Cystadenoma (or "cystoma") is a type of
cystic
A cyst is a closed sac, having a distinct envelope and division compared with the nearby tissue. Hence, it is a cluster of cells that have grouped together to form a sac (like the manner in which water molecules group together to form a bubble); ...
adenoma
An adenoma is a benign tumor of epithelial tissue with glandular origin, glandular characteristics, or both. Adenomas can grow from many glandular organs, including the adrenal glands, pituitary gland, thyroid, prostate, and others. Some ad ...
. When
malignant
Malignancy () is the tendency of a medical condition to become progressively worse.
Malignancy is most familiar as a characterization of cancer. A ''malignant'' tumor contrasts with a non-cancerous ''benign'' tumor in that a malignancy is not s ...
, it is called cystadenocarcinoma.
Classification
When not otherwise specified, the
ICD-O
The International Classification of Diseases for Oncology (ICD-O) is a domain-specific extension of the International Statistical Classification of Diseases and Related Health Problems for tumor diseases. This classification is widely used by canc ...
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 f ...
cystadenoma (8441-8442)
*
papillary cystadenoma (8450-8451, 8561)
*
mucinous cystadenoma (8470-8473)
By location
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Bile duct
A bile duct is any of a number of long tube-like structures that carry bile, and is present in most vertebrates.
Bile is required for the digestion of food and is secreted by the liver into passages that carry bile toward the hepatic duct. It ...
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
Appendix cancer are very rare cancers of the vermiform appendix.
Gastrointestinal stromal tumors are rare tumors with malignant potential. Primary lymphomas can occur in the appendix. Breast cancer, colon cancer, and tumors of the female genita ...
[ Topic Completed: 1 October 2017. Revised: 11 December 2019]
The term "cystadenoma" may also refer to a
hidrocystoma
Hidrocystoma (also known as cystadenoma, a Moll's gland cyst, and a sudoriferous cyst) is an adenoma of the sweat gland
Sweat glands, also known as sudoriferous or sudoriparous glands, , are small tubular structures of the skin that produce sw ...
.
See also
*
Warthin's tumor
References
External links
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Glandular and epithelial neoplasia
{{neoplasm-stub