Enteric duplication cysts lacking anatomic association with the gastrointestinal tract are called isolated enteric duplication cysts (IEDCs). We present an atypical case of a retroperitoneal IEDC with a tortuous tubular complex shape that enfolded the surrounding retroperitoneal fat and mimicked a retroperitoneal teratoma. Multiplanar reconstruction images should be used to evaluate such a lesi...

Introduction. Retroperitoneal sarcomas comprise a small proportion of all soft tissue sarcomas, and multiple factors influence their clinical behavior. Histopathological type and grade as well as complete surgical resection especially on the first operative attempt are well recognized as the main prognostic factors. Multifocality is another prognostic factor, which compromises therapy and final...

Primary retroperitoneal teratoma is a rare entity in adults. It has a distinctive imaging appearance. We describe the case of a 26-year-old man who was referred to our hospital due to an abdominal tumor. Serial work-up disclosed a teratoma at the retroperitoneum. Laparotomy with tumor resection was performed. Pathological examination revealed a mature cystic teratoma. The postoperative course w...

Department of Nephrology and Hypertension, Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, OH, USA, Department of Anatomic Pathology, Pathology Laboratory and Medicine Institute, Cleveland Clinic, Cleveland, OH, USA, Department of Internal Medicine, Medicine Institute, Cleveland Clinic, Cleveland, OH, USA and Department of Pulmonary and Critical Care Medicine, Respiratory...

Primary retroperitoneal teratoma is a rare entity in adults with a distinctive imaging appearance. We describe an unusual case of a 19-year old male patient referred to our hospital due to a large mass in his abdomen. Radiological work-up revealed a large retroperitoneal mass with no other masses or abnormalities. Exploratory laparotomy with tumor resection was performed. Histopathological diag...

BACKGROUND Renal angiomyolipomas (RAMLs) can spontaneously rupture and induce hemorrhage that is usually confined to the perirenal space (PS) but may spread beyond the PS into other retroperitoneal fascia and fascial spaces, including up to the subdiaphramatic and down to pelvic extra-peritoneal regions. PURPOSE To evaluate the computed tomography (CT) manifestations of renal angiomyolipoma (...

Retroperitoneal fibrosis is characterised by diffuse inflammatory proliferation of fibroblasts and the deposition of collagen fibrils throughout the retroperitoneum, especially in perivascular sites. This results in blockage of the ureters and other tubular retroperitoneal structures such as the vasculature and lymphatic channels. Left untreated, it typically follows a progressive and fatal cou...

Foreign bodies are rare and challenging issues leading to symptoms according to the location. Laparoscopy is a popular and minimally invasive method used for removal of foreign bodies in the abdominal cavity or retroperitoneum. We herein report a case with retroperitoneal foreign body that was removed through retroperitoneal single- port laparoscopy using nephroscope. To our knowledge this is t...

PURPOSE To present the oncologic and functional outcomes of robot-assisted partial nephrectomy (RAPN) and analyze retroperitoneal and transperitoneal approaches. PATIENTS AND METHODS RAPN was performed on 103 patients; 44 patients underwent a retroperitoneal and 59 a transperitoneal approach. Demographic, operative, and postoperative data was collected and retrospectively analyzed on all pati...