Figure 2b. Increasing abdominal girth and palpable masses in a 35-year-old man. (a, b) Contrast-enhanced CT scans show bulky, lobulated soft-tissue masses (arrowheads) throughout the peritoneum. Areas of low attenuation are present (straight arrow in b). Note the minimal perihepatic ascites (curved arrow in a). Desmoplastic small round cell tumor was diagnosed with US-guided biopsy.