A case of sarcoma most consistent with the desmoplastic small round cell tumor arising from the ileal mesentery

摘要

A 35-year-old male visited our hospital complaining of rapidly worsening abdominal distention. Enhanced computed tomography showed a heterogeneous mass measuring 17 cm in diameter in the pelvic cavity, without any sign of peritoneal dissemination or distant metastasis. Pneumatic spaces were observed in the tumor suggesting its connection with the intestinal tract (Fig. 1; axial image, arrowhead). The tumor demonstrated mild hypo-intensity on TVweighted magnetic resonance image (MRI) and hyper-intensity on T_2-weighted MRI (Fig. 2, sagittal image).