Figure 6b. Pseudomyxoma peritonei in a 47-year-old man with abdominal discomfort. Axial (a) and coronal (b) CT scans show multiple low-attenuation nodules and masses in the omentum and peritoneal cavity. Curvilinear or punctate calcifications of the seeding nodules; scalloping of the liver, spleen, and stomach; and small bowel adhesions from mesenteric infiltration are noted. Pseudomyxoma peritonei was proved with peritoneoscopic biopsy.