comedo


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

comedo

[′kä·mə‚dō]
(medicine)
A collection of sebaceous material and keratin retained in the hair follicle and excretory duct of the sebaceous gland, whose surface is covered with a black dot caused by oxidation of sebum at the follicular orifice. Also known as blackhead.
References in periodicals archive ?
Since its release, the Krasr website and the Amazon page for Comedo Suction Microdemabrasion Machine have been flooded with positive reviews.
In our case mixed pattern of tubular and lobular carcinoma was seen with large foci of comedo, cribriform DCIS.
3) This is probably secondary to DCIS, comedo type, which usually presents in older patients.
Furthermore, only 28% of high-grade comedo DCIS are oestrogen receptor-positive, and 80% over-express the Her2-neu oncogene.
The median comedo lesion count dropped by 70% at 12 weeks in the combined treatment group, significantly better than the 60% decline in the retinoid monotherapy arm.
The cribriform lesions did as badly as the solid or comedo lesions," she added.
The main tumor mass was reported as metaplastic carcinoma, with foci of solid and comedo ductal carcinoma in situ extending beyond the margins of the main tumor mass.
A BLACKHEADS - or comedo, to give them their proper name - are caused by a build-up of secretions in the pores that turn black because of dirt on the skin.
Tumor necrosis is classified as either comedo necrosis or punctate necrosis.
The basic acne lesion, called the comedo (kom'-e-do) or comedone, is simply an enlarged hair follicle plugged with oil and bacteria.
Whatever the stage of acne, do not--repeat, do not--squeeze, press, or otherwise attempt to extract the contents of a comedo (the medical term for blackheads and whiteheads), either with the fingers or an instrument designed for that purpose.
Microscopic examination showed ductal lesions showing invasion in surrounding tissue and comedo necrosis along with hyalinization.