J Korean Soc Radiol.  2011 Aug;65(2):167-170. 10.3348/jksr.2011.65.2.167.

Synovial Sarcoma in the Rectovesical Space: A Case Report

• Kil MC
• Cho BS
• Han GS
• Park KS
• Kim SJ
• Cha SH
• Lee SY
• Kang MH
• Lee OJ

• KMID: 1443481
• DOI: http://doi.org/10.3348/jksr.2011.65.2.167

Abstract

Synovial sarcoma is an uncommon soft tissue malignancy usually arising in the extremities of young adults. Synovial sarcomas at unusual anatomic locations have been reported; however, to the best of our knowledge, there are no reports on primary synovial sarcoma in the rectovesical space. Here, we describe the radiologic findings of primary synovial sarcoma in the rectovesical space and review relevant literature.

MeSH Terms

Extremities
Humans
Magnetic Resonance Imaging
Sarcoma, Synovial
Young Adult

Figure

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  Fig. 1 The synovial sarcoma in the rectovesical space of a 48-year-old man. A. Precontrast-phase CT scan shows a well-defined homogenous soft tissue mass without any calcification in the entire pelvic cavity. B. Arterial phase CT scan shows an intratumoral tubular structure (arrows) indicating an enhanced vascular structure. Multiple enhancing septa (arrowheads) and poorly enhanced lesions are also seen in the mass. C. 10 minute late CT scan after IV contrast administration shows strong enhancement in the mass. D. T2-weighted axial MR image shows signal heterogeneity and multiple septa in the mass. An intratumoral serpentine tubular structure with a signal void (arrows) is seen. E. T2-weighted sagittal MR image shows the mass surrounded anteriorly by the urinary bladder (white arrows) and posteriorly by the rectosigmoid colon (black arrows). F. Precontrast T1-weighted axial MR image shows that the mass has a slightly higher signal intensity than that of the skeletal muscle. G. Postcontrast T1-weighted axial MR image shows that the mass contains a strongly enhancing solid portion and poorly enhancing portion. H. The tumor has uniform and relatively small ovoid or short-spindle cells with occasional mitosis (Hematoxylin-eosin staining, × 400).

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