Background & Objective: Renal tumors are a common finding in diagnostic imaging; these lesions usually solid or cystic, benign malignant, and the correct diagnosis may be difficult. The current study aims at to determine accuracy of magnetic resonance imaging for Wilms tumor taking histopathology as gold standard. Methodology: This cross-sectional was carried Department Radiology, Children’...

Schwannomas are benign tumors mostly arising from the head and neck. Retroperitoneal schwannomas are rare. Here we report the case of a 68-year-old woman with multiple retroperitoneal schwannomas. An abdominal computed tomography (CT) scan showed 1 non-enhancing mass with a low-density area, 4.6 cm in diameter, in the left adrenal region and another non-enhancing mass with a low-density area, 2...

BACKGROUND Malignant triton tumors are relatively rare and highly aggressive tumors in which malignant schwannoma cells coexist with rhabdomyoblasts. Their occurrence in the retroperitoneum is uncommon and has been rarely reported. CASE PRESENTATION We present the case of a patient with a retroperitoneal malignant triton tumor. A 32-year-old male was referred with epigastric pain and an abdom...

We report a case of an accessory spleen in close relation to the upper pole of the left kidney, mimicking a retroperitoneal tumor. A 58-year-old asymptomatic woman was admitted to our department for the management of a retroperitoneal mass, when the structure was incidentally discovered by ultrasound scan. The patient reported having a splenectomy at a young age, due to echinococcal disease. Th...

The aim of this study was to evaluate the role of fine needle aspiration cytology in the diagnosis of abdominal and retroperitoneal masses in children on this study. In 53 cases of childhood abdominal and retroperitoneal masses within a 4 year period (1998- 2001) preoperative fine needle aspiration was done under the guide of CT scan. 2 pathologists reviewed fine needle aspiration smears. I...

Abstract Background A case of simultaneous adrenocortical and renal cell carcinoma due to long-term lead exposure from residual gun pellets is a rare relatively unknown topic in the literature. Case presentation We present 43-year-old male patient with giant retroperitoneal tumor. Thirteen years before he had shotgun injury left upper side abdomen are abdominal wall. Extirpation tumor kidney wa...

Primary retroperitoneal mucinous cystadenocarcinoma is an extremely rare tumor. Preoperative diagnosis is very diffi cult and the treatment remains controversial. A 37-year-old Korean woman (gravida 0) presented with a huge abdominal mass. Computed tomography scan revealed an 18 × 11 cm sized unilocular cyst with irregular wall thickening and solid component at right adnexa. Serum CA 19-9 was s...

Retroperitoneal tumors, whether primary or resulting from the metastasis of other tumors, are a real challenge for the surgeon, in terms of their diagnosis and treatment. They are relatively rare, under 0.2% of the total number of tumors. The clinical examination of retroperitoneal tumors is uncharacteristic and misleading, consisting mainly in palpation of the tumor proper and in assessment of...

RATIONALE Solitary fibrous tumor (SFT) is a rare mesenchymal tumor occurs in various sites. Malignant SFT in retroperitoneum is extremely rare. PATIENT CONCERNS We report a case of malignant retroperitoneal SFT in a 59-year-old man presented with right flank pain for 1 month. DIAGNOSES, INTERVENTIONS AND OUTCOMES A laparotomy and resection of the tumor were performed, the histopathologic an...

Spontaneous retroperitoneal hemorrhage is a lethal cause of acute abdomen that is most frequently related to drugs, coagulopathy and intra-abdominal tumors. In patients with polymyositis and dermatomyositis, acute abdomen is attributed to intestinal vasculitis causing ischemia, ulceration or perforation. Spontaneous retroperitoneal hemorrhage, however, has rarely been reported in patients with ...