Benign multicystic peritoneal mesothelioma (BMPM) is a rare condition, in which patients have multiple cystic lesions of the peritoneum. BMPM can mimic mucinous carcinomatosis and can thus create a diagnostic dilemma. We present the case of a 76-year-old woman who was referred for management of ascending colon adenocarcinoma and was noted to have several nonspecific cystic lesions in the abdomen and pelvis on preoperative computed tomography and diagnostic laparoscopy. Frozen section analysis suggested the lesions contained 'mucin'. Due to concern for metastases, right colectomy was aborted. Final histologic analysis of the laparoscopic biopsies revealed mesothelial cysts, consistent with BMPM, unrelated to her colon adenocarcinoma. Laparoscopic right colectomy was performed 2 weeks later. BMPM can create diagnostic and therapeutic uncertainty in patients with known visceral malignancies when discovered incidentally. Frozen section analysis may not be accurate in differentiating the two, and final histologic confirmation should be sought prior to definitive treatment.
Keyphrases
- computed tomography
- robot assisted
- squamous cell carcinoma
- locally advanced
- end stage renal disease
- low grade
- ejection fraction
- newly diagnosed
- magnetic resonance imaging
- peritoneal dialysis
- patients undergoing
- insulin resistance
- type diabetes
- positron emission tomography
- adipose tissue
- single cell
- radiation therapy
- high grade
- pulmonary hypertension
- cord blood
- minimally invasive
- endothelial cells
- preterm birth
- image quality
- data analysis
- ultrasound guided
- aortic dissection