<unk>  cell carcinoma SCC of the<unk>  begins as a small nodule and as it enlarges the center becomes necrotic and sloughs and the nodule turns into an ulcer. * The lesion caused by SCC is often asymptomatic * Ulcer or reddish<unk>  plaque that is slow growing * Intermittent bleeding from the tumor, especially on the lip * The clinical appearance is highly variable * Usually the tumor presents as an ulcerated lesion with hard, raised edges * The tumor may be in the form of a hard plaque or a papule, often with an opalescent quality, with tiny blood vessels * The tumor can lie below the level of the surrounding<unk> , and eventually ulcerates and invades the underlying tissue * The tumor commonly presents on sun-exposed areas (e.g. back of the hand, scalp, lip, and superior surface of pinna) * On the lip, the tumor forms a small ulcer, which fails to heal and bleeds intermittently * Evidence of chronic<unk>  photodamage, such as multiple actinic keratoses (solar keratoses) * The tumor grows relatively slowly Spread * Unlike basal-cell carcinoma (BCC),<unk>  cell carcinoma (SCC) has a higher risk of metastasis. * Risk of metastasis is higher clinically in SCC arising in scars, on the lower lips or mucosa, and occurring in immunosuppressed and solid organ transplant patients. Risk of metastasis is also higher in SCC that are >2 cm in diameter, growth into the fat layer and along nerves, thickness >6mm.
Squamous cell skin cancer
Basal-cell carcinoma
Melanoma
Mucosal melanoma
Wart
Animal-type melanoma
Actinic keratosis
Skin cancer