When not otherwise specified, the ICD-O coding is 8440/0. However, the following classifications also exist: By form * serous<unk>  (8441-8442) * papillary<unk>  (8450-8451, 8561) * mucinous<unk>  (8470-8473) By location * Bile duct<unk>  (8161) or biliary<unk>  is a slow-growing tumour arising from bile ducts of the liver. The presence of endocrine cells in the tumour also indicates its origin from the glands surrounding the bile ducts. The incidence is 1–5 in 100,000 people. Females are affected more than males at 9:1 ratio. Mean age of presentation is at 45 years old. About 30% of biliary<unk>  can progressively become malignant over time. * Endometrioid<unk>  (8380) * Appendix: The term mucinous<unk>  is an obsolete term for appendiceal mucinous neoplasm The term<unk> " may also refer to a hidrocystoma.
Cystadenoma
Renal cyst
Cystadenocarcinoma
Paraovarian cyst
Ovarian fibroma
Ovarian cyst
Breast cyst
Metanephric adenoma