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Case prepared by: Christina A. Arnold
GI Pathology Fellow
Attending: Elizabeth Montgomery, M.D.
  Case 66
Clinical History: A 34 year-old female underwent a cytoreductive surgery, including resection of her terminal ileum, right colon, right kidney, spleen, and portions of liver. Multiple loculated peritoneal mucinous lesions were resected. The patient had an appendiceal neoplasm in the past. Most sections of the mucinous lesions were acellular except for a few loci shown in Fig 2-5. What is your diagnosis for these peritoneal lesions?
Image 1 Image 1
Image 2 Image 2
Image 3 Image 3
Image 4 Image 4
Image 5 Image 5
Choose the correct diagnosis:
  a. Diffuse peritoneal adenomucinois (peritoneal involvement by low-grade mucinous neoplasm)
  b. Peritoneal mucinous carcinomatosis (mucinous adenocarcinoma)
  c. Peritoneal mucinous carcinomatosis with intermediate features (PMCA-I)
  d. Primary peritoneal serous carcinoma
  e. Ovarian serous carcinioma with peritoneal spreading

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