Primary malignant fibrous histiocytoma (MFH) is a rare and biologically aggressive tumor. Differential diagnosis must include cystic neoplasms of the pancreas (mucinous and serous cystoadenoma or cystocarcinoma), cystic lymphangioma or mesothelioma and retroperitoneal haematoma. Making the right diagnosis preoperatively may be often difficult, but MFH may be suspected when a huge retroperitonea...

OBJECTIVES Primary retroperitoneal mature cystic teratomas are exceedingly uncommon in males aged 50 years and above, and only seven cases have been reported in the literature so far. They usually occur in infants less than 6 months and young females. The aim of this article is to present a rare case of a 51-year-old male with a primary retroperitoneal mature cystic teratoma located in the righ...

Primary retroperitoneal mucinous cystadenomas are uncommon tumors whose incidence in the pediatric population is very low. We present the case report of a 17-year-old female with a primary retroperitoneal mucinous cystadenoma, borderline type, and describe the successful laparoscopic resection of the mass. 2014 The Authors. Published by Elsevier Inc. Open access under CC BY-NC-SA license. Prima...

Leiomyosarcoma is a malignant smooth muscle tumor. It the second most common primary retroperitoneal tumor behind liposarcoma. The léiomyosarcoma represents 11% of all tumors. age discovery between 40 and 60 years.

Retroperitoneum is a large space where the primary and metastatic tumors grow silently before clinical signs appear. Retroperitoneal sarcomas represent 10% to 15% of all soft tissue sarcomas. This group, retroperitoneal soft tissue sarcomas is associated with a very poor long-term survival rate, difficulty in diagnosis and complete surgical removal with a rim of normal tissue around the tumors....

Primary retroperitoneal teratoma is a rare entity in adults. We present a case of 23-yearsold female who presented with complaint of abdominal pain in left upper quadrant. Computed tomography scan revealed a retroperitoneal retropancreatic teratoma near celiac axis with intra thoracic extension. Laparotomy with tumor resection was done. The case report is interesting for intra thoracic extensio...

Introduction: Retroperitoneum is the third most common extragonadal site for occurrence of teratoma in children, after sacrococcygeal region and gonadal sites. Although many authors have previously reported laparoscopic removal of benign retroperitoneal teratoma in adults, the experience in pediatric setting is extremely limited. Material and methods: We report our experience with laparoscopic ...

Retroperitoneal fibrosis is a rare condition. It is idiopathic or secondary to various diseases including autoimmune diseases and atherosclerosis [1]. Although its pathogenesis is unknown, it is now considered that immune responses may play an important role in this disease [1]. Retroperitoneal fibrosis is also seen in metastatic carcinomas from many organs as a desmoplastic reaction [1]. Howev...