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Radiological findings of primary retroperitoneal synovial sarcoma

¹ Department of Radiology, ² Department of Pathology and ³ Department of Surgery, Baskent University Adana Teaching and Medical Research Center, Dadaloglu Mah Serinevler Adana-Turkey

View larger version (117K): [in a new window]   Figure 1. Abdominal Doppler ultrasound image shows a hypoechoic and hypovascular mass (thick open arrow) anterior to the inferior vena cava, encircled by the vessels. The common iliac arteries are seen medial to the mass (thin arrow).

View larger version (56K): [in a new window]   Figure 2. (a) Non-contrast enhanced abdominal CT image shows a large spherical, well defined soft tissue mass (small open arrow) and punctuate calcification (arrow) and the psoas muscle behind the mass (big open arrow). (b) Post-contrast CT image demonstrates marked and homogeneous enhancement of the mass (open arrow), right common iliac artery just medial to the mass (thin arrow) and psoas muscle position to the mass (arrowhead).

View larger version (127K): [in a new window]   Figure 3. (a) Pre-contrast T1 weighted sagittal MR image shows the retroperitoneal mass which is slightly hyperintense to adjacent muscle (arrows). (b) Axial T2 weighted MR image demonstrates slight hyperintensity of the mass (large open arrow) compared with muscle (small open arrow). (c) Post gadolinium T1 weighted image shows homogeneous enhancement of the lesion (large open arrows) compared with psoas muscle adjacent to the mass (small open arrow).

View larger version (155K): [in a new window]   Figure 4. Pathological section of the tumour showing tumour cells consisting of oval, rounded cells with hyperchromatic nuclei and eosinophilic cytoplasms (haematoxylin and eosin (HE) x 100), with high power inset (HE x 400).