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Course # 90772 • Skin Cancers

1.
Kaposi sarcoma in the mouth of a patient with AIDS.
2.
Kaposi sarcoma on the skin of a patient with AIDS.
3.
Nodular basal cell carcinoma, presenting as a small, reddish/brownish papule, often with telangiectatic blood vessels. This type of skin cancer may appear translucent (described as "pearly") and may have a central depression with rolled borders.
4.
Squamous cell carcinoma tends to arise from premalignant lesions, actinic keratoses; the surface is usually scaly and is often ulcerated (as shown here).
5.
Superficial spreading melanoma arising from a dysplastic nevus. The 4-by-8-mm, pink-tan lesion with irregular borders at the upper left (arrow) is a dysplastic nevus. Arising from it is an invasive malignant melanoma, with its characteristic blue-black color, notched border, and distorted surface. The gray area at the lower left represents tumor regression.
6.

Asymmetry

A melanoma that is irregular in shape.
7.

Border

A melanoma with a border that is uneven, ragged, or notched.
8.

Color

A melanoma with coloring of different shades of brown, black, or tan.
9.

Diameter

A melanoma with a diameter that is greater than 6 mm.
10.
The periphery of this dysplatic nevus is macular, irregular, indistinct, and slightly pink.

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