Neurilemmomas are tumors of the neurilemmoma or nerve sheath of Schwann. They rarely occur in the retroperitoneal space. It is usually solitary and may be benign or malignant, solid or cystic, encapsulated or diffuse. We report 2 such cases and discus the clinical and pathological features.
Neurilemmoma* ; Retroperitoneal Space

Schwannoma also referred to as neurilemmoma, neurinoma, and perineural fibroblastoma, is an encapsulated nerve sheath tumor consisting of two components :a highly ordered cellular component (Antoni A area) and a loose, myxoid component (Antoni B area). It is usually solitary and may be benign or malignant, solid or cystic, encapsulated or diffuse. It is rarely occur in the retroperitoneal space. The term cellular Schwannoma is indicative of a Schwannoma composed predominantly of Antoni A type tissue. We report one case of retroperitoneal with brief review of literatures.
Neurilemmoma* ; Retroperitoneal Space

Schwannoma also referred to as neurilemmoma, neurinoma, and perineural fibroblastoma, is an encapsulated nerve sheath tumor consisting of two components :a highly ordered cellular component (Antoni A area) and a loose, myxoid component (Antoni B area). It is usually solitary and may be benign or malignant, solid or cystic, encapsulated or diffuse. It is rarely occur in the retroperitoneal space. The term cellular Schwannoma is indicative of a Schwannoma composed predominantly of Antoni A type tissue. We report one case of retroperitoneal with brief review of literatures.
Neurilemmoma* ; Retroperitoneal Space

Humans ; Paraganglioma/complications* ; Retroperitoneal Neoplasms/diagnostic imaging* ; Retroperitoneal Space ; Tachycardia

Malignant fibrous histiocytoma is an uncommon pleomorphic tumor of the soft tissues possibly arising from the histiocyte. A case of huge malignant fibrous histiocytoma weighing 10.2kg in the retroperitoneal space is reported with brief review of literatures.
Histiocytes ; Histiocytoma ; Histiocytoma, Malignant Fibrous* ; Retroperitoneal Space

Sparganosis is infection by a sparganum, the genetic term for the plerocercoid larva of a pseudophyllidean tapewarm. The majority of infections in man are caused by raw consuming of snakes and frogs in Korea. Clinically, subcutaneous mass or lump was the most frequent problem but retroperitoneal mass was very rare. We treated a case of sparganosis invading the retroperitoneal space that was diagnosed initially as soft tissue tumor.
Korea ; Larva ; Retroperitoneal Space ; Snakes ; Sparganosis* ; Sparganum

Pelvic lipomatosis is a very rare condition in which a proliferative process involving the mature fat of the pelvic retroperitoneal space. An X-ray in such cases is characteristic and shows radiolucency of the soft pelvic tissue and bladder is displaced upward and has a gourd-like or inverted tear-drop appearance. In Korea, there is no previous report. Herein we report a case of pelvic lipomatosis and the literatures are reviewed.
Korea ; Lipomatosis* ; Retroperitoneal Space ; Urinary Bladder

Primary retroperitoneal cysts are rare. Symptoms may be absent, or only an increased abdominal size observed. However, some patients present with complaints associated with pressure or displacement of an abdominal organ due to the cyst. Most patients display some chronic symptoms that necessitate therapeutic intervention. These cysts may occur at any age, with the highest incidence being the fourth decade, but one-third of patients present at less than 10 years of age. A case of a retroperitoneal cyst, which presented as a simple renal cyst, and removed with a laparoscopy, is reported in a sixty one-year-old woman.
Female ; Humans ; Incidence ; Laparoscopy ; Retroperitoneal Space

Malignant fibrous histiocytoma is uncommon pleomorphic tumor of the soft tissues possibly arising from the histiocyte. A case of malignant fibrous histiocytoma of the retroperitoneum stimulated our interest in this uncommon and pathologically intriguing lesion. So we report a case of malignant fibrous histiocytoma in the retroperitoneal space.
Histiocytes ; Histiocytoma ; Histiocytoma, Malignant Fibrous* ; Retroperitoneal Space

Laparoscopic adrenalectomy has become a gold standard in adrenal gland surgery. More recently, some minimally invasive trials have been conducted on single access surgery on the adrenal gland. In this study, we introduce our first experiences of robot-assisted posterior retroperitoneoscopic adrenalectomy using single-port access and the da Vinci system.
Adrenal Glands ; Adrenalectomy ; Retroperitoneal Space ; Robotics