• In 18 examples of keratoacanthoma, the proliferating squamous epithelium histologically invaded the perineural space. The invasion did not adversely affect the biologic behavior and the prognosis.
(Arch Dermatol 116:791-793, 1980)
Lapins NA, Helwig EB. Perineural Invasion by Keratoacanthoma. Arch Dermatol. 1980;116(7):791–793. doi:10.1001/archderm.1980.01640310061021
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