intraepithelial neoplasia


intraepithelial neoplasia

An in situ carcinoma confined to an epithelium that may superficially penetrate adnexal glands, measuring < either 3 mm or 5 mm depending on the criteria used; IN is adjectivally modified according to site of origin. See CIN. Intraepithelial neoplasia
AIN Anal intraepithelial neoplasia CIN Cervical intraepithelial neoplasia, see there. DIN Ductal intraepithelial neoplasia, see there. OIN Oral intraepithelial neoplasia PAIN Perianal intraepithelial neoplasia PIN Prostatic (or rarely Penile) intraepithelial neoplasia VAIN Vaginal intraepithelial neoplasia VIN Vulvar intraepithelial neoplasia

intraepithelial neoplasia

Abnormal cell growth that is found within epithelial cells but has not yet spread to neighboring, underlying, or distant tissues. Intraepithelial neoplasia is thought to be an early marker of some cancers, e.g., cancers of the breast, prostate, or uterine cervix. See: cervical intraepithelial neoplasiaSee also: neoplasia