J Korean Radiol Soc.  1989 Oct;25(5):755-762. 10.3348/jkrs.1989.25.5.755.

The computed tomographic findings of the primary retroperitoneal tumors

• Lee WJ
• Ryoo JD
• Kang HK
• Kim JK
• Park JG
• Chung HD

• KMID: 2359057
• DOI: http://doi.org/10.3348/jkrs.1989.25.5.755

Abstract

The authors reviewed the CT findings of 31 cased of primary retroperitoneal tumors confirmed by operation (25 cases) or needle biopsy (6 cases) at the Chonnam University Hospital from June, 1983 to August, 1988. The size, shape, location, margin of mass, effect on the surrounding structures, presence or absence of metastasis and the composition of the tumor were analyzed to find the differential points between benign and malignant tumors and characteristic findings of each tumors. The results were as follows; 1. The benign tumor showed smaller size than malignant one and well circumscribed round or ovoid lesions, and no surrounding invasion or distant metastasis. 2. Some characteristic findings in teratoma, liposarcoma and malignant fibrous histiocytoma sided in differential diagnosis; 1) Teratoma showed mixture of fatty low denstiy and high density, and charac teristic fluid level. 2) Lipogenic liposarcoma showed fatty low denstiy, slightly higher than that of normal retroperitoneal fat. 3) Malignant fibrous histiocytoma showed well marginated mass with an attenuation coeffecient equal or slightly lowerthan that of normal muscle and arised mear kidney or adrenal gland and so compressed or invaded kidney.

MeSH Terms

Adrenal Glands
Biopsy, Needle
Diagnosis, Differential
Histiocytoma, Malignant Fibrous
Intra-Abdominal Fat
Jeollanam-do
Kidney
Liposarcoma
Neoplasm Metastasis
Teratoma