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The colorectal adenoma is a benign glandular tumor of the colon and the rectum. It is a precursor lesion of the colorectal adenocarcinoma ( colon cancer ). [ 1 ] [ 2 ] [ 3 ] They often manifest as colorectal polyps .
Polyps are either pedunculated (attached to the intestinal wall by a stalk) or sessile (grow directly from the wall). [5] [6]: 1342 In addition to the gross appearance categorization, they are further divided by their histologic appearance as tubular adenoma which are tubular glands, villous adenoma which are long finger like projections on the surface, and tubulovillous adenoma which has ...
The diagnosis is based on tissue examination, e.g. biopsy. The name of the lesion describes it microscopic appearance. It has nipple-like structures with fibrovascular cores that are long in relation to their width (villus-like), which are covered with a glandular pseudostratified columnar epithelium.
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.
Sessile serrated adenomas were first described in 1996. [10] In 2019, the World Health Organization recommended the use of the term "sessile serrated lesion," rather than sessile serrated polyp or adenoma. [6]
Cervical cancer. Annually, 11,500 people are diagnosed with cervical cancer and about 4,000 people die from this cancer nationally according to the U.S. Centers for Disease Control and Prevention ...
Adenocarcinoma is the malignant counterpart to adenoma, which is the benign form of such tumors. Sometimes adenomas transform into adenocarcinomas, but most do not. Well-differentiated adenocarcinomas tend to resemble the glandular tissue that they are derived from, while poorly differentiated adenocarcinomas may not.
In the female, it has been found in the body of the uterus and the fallopian tube. [7] Most adenomatoid tumors do not cause much pain and can go unnoticed for a long time. Of course, there are a few exceptions to this absence of pain. An example of this is when adenomatoid tumors grow too close to testicular adnexal structures. [8]