis of duodenal lipomas. Pathohistological examination confirmed the diagnosis of duodenal lipomas. © Japan Radiological Society 2012.

Hemodynamic instability is the major concern in surgical patients with pericardial diseases, since general anesthesia and positive pressure ventilation may precipitate cardiac tamponade. In advanced constriction diastolic impairment and myocardial fibrosis/atrophy may cause low cardiac output during and after surgery. Elective surgery should be postponed in unstable patients with pericardial comorbidities. Pericardial effusion should be drained percutaneously (in local anesthesia) and pericardiectomy performed for constrictive pericarditis before any major surgical procedure. In emergencies, volume expansion, catecholamines, and anesthetics keeping cardiac output and systemic resistance should be applied. Etiology of pericardial diseases is an important issue is the preoperative management. Patients with neoplastic pericardial involvement have generally poor prognosis and any elective surgical procedure should be avoided. For patients with acute viral or bacterial infection or exacerbated metabolic, uremic, or autoimmune diseases causing significant pericardial effusion, surgery should be postponed until the causative disorder is stabilized and signs of pericarditis have resolved.