On or in the liver? Two cases with diffuse pseudomyxoma peritonei and synchronous hepatic pathology

Pseudomyxoma peritonei (PMP) is a borderline malignancy, simulating carcinomatosis and generally arising from perforation of an appendiceal mucinous tumour. Some patients have coincidental dual pathology. Liver abnormalities in particular may be overlooked and/or misclassified. We report 2 cases of patients who had diffuse PMP with synchronous hepatic pathology to highlight the need for vigilance and appropriate assessment of coincidental liver lesions. An assessment and management strategy is outlined.