TY - JOUR T1 - Laparoscopic Resection of a Retroperitoneal Ancient Schwannoma: A Case Report and Review of the Literature JF - Anticancer Research JO - Anticancer Res SP - 2889 LP - 2891 VL - 28 IS - 5B AU - TATEKI YOSHINO AU - KENJI YONEDA Y1 - 2008/09/01 UR - http://ar.iiarjournals.org/content/28/5B/2889.abstract N2 - Schwannomas are benign tumors that arise from neural sheath Schwann cells. Solitary benign schwannomas are generally located in the head and neck, often along the cranial nerves, and are a particularly rare neoplasm among tumors of the retroperitoneal space. A 67-year-old man undergoing a general health check was incidentally found to have a mass beside the left kidney. Computed tomography (CT) revealed a cystic adrenal mass located cephalad to the left kidney. Retroperitoneoscopic resection of the retroperitoneal mass was performed. The pathological diagnosis was retroperitoneal benign schwannoma consisting of mixture of a Antoni-A and -B type cells. We report a case of retroperitoneal schwannoma and discuss eleven previous reports treated by laparoscopic surgery in the English literature. Laparoscopic resection may be useful because a retroperitoneal schwannoma, which is commonly localized and hypovascular, can easily be dissected from the adjacent tissues. Copyright© 2008 International Institute of Anticancer Research (Dr. John G. Delinassios), All rights reserved ER -