Author(s)

Seul-Bi Lee¹, Jung-Hee Yoon^1*, Seung-Ho Kim¹, Yedaun Lee¹, Jin-Soo Lee¹, Jung-Wook Seo²

¹Department of Radiology, Inje University Haeundae Paik Hospital, College of Medicine, Busan, South Korea.
²Department of Radiology, Inje University Ilsan Paik Hospital, College of Medicine, Goyang-si, South Korea.

We report here a case of an inflammatory myofibroblastic tumor in the retroperitoneum, which mimicked a germ cell tumor of the undescended testis. A 75-year-old healthy man presented with a palpable abdominal mass. On the computed tomography image, there was large, well-defined soft tissue mass in the left side of the retroperitoneum, and there was no visible left testis or seminal vesicle. After contrast enhancement, the mass appeared to be relatively homogeneous, considering its large size. With ultrasonography, it appeared as a well-defined, hypoechoic mass with intratumoral vascularity. This solid mass was surgically diagnosed as an inflammatory myofibroblastic tumor.

Inflammatory Myofibroblastic Tumor, Computed Tomography, Ultrasonography, Retroperitoneal

Lee, S. , Yoon, J. , Kim, S. , Lee, Y. , Lee, J. and Seo, J. (2016) A Retroperitoneal Inflammatory Myofibroblastic Tumor Mimicking a Germ Cell Tumor of the Undescended Testis: A Case Report and Literature Review. Advances in Computed Tomography, 5, 35-41. doi: 10.4236/act.2016.53004.