Browsing by Author "Grubor, Nikica (6701410404)"

Background. Littoral-cell angioma (LCA) is a recently described benign vascular tumor of the spleen, whose imaging and pathologic characteristics have been discussed only by a few authors. The tumor is characterized by a mixture of papillary and cystic areas lined by neoplastic cells deriving from normal splenic lining - littoral cells. The neoplastic LCA cells express both endothelial and histiocytic antigens associated with CD8 negativity, compared with the normal endothelium of the venous sinuses of the spleen red pulp that only expresses endothelial antigens and CD8 positivity. Therefore, the typical and characteristic immunohistochemical pattern of the LCA is as follows: CD31, CD68, CD163, CD21, FVIII antigen positive; CD34, CD8 negative. Case report. We reported a 60-year-old male with moderate nodular splenomegaly with one large hypoechogenic solid lesion and mild thrombocytopenia in whom the diagnosis of LCA was made after the elective splenectomy. Namely, histopathological and immunohistochemical data allowed a final diagnosis of classical LCA in spite of CD21 negativity. As far as we know this is the first reporeted CD21-negative LCA patient. Histological specimens were presented and differential diagnoses discussed. Conclusion. Littoral-cell angioma is a very rare benign splenic neoplasm that should be considered in the differential diagnosis of multinodular splenomegaly, particularly if the patient has the signs of hypersplenism.

Introduction: Biliobronchial fistula is rare. Very rarely it may be congenital, more frequently it is acquired as a complication of the hydatide cyst of the liver, pyogenic abscess, serious trauma and resection of the liver as well as recurrent cholangitis due to benign bile duct stricture or cholangtolithiasis. The main causes of the biliobronchial fistula are billiary obstruction and infectious lesion (abscess) in the liver. Case Outline: We present a 56-year-old man with benign stricture of the hepaticojejunostomy performed after operative common bile duct injury, who developed biliobronchial fistula following repeated percutaneous drainage of the liver abscess and percutaneous dilatation of the strictured anastomosis. Over the years the patient developed atrophy/hypertrophy complex, portal hypertension, grade II esophageal varicosities, ascites and splenomegaly. Although biliobronchial fistula was solved by a successful surgical reconstruction (new wide hepaticojejunostomy), the operation had a limited value as it was performed late after permanent lesions of the liver and intrahepatic bile ducts had already developed. Conclusion: Surgical reconstruction of strictured biliodigestive anastomosis should be considered on time as a possibly better solution than percutaneous dilatation. According to the authors' knowledge, a similar case of biliobronchial fistula as a complication of percutaneous dilatation of the benign biliary stricture has not been reported before in the literature.

Tumors of the inferior vena cava (IVC) are rare and usually malignant and they can be primary and secondary. The most common primary tumor of the IVC is primary leiomyosarcoma. The first case of primary IVC leiomyosarcoma has been described in 1871 [1].The total number of 218 cases has collected until 1996 [2]. After that, three large single center series of these tumors emerged [3-5]. Present a series of five cases of these tumors. All the patients underwent a wide complete resection of tumors and the reconstruction with Dacron grafts. One patient died 19 months after the surgery, while the remaining ones survived without a local and system disease relapse. Although a surgical resection combined with the chemotherapy is often not curative, it can achieve a significant long-term survival. For this reason, we recommend the aggressive surgical management using the modern vascular surgical and oncology techniques. © 2024 Published by Oxford University Press and JSCR Publishing Ltd.

The key to the successful management of pancreatic cystic neoplasm (PCN), among which intraductal papillary mucinous neoplasm (IPMN) is the one with the highest risk of advanced neo-plasia in resected patients, is a careful combination of clinical, radiological, and histopathological findings. This study aims to perform the comparison of a preoperative evaluation with pathological reports in IPMN and further, to evaluate and compare the diagnostic performance of European evidence-based guidelines on pancreatic cystic neoplasms (EEBGPCN) and Fukuoka Consensus guidelines (FCG). We analyzed 106 consecutive patients diagnosed with different types of PCN, among whom 68 had IPMN diagnosis, at the Clinical Center of Serbia. All the patients diagnosed with IPMNs were stratified concerning the presence of the absolute and relative indications according to EEBGPCN and high-risk stigmata and worrisome features according to FCG. Final histopathology revealed that IPMNs patients were further divided into malignant (50 patients) and benign (18 pa-tients) groups, according to the pathological findings. The preoperative prediction of malignancy according to EEBGPCN criteria was higher than 70% with high sensitivity of at least one absolute or relative indication for resection. The diagnostic performance of FCG was shown as comparable to EEBGPCN. Nevertheless, the value of false-positive rate for surgical resection showed that in some cases, overtreating patients or treating them too early cannot be prevented. A multidisciplinary approach is essential to adequately select patients for the resection considering at the same time both the risks of surgery and malignancy. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Introduction Cystic dystrophy of the duodenal wall is a rare complication of the ectopic pancreas that is characterized by cyst/s formation within thickened duodenal wall. Case Outline A 61-year-old male with recurrent abdominal pain, weight loss (about 25 kg) who had been moderate alcohol abuser and heavy smoker was presented. On ultrasonography, very thickened duodenal wall (2.5 cm), an enlarged head of the pancreas with cyst of 3 cm in diameter as well as dilated pancreatic duct (<6 mm) were seen. Barium meal showed stenosis of the first and second part of the duodenum. CT and endoscopic ultrasound confirmed the ultrasonographic finding. The patient underwent surgery. The pathologic finding was established only on first two portions of the duodenum and limited part of the head of the pancreas along duodenum while the rest of the pancreas was normal. Due to poor general condition, gastrojejunostomy was performed. Although some improvement was evident, the patient did not become asymptomatic, and, therefore, four months later a cephalic duodenopancreatectomy was carried out which made him fully asymptomatic. A year later, the patient was symptom-free and in good health. Histologic examination showed a cystic dystrophy of the duodenal wall in the ectopic pancreas. Conclusion Unless there are strong contraindications, cephalic duodenopancreatectomy is best treatment of the disease.

Introduction Extra-pancreatic complications of acute and chronic pancreatitis that do not relate to vital organs are rare. The most common include subcutaneous paniculitis, arthritis, bone marrow fat necrosis, and vasculitis. These associated conditions have been termed pancreatic disease syndrome (PDS), which can occur not only with pancreatitis but also in other pancreatic diseases. PDS is believed to be caused by circulating pancreatic enzymes, which can occur when the pancreas is in direct communication with the circulation. Pancreatic pseudocyst erosion into the superior mesenteric and portal veins is extremely rare; and there have only been 22 previously reported cases in literature. The authors endeavoured to describe a manifestation of PDS with formation of a pseudocystic-portal fistula, its complications, and propose adequate surgical management. Case outline We present a 37-year-old man with chronic alcoholic pancreatitis and a pancreatic pseudocyst within the head of the pancreas which communicated with the main pancreatic duct on one side and eroded into the superior mesenteric and portal veins on the other, causing erythema nodosum-like vasculitis, and polyarthritis. The patient was initially treated conservatively, but subsequently required multiple arthrotomies and finally underwent pylorus preserving duodenopancreatectomy and direct repair of the affected veins. Conclusion The majority of cases required aggressive surgical intervention due to heightened risk of hemorrhage. In patients who develop disseminated fat necrosis, an earlier surgical intervention can be justified. The authors would recommend that, where practical, a pylorus-preserving pancreaticoduodenectomy should be performed. © 2021, Serbia Medical Society. All rights reserved.

Intrahepatic cholangiocarcinoma (ICC) is the second most common primary hepatic malignancy, with mass-forming growth pattern being the most common. The typical imaging appearance of mass-forming ICC (mICC) consists of irregular ring enhancement in the arterial phase followed by the progressive central enhancement on portal venous and delayed phases. However, atypical imaging presentation in the form of hypervascular mICC might also be seen, which can be attributed to distinct pathological characteristics. Ancillary imaging features such as lobular shape, capsular retraction, segmental biliary dilatation, and vascular encasement favor the diagnosis of mICC. Nevertheless, these radiological findings may also be present in certain benign conditions such as focal confluent fibrosis, sclerosing hemangioma, organizing hepatic abscess, or the pseudosolid form of hydatid disease. In addition, a few malignant lesions including primary liver lymphoma, hemangioendothelioma, solitary hypovascular liver metastases, and atypical forms of hepatocellular carcinoma (HCC), such as scirrhous HCC, infiltrative HCC, and poorly differentiated HCC, may also pose a diagnostic dilemma by simulating mICC in imaging studies. Diffusion-weighted imaging and the use of hepatobiliary contrast agents might be helpful for differential diagnosis in certain cases. The aim of this manuscript is to provide a comprehensive overview of mICC imaging features and to describe useful tips for differential diagnosis with its potential mimickers. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.

Introduction Malignant melanoma is a tumor of the melanocytes and is one of the most aggressive tumors. In most cases, the first symptoms appear in the metastatic phase of the disease. In clinical practice, malignant melanoma very rarely metastasizes to the gallbladder. Modern diagnostic methods include 18F-fluorodeoxyglucose positron emission tomography, new computed tomography protocols, new nuclear magnetic resonance for melanoma protocols, and contrast-enhanced ultrasound. The article aims to emphasize the necessity of radical surgical treatment of metastatic melanoma of the gallbladder. Case outline We present a rare case of metastatic malignant melanoma of the gallbladder, which was treated with cholecystectomy and radical surgical excision of all metastatic lesions. Conclusion All patients with a positive anamnesis for malignant melanoma require to be checked for the spread of the disease to the gallbladder and subsequent surgical treatment. © 2024, Serbia Medical Society. All rights reserved.

Introduction Biliary cystadenomas of the liver are rare benign tumors prone to malignant alteration so that a total excision is recommended. Objective The aim of the paper is to present our experience in treatment and to evaluate whether a simple ablation represents the appropriate treatment. Methods Over a 10-year period 25 patients (24 women) of the average age of 58 years suffering from cystadenomas of the liver, 18 in the right, 4 in the left and 3 in both lobes of the liver were operated. Twenty-three patients had a single lesion, while two patients had 3 and 6 lesions, respectively. Pain was present in 20, occasional vomiting in 4, discomfort in 2 and a sense of fullness in 2 patients. Three patients were jaundiced, 1 due to cystadenoma of the liver, 2 due to concomitant tumors of the head of the pancreas, while 5 patients had concomitant diseases. Results A total ablation was performed in 22 patients, left lateral bisegmentectomy in 1 and partial excision in 2 patients. Six additional procedures were performed. Five cystadenomas of the liver had "ovarian like" stroma, all in women. A focal malignant alteration was found in 2 patients aged 66 and 79 years, respectively. Recurrence was registered in 1 female patient in whom a partial excision had been done. Two patients with concomitant malignancy and 1 patient who developed malignant histiocytosis six months after surgery, died after 1, 2 and 3 years, respectively. Conclusion Biliary cystadenomas of the liver may be misdiagnosed as simple liver cysts, so that "frozen section" histology is highly recommended. In most cases the tumor may be successfully treated by ablation up to the healthy liver tissue. Major liver resections are rarely necessary.

Introduction/Objective Pancreatic cancer may be accompanied by infections caused by various microor-ganisms. It is uncertain wheatear pancreatic infection precedes the development of cancer or vice versa. The aim of this study is to analyze routes of infections from the duodenum through the pancreatic duct to determine what types of microorganisms can get through this duct into the pancreas and nearby tissue. Methods In patients subjected to cephalic duodenopancreatectomy (Whipple procedure) due to ad-enocarcinoma of the ampulla of Vater, the duodenum or head of the pancreas, swabs from duodenal mucosa, pancreatic duct, and pancreatic tissue at the line of the resection were taken. Microscopic slides were prepared directly from the patients’ specimens as well as from colonies on culture plates, and both were Gram stained. Results Candida was present in all three types of swabs (duodenum, pancreatic duct, and tissue), while bacteria, depending on the species (Pseudomonas aeruginosa, α-hemolytic Streptococcus, coagulase-negative Staphylococcus, Enterococcus spp., Serratia spp.), were present in pancreatic duct or tissue, but not in the duodenum. Conclusion There is a connection between the presence of microorganisms and pathology of the pancreatic adenocarcinoma. Results show that Candida infection originates from the duodenum, while bacterial infections originate directly from blood or tissue injuries. © 2021, Serbia Medical Society. All rights reserved.

Introduction Hamartoma of the spleen is a rare, sometimes asymptomatic similar to hemangioma benign tumor of the spleen, which, owing to the new diagnostic imaging methods, is discovered with increasing frequency. It appears as solitary or multiple tumorous lesions. Case Outline We present a 48-year-old woman in whom, during the investigation for Helicobacter pylori gastric infection and rectal bleeding, with ultrasonography, a mass 6.5×6.5 cm in diameter was discovered by chance within the spleen. Splenectomy was performed due to suspected lymphoma of the spleen. On histology, tumor showed to be of mixed cellular structure, with areas without white pulp, at places with marked dilatation of sinusoids and capillaries to the formation of "blood lakes" between which broad hypercellular Billroth's zones were present. Extramedullary hematopoiesis was found focally. The cells that covered vascular spaces were CD34+ and CD31+ and CD8- and CD21-. Conclusion Hamartoma has to be taken into consideration always when well circumscribed hypervascular tumor within the spleen is found, particularly in children. Although the diagnosis of hamartoma may be suspected preoperatively, the exact diagnosis is established based on histological and immunohystochemistry examinations. Treatment is most often splenectomy and rarely a partial splenectomy is possible, which is recommended particularly in children.

Introduction Splenic artery aneurysms are potentially lethal lesions. We report two illustrative cases and discuss etiology, diagnosis and treatment of these aneurysms. Outline of Cases Both patients, age 31 and 80 years, were biparous women. The younger woman, otherwise healthy, was referred from a local hospital 3 weeks after she underwent a left subcostal laparotomy and exploration for symptomatic abdominal mass diagnosed by CT. Angiography established the diagnosis of a large, non-ruptured splenic artery aneurysm. Elective aneurysmectomy with splenectomy was performed using the approach through the upper median laparotomy and bursa omentalis. Postoperative course was uneventful. Histopathology demonstrated cystic medial necrosis with chronic dissection. The other patient, elderly woman, presented urgently with acute abdominal pain and syncope and was diagnosed by computed tomography with a huge, ruptured splenic artery aneurysm. She underwent immediate aneurysmectomy with splenectomy using the same, above-mentioned approach. External pancreatic fistula and pancreatic pseudocyst complicated the postoperative course, requiring open pseudocyst drainage and cystojejunostomy. After a protracted hospitalization patient eventually recovered. The pathological diagnosis was atherosclerotic aneurysm. Conclusion Splenic artery aneurysms are infrequent lesions, with varied etiology and clinical presentation. Timely diagnosis and adequate treatment prevent life-threatening rupture and lessen the risk of operative morbidity and mortality. © 2015, Serbia Medical Society.