Figure 7. Peritoneal lymphomatosis in a 71-year-old man with abdominal distention for 15 days. CT scan shows ascites in the pelvic cavity and innumerable seeding nodules in the peritoneal cavity and omentum (white arrow). Multiple enlarged lymph nodes with conglomeration (black arrows) are seen in the retroperitoneal spaces. Endoscopic gastric biopsy showed B-cell lymphoma, thus confirming the diagnosis of lymphomatosis.