Peritoneal Carcinomatosis: Pictorial Review of Computed Tomography Findings.

Peritoneal carcinomatosis (PC) is intraperitoneal dissemination of any tumour that does not originate from the peritoneum itself. PC is most commonly seen in abdominopelvic malignancies. Computed Tomography (CT) is particularly important for detailed preoperative assessment and evaluation of the radiological Peritoneal Cancer Index (PCI). The imaging findings vary from simple ascites to multifocal discrete nodules and infiltrative peritoneal masses. Various tumours and tumour like conditions can mimic PC. A systematic analysis of CT imaging features is helpful to narrow down the differential diagnosis, staging and effectively guiding the patient management.