Cystadenoma is a type of
cystic adenoma
An adenoma is a benign tumor of epithelium, epithelial tissue with glandular origin, glandular characteristics, or both. Adenomas can grow from many glandular organ (anatomy), organs, including the adrenal glands, pituitary gland, thyroid, prosta ...
. When
malignant
Malignancy () is the tendency of a medical condition to become progressively worse; the term is most familiar as a characterization of cancer.
A ''malignant'' tumor contrasts with a non-cancerous benign tumor, ''benign'' tumor in that a malig ...
, it is called cystadenocarcinoma.
Classification
When not otherwise specified, the
ICD-O coding is 8440/0. However, the following classifications also exist:
By form
*
serous
In physiology, serous fluid or serosal fluid (originating from the Medieval Latin word ''serosus'', from Latin ''serum'') is any of various body fluids resembling serum, that are typically pale yellow or transparent and of a benign nature. The fl ...
cystadenoma (8441-8442)
*
papillary cystadenoma (8450-8451, 8561)
*
mucinous cystadenoma (8470-8473)
By location
*
Bile duct
A bile duct is any of a number of long tube-like structures that carry bile, and is present in most vertebrates. The bile duct is separated into three main parts: the fundus (superior), the body (middle), and the neck (inferior).
Bile is requ ...
cystadenoma (8161) or biliary cystadenoma 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 cystadenoma can progressively become malignant over time.
* Endometrioid cystadenoma (8380)
*
Appendix: The term ''mucinous cystadenoma'' is an obsolete term for
appendiceal mucinous neoplasm[ Topic Completed: 1 October 2017. Revised: 11 December 2019]
The term "cystadenoma" may also refer to a
hidrocystoma.
See also
*
Warthin's tumor
References
External links
*
*
{{Tumor histology
Glandular and epithelial neoplasia