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  • Title: Immunologic detection of markers of keratinocyte differentiation. Its use in neoplastic and preneoplastic lesions of skin.
    Author: Kvedar JC, Fewkes J, Baden HP.
    Journal: Arch Pathol Lab Med; 1986 Mar; 110(3):183-8. PubMed ID: 2418804.
    Abstract:
    We examined seven invasive squamous cell carcinomas, five squamous cell carcinomas in situ, four keratoacanthomas, two actinic keratoses, and two seborrheic keratoses by indirect immunofluorescence. We used a panel of three antibodies: one directed against filaggrin, one against involucrin, and one against peptidylarginine deiminase. Anti-involucrin stained all the lesions studied, but the pattern within a given category of lesions was variable and consistent differences between the categories were not observed. Similarly, the antibodies against peptidylarginine deiminase and filaggrin were not able to distinguish differences between the various types of tumors. We conclude that in tumors of epidermis, benign or malignant, products of differentiation are expressed independently of histologic atypia or clinical aggressiveness. Therefore, markers of differentiation do not appear to be reliable indexes for distinguishing benign from malignant lesions.
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