Abstract

A Pathologic study is made on 44 cases of retroperitoneal tumors of koreans, obtained during a period of 12 yearn, 1956-1967, at the Department of Pathology, College of Medicine, Seoul National University, and following are the results. 1. Poorly four retroperitoneal tumors examined consist of 7 (15.9%) benign and 37 (84.1%) cases of malignant tumors. 2. Thirty seven malignant and seven benign retroperitonea] tumors are histologically classified and tabulated. Among malignant tumors, Liposarcoma 9(20.4%), malignant Lymphoma (13.6%), metastatic Tumors (9.1%), and malignant teratoma (6.81%), especially prevalent, and among benign tumors, benign teratoma 3(6.8%) is more commonly encountered,. 3. Overall age distribution shows highest peaks of benign tumors in age range 31∼40 and of malignant in 51∼60. Average ages of malignant and benign retroperitoneal tumors are 40 and 28 years respectively. 4. Male is slightly preponderant than female