Johns Hopkins Pathology

 
Key Points:
  • Uncommon
  • Mostly in females
  • "Ovarian-type" stroma

Mucinous cystic neoplasms are neoplasms composed of mucin-producing epithelial cells associated with an ovarian-type of stroma. The neoplastic epithelial cells form one or more cysts that are filled with mucoid fluid and these cysts usually do not communicate with the larger pancreatic ducts. Invasive mucinous cystadenocarcinomas are mucinous cystic neoplasms associated with an invasive carcinoma, while non-invasive mucinous neoplasms can be categorized into adenomas, borderline neoplasms and carcinoma in situ based on the degree of architectural and cytological atypia of the epithelial cells.

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