A Rare Presentation of a Clear Cell Variant of Peritoneal Mesothelioma

Primary malignant peritoneal mesothelioma with clear cell subtype is a rare malignancy with few previously reported cases. We present a 63-year-old female who presented with abdominal distention and was diagnosed with clear cell mesothelioma of the peritoneum with an isolated metastasis to the liver. The patient underwent surgical resection of a greater than 50 cm mass with en-bloc partial liver and gastric resection with an uneventful post-operative course. There are established prognostic and treatment recommendations for peritoneal mesothelioma based on histological subtype and patient-specific factors, although they do not explicitly incorporate clear cell subtype. This case report describes the presentation, treatment and early outcome of a rare form of peritoneal mesothelioma.