AIN
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AIN
Abbreviation for:acute infectious nephritis
acute interstitial nephritis
American Institute of Nutrition
anal intraepithelial neoplasia (see there)
anterior interosseous nerve
anterior interpositus nucleus
assistant in nursing
autoimmune neutropenia
AIN
Anal intraepithelial neoplasia. See Intraepithelial neoplasia.neoplasia
(ne?o-pla'zh(e-)a) [ neo- + -plasia]The development of neoplasms (new tissues or tumors).
anal intraepithelial neoplasia
Abbreviation: AINA precancerous change in the squamous cells of the anus that may eventually develop into anorectal cancer. It is similar to cervical intraepithelial neoplasia in that it is a premalignant lesion that arises in squamous cells, is found primarily in sexually active people, and is associated with human papillomavirus and HIV.
Synonym: anal dysplasia; anal squamous intraepithelial lesioncervical intraepithelial neoplasia
Abbreviation: CINDysplasia of the basal layers of the squamous epithelium of the uterine cervix. This may progress to involve deeper layers of the epithelium. Grades 1, 2, and 3 represent increasing progression of the pathological process. Grade 3 (CIN 3) represents carcinoma in situ. CIN 3 is also classed stage 0 of cancer of the cervix.
See: Bethesda System, The; cervical cancerintraepithelial 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 neoplasia
multiple endocrine neoplasia
Abbreviation: MENAny of several inherited syndromes caused by a defect in tumor suppressor genes that produces benign and malignant tumors of many endocrine glands. Angiofibromas and collagenomas of the skin also are common findings. This group of diseases has been classed according to the glands affected. Synonym: multiple endocrine neoplasm
multiple endocrine neoplasia, type I
Abbreviation: MEN IMultiple endocrine neoplasia in which there are tumors of the parathyroid, pituitary, and islet cells of the pancreas.
Synonym: Wermer syndromemultiple endocrine neoplasia, type II
Multiple endocrine neoplasia characterized by medullary thyroid carcinoma, pheochromocytoma, and parathyroid hyperplasia.
Synonym: Sipple syndromemultiple endocrine neoplasia, type III
Multiple endocrine neoplasia that is similar to MEN II but in which there are marked facial aberrations with neuromas of the conjunctiva, labial mucosa, tongue, larynx, and gastric intestinal tract.
vaginal intraepithelial neoplasia
Abbreviation: VAINVulvar intraepiethelial neoplasia.
vulvar intraepithelial neoplasia
Abbreviation: VINPrecancerous, noninvasive lesions of the squamous epithelium of the vulva.
Synonym: vaginal intraepithelial neoplasiaSymptoms
Symptoms are vulvar pain, itching, or burning. Risk factors include exposure to Human Papilloma Virus 16 and 18, type 2 Herpes Simplex Virus, and smoking.
Diagnosis
Diagnosis is made by biopsy of the lesion.
Treatment
Treatments include brief observation to see if the condition spontaneously remits, topically applied chemotherapy, laser ablation, or wide surgical excision.
anal intraepithelial neoplasia
Abbreviation: AINA precancerous change in the squamous cells of the anus that may eventually develop into anorectal cancer. It is similar to cervical intraepithelial neoplasia in that it is a premalignant lesion that arises in squamous cells, is found primarily in sexually active people, and is associated with human papillomavirus and HIV.
Synonym: anal dysplasia; anal squamous intraepithelial lesionSee also: neoplasia