Peritoneal carcinomatosis

• Peritoneal involvement of solid-organ malignancy
  • See also peritoneal lymphomatosis
• Differential diagnosis includes
  • Pseudomyxoma peritonei, caused by a muconous producing neoplasm often originating in the appendix
  • Malignant peritoneal mesothelioma
  • Peritoneal lymphomatosis, associated with lymphomas including AIDS-defining illnesses and Burkitt lymphoma
  • Peritoneal tuberculosis, which can be "wet" (abundant ascites), "fixed fibrotic" (peritoneal masses and strictures), or "dry"/"plastic" (fibrous reaction in the peritoneum)
  • Splenosis implants
  • Diffuse peritoneal leiomyomatosis
  • Sarcoidosis

Further Reading

• CT imaging of peritoneal carcinomatosis and its mimics. Diagnostic and Interventional Imaging. 2014;95(9):861-872. doi: 10.1016/j.diii.2014.02.009.