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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 ...
Leishmania then invades human macrophages and replicates intracellularly. A raised, red lesion develops at the site of the bite (often weeks or sometimes years afterwards). The lesion then ulcerates and may become secondarily infected with bacteria. In many species (for example, L. major) the lesion often spontaneously heals with atrophic scarring.
Skin cancer is the most commonly diagnosed form of cancer in humans. [11] [12] [13] There are three main types of skin cancers: basal-cell skin cancer (BCC), squamous-cell skin cancer (SCC) and melanoma. [1] The first two, along with a number of less common skin cancers, are known as nonmelanoma skin cancer (NMSC).
Ringworm. What it looks like: Ringworm is a common skin infection caused by a fungus. It gets its name from its circular rash, which is often red, swollen, and cracked. Other symptoms to note ...
Diffuse cutaneous leishmaniasis produces widespread skin lesions which resemble leprosy, and may not heal on their own. [3] Mucocutaneous leishmaniasis causes both skin and mucosal ulcers with damage primarily of the nose and mouth. [2] [3] Visceral leishmaniasis or kala-azar ('black fever') is the most serious form and is generally fatal if ...
Squamous-cell carcinoma (SCC), also known as epidermoid carcinoma, comprises a number of different types of cancer that begin in squamous cells. [1] These cells form on the surface of the skin, on the lining of hollow organs in the body, and on the lining of the respiratory and digestive tracts. [1]
The lesions tend to recur on stopping treatment. [1] The condition is rare. [1] The lesions have been noted to occur at a younger age in warmer climates. [1] EV associated skin cancer develops less frequently in Africans. [1] The condition was first described by Felix Lewandowsky and Wilhelm Lutz in 1922. [7]
A study examining over 4,000 biopsied skin lesions identified clinically as seborrheic keratoses showed 3.1% were malignancies. Two-thirds of those were squamous cell carcinoma. [11] To date, the gold standard in the diagnosis of seborrheic keratosis is represented by the histolopathologic analysis of a skin biopsy. [12]
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