Retroperitoneal Extraskeletal Osteosarcoma without Calcification Mimicking Pancreas Tumor: CT Imaging of a Case Report
10.3348/jksr.2018.78.5.340
- Author:
Jung Won KIM
1
;
Kyung Eun BAE
;
Kyeong Mee PARK
;
Jae Hyung KIM
;
Myeong Ja JEONG
;
Soung Hee KIM
;
Ji Young KIM
;
Soo Hyun KIM
;
Mi Jin KANG
;
Ji Hae LEE
;
Tae Gyu KIM
Author Information
1. Department of Radiology, Inje University College of Medicine, Sanggye Paik Hospital, Seoul, Korea. s2671@paik.ac.kr
- Publication Type:Case Report
- From:Journal of the Korean Radiological Society
2018;78(5):340-344
- CountryRepublic of Korea
- Language:English
-
Abstract:
Retroperitoneal extraskeletal osteosarcoma is a rare tumor. Typical imaging findings include a soft tissue mass accompanied with internal calcifications. The authors encountered a case involving a 44-year-old woman with a large retroperitoneal extraskeletal osteosarcoma, without calcification, that mimicked a pancreatic tumor. The present report highlights computed tomography features of retroperitoneal extraskeletal osteosarcoma, followed by a brief literature review. It is challenging for radiologists to diagnose retroperitoneal masses. However, in patients who present with large retroperitoneal masses, combined with clinical information including the elevation of serum alkaline phosphatase levels, retroperitoneal extraskeletal osteosarcoma should be considered in the differential diagnosis, even if the mass does not exhibit a gross calcification on the imaging.
