Squamous metaplasia

src: upload.wikimedia.org

Squamous metaplasia is a benign non-cancerous change (metaplasia) of surfacing lining cells (epithelium) to a squamous morphology.

Video Squamous metaplasia

Location

Common sites for squamous metaplasia include the bladder and cervix. Smokers often exhibit squamous metaplasia in the linings of their airways. These changes don't signify a specific disease, but rather usually represent the body's response to stress or irritation. Vitamin A deficiency or overdose can also lead to squamous metaplasia.

Uterine cervix

In regard to the cervix, squamous metaplasia can sometimes be found in the endocervix, as it is composed of simple columnar epithelium, whereas the ectocervix is composed of stratified squamous non-keratinized epithelium.

Maps Squamous metaplasia

Significance

Squamous metaplasia may be seen in the context of benign lesions (e.g. atypical polypoid adenomyoma), chronic irritation or cancer (e.g. endometrioid endometrial carcinoma).

src: www.dovepress.com

See also

• Metaplasia
• Dysplasia
• Barrett esophagus - a columnar cell metaplasia of squamous epithelium
• Subareolar abscess

src: www.pathologyoutlines.com

References

Source of the article : Wikipedia