| basal cell c. |
the most common form of skin cancer, consisting of an epithelial tumor of the skin originating from neoplastic differentiation of basal cells, rarely metastatic but locally invasive and aggressive; it usually occurs as one or several small, pearly nodules or plaques with central depressions on the face of an older adult, particularly on a sun-exposed area of persons with fair skin. It has been divided into numerous and variable subtypes on the basis of clinical and histological characteristics; the more constant subtypes include nodulo-ulcerative, morphea-like, cystic, and superficial. Click here to view image■Several forms of basal cell carcinoma. (A), Nodulo-ulcerative; (B), pigmented; (C), superficial.
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| basal cell c., alveolar |
cystic basal cell c.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| basal cell c., comedo |
a form in which the cores of the basal cell masses are necrotic.
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| basal cell c., cystic |
an uncommon subtype occurring as a cystic lesion formed by central degeneration, characterized histologically by edematous stroma rimmed by neoplastic cells.
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| basal cell c., morphea-like |
a form usually occurring on the face or neck as scar-like, telangiectatic, ivory lesions with poorly defined borders, characterized histologically by strands of basal cells surrounded by dense hyalinized stroma, and usually spreading laterally.
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