Peritoneal metastases of unknown primary with hepatoid features.

IF 1.4 Q4 ONCOLOGY Pleura and Peritoneum Pub Date : 2022-08-19 eCollection Date: 2022-09-01 DOI:10.1515/pp-2022-0113

Lakhdar Khellaf, Stéphanie Nougaret, Sébastien Carrère, Frédéric Bibeau

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Abstract

A 59-year-old woman presented with isolated peritoneal metastases in the context of elevated serum AFP levels (Figure 1A and B). No primary tumour was found, notably from the liver, the gastrointestinal or gynecological tracts. A laparoscopic assessment reported a peritoneal cancer index (PCI) reaching 22/39 and biopsies performed disclosed hepatocellular carcinoma (HCC). A chemotherapy followed by Figure 1: Magnetic resonance imaging (MRI) of the liver and peritoneum (axial T2 weighted images). (A) Initial MRI: ill-defined T2 hyperintense nodule within the falciform ligament of the liver (arrow). (B) MRI at 3 months: Appearance of several peritoneal metastases (arrows). Note the absence of any parenchymal liver tumour in both images. (C) Histopathological analysis: hepatocellular carcinoma (asterisks) in the falciform ligament of the liver, representing the starting point of the peritoneal disease. Ectopic liver is circled in red (greater axis: 15 mm), with detectable steatosis (HES, ×6). Note the independent vasculo-biliary stalk, highlighted in the inset (HES, ×50). HES: hematoxylin-eosin-saffron.

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