Primary retroperitoneal mucinous tumors are rare neoplasms and almost exclusively seen in women. In this case report we present two cases of this entity with their clinicopathologic features. The first patient was a 32 years old unmarried woman presented with abdominal pain. Ultrasound imaging demonstrated a solid and thick walled ovarian mass m. 105* 70*80 mm. At laparotomy a large retroperito...

Schwannomas usually occur in adults being between the second and fifth decades, and such neoplasms are extremely rare in a pediatric population. In addition, they are not normally found in the retroperitoneal region. Here, we present a pediatric case of a retroperitoneal schwannoma in an adrenal location where the tumor was not able to be preoperatively differentiated from other benign or malig...

A man aged 50 presented with severe abdominal and back pain on the right side from LI radiating to the sacro-iliac joints and pelvis, of 4 months duration. The pain was worse at night. There was marked weight loss and anorexia. Figure 1 Large right retroperitoneal mass, displacing kidney, adjacent to markedly dilated aorta with a cal-cified wall. Figure 2 The retroperitoneal mass is of mixed at...

A 40-year-old man presented with abdominal pain and right scrotal swelling. Physical examination revealed a right testicular tumor and CT scan showed a large retroperitoneal mass. The patient underwent right radical orchiectomy, and pathology showed mixed germ cell tumor. After 1 cycle of chemotherapy, CT scan showed interval enlargement of the retroperitoneal mass. Percutaneous biopsy was cons...

BACKGROUND Isolated retroperitoneal cystic masses are uncommon with an estimated incidence of 1/5750 to 1/250,000. The majority present with size related symptoms, complications, or a mass. Approximately a third of patients are asymptomatic and are diagnosed incidentally. Aetiologies of retroperitoneal cystic masses (RPC) include mesenteric, omental, splenic and enteric duplication cysts. Neopl...

Retroperitoneal sarcoma is a rare malignancy often insidious in onset. At initial presentation, abdominal mass, pain or obstructive symptoms are the most common complaints. Here we present two patients who presented with abdominal discomfort and were discovered to have retroperitoneal sarcomas with secondary intestinal perforation. Perforation is a rare complication of retroperitoneal sarcoma, ...

Combined idiopathic retroperitoneal-mediastinal fibrosis is rare. We report a case of mediastinal fibrosis that followed the onset of retroperitoneal fibrosis by six years. A 61-year-old asymptomatic woman was diagnosed with idiopathic mediastinal fibrosis in December of 2006 after discovering a 1.4 cm thick prevascular mass encasing the aortic arch. In August of 2001 the patient had been diagn...

Primary retroperitoneal mucinous cystic tumors with borderline malignancy are rarely encountered. To date, only 12 cases have been reported in the literature. In this report, we present an additional case. A 65-year-old nulliparous woman complained of abdominal fullness. Her medical history included a hysterectomy and a single salpingo-oophorectomy performed 25 years prior to the present event....

BACKGROUND Schwannomas are mesenchymal tumors arising from the neural sheaths of peripheral nerves. They can almost develop in any part of the body, while head, neck and extremities are the most common sites. Occurrence in the retroperitoneum is rare. Schwannomas can show secondary degenerative changes including cyst formation, hyalinization, hemorrhage, and calcification, whereas the ossified ...

A 16-year old man was referred with intermittent gross haematuria and left flank pain. On physical examination, there was a large mass in the left flank. Enhanced computed tomography demonstrated a 10 cm solid mass on the left retroperitoneal space compressing the renal pelvis and causing hydronephrosis on the left kidney. A few small lymph nodes were noted on the left para-aortic region (Figur...