Forms of BCC

Various forms are recognised:

* Nodular: flesh-colored papule with telangiectasis. If it ulcerates, it becomes a "rodent ulcer" (ulcus rodens), an ulcerating nodule with (often) a pearly border.

* Cystic: rarer and hard to distinguish from the nodular form. It has a central cavity with fluid.

* Pigmented: a variant of the nodular form that may be confused with melanoma.

* Sclerosing/cicratising: a scar-like lesion.

* Superficial: a red scaling patch

About two thirds of the carcinomas occur in sun-exposed areas and one third occur in non-sun-exposed areas, emphasizing the genetic susceptibility of the basal cell cancer patients.

Source: Wikipedia.org
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