Neuroendocrine tumor of anal canal

What it is

A are epithelial tumor of the anal canal arising from enterochromaffin cells in the colorectal-type epithelium above the dentate line and in the anal transition zone. The tumors are slow growing and the majority of cases are diagnosed in later advanced stages. It may present with symptoms related to the anatomical location of the tumor (rectal mass, rectal bleeding and pain, tenesmus or changes in bowel habits), symptoms of carcinoid syndrome (flushing and increased gut motility) or nonspecific symptoms of advanced disease (hepatomegaly, fever, weight loss, anorexia, malaise).

Key facts

Age of onset

Adult, Elderly

Classified as

Disease

Signs and symptoms

These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.

ICD-10 codes

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Related health topics

Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.

Cross-references