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Focal acral hyperkeratosis (also known as "Acrokeratoelastoidosis lichenoides,") is a late-onset keratoderma, inherited as an autosomal dominant condition, characterized by oval or polygonal crateriform papules developing along the border of the hands, feet, and wrists. [8]: 509
Squamous-cell carcinoma of the skin, squamous-cell skin cancer, epidermoid carcinoma, squamous-cell epithelioma of the skin: Cutaneous squamous-cell carcinoma tends to arise from actinic keratoses (premalignant lesions); surface is usually scaly and often ulcerates (as shown here). Specialty: Dermatology, plastic surgery, otorhinolaryngology ...
As with squamous cell cancer, sporadic cases have been found co-infected with the human papilloma virus (HPV). [4] [12] Although HPV has been suggested as a causal factor, it is unproven. [2] Many new treatments for melanoma are also known to increase the rate of keratoacanthoma, such as the BRAF inhibitor medications vemurafenib and dabrafenib ...
Angiokeratoma of Fordyce (also known as "Angiokeratoma of the scrotum and vulva," though not to be confused with Fordyce's spots) [5] is a skin condition characterized by red to blue papules on the scrotum or vulva. Solitary angiokeratoma is a small, bluish-black, warty papule that occurs predominantly on the lower extremities. [5]: 590
A seborrheic keratosis is a non-cancerous skin tumour that originates from cells, namely keratinocytes, in the outer layer of the skin called the epidermis.Like liver spots, seborrheic keratoses are seen more often as people age.
Cowden syndrome (also known as Cowden's disease and multiple hamartoma syndrome) is an autosomal dominant inherited condition characterized by benign overgrowths called hamartomas as well as an increased lifetime risk of breast, thyroid, uterine, and other cancers. [1]
In a clinical setting, it manifests as a single, well-defined, skin-colored papule with a distinctive hyperkeratotic collarette at the base. [5] Though it can also be found in other places like the lower lip, nose, elbow, pre-patellar region, and periungual tissue, it mostly affects the fingers and toes. [ 6 ]
Papulosquamous hyperkeratotic cutaneous conditions are those that present with papules and scales caused by a thickening of the stratum corneum. Subcategories This category has only the following subcategory.