A comedo is a clogged hair follicle (pore) in the skin. Keratin (skin debris) combines with oil to block the follicle. A comedo can be open (blackhead)...

Comedo extraction is a widely used method of treatment for acne vulgaris. A dermatologist or cosmetologist may extract blackheads (open comedones) using...

Nevus comedonicus, also known as a comedo nevus is characterized by closely arranged, grouped, often linear, slightly elevated papules that have at their...

is a blocked sweat/sebaceous duct of the skin known medically as an open comedo. Blackhead may also refer to: Blackhead (New Zealand), a cliff promontory...

are usually non-infiltrating and intraductal tumors, characterized as a comedo-type, high-grade ductal carcinoma in situ (DCIS). However, there have been...

A pimple or zit is a kind of comedo that results from excess sebum and dead skin cells getting trapped in the pores of the skin. In its aggravated state...

lesion is in some cases very difficult to distinguish from breast cancer. Comedo mastitis is a very rare form similar to granulomatous mastitis but with...

calcifications are often visible on mammographic images. Periductal mastitis, comedo mastitis, secretory disease of the breast, plasma cell mastitis and mastitis...

is a cutaneous condition characterized by a solitary, prominent, open comedo on the face or upper trunk of an individual.: 675  Louis H. Winer is credited...

carcinoma in situ with comedo necrosis spanning 30% of its diameter, which is generally regarded as the minimal size to classify it as comedo. There are different...