Histological and immunohistochemical evaluation of basal cell carcinoma following curettage and electrodessication

Histological and immunohistochemical evaluation of basal cell carcinoma following curettage and electrodessication

Author Lopes Filho, Lauro Lourival Autor UNIFESP Google Scholar
Alchorne, Alice de Oliveira de Avelar Autor UNIFESP Google Scholar
Pereira, Gerson Cotta Google Scholar
Lopes, Lauro Rodolpho Soares Google Scholar
Carvalho, Teresinha Castelo Branco de Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Santa Casa Misericordia Rio de Janeiro
Abstract Background Basal cell carcinoma (BCC) is the most frequent non-melanoma skin cancer. Curettage and electrosurgery is probably the method most commonly used by dermatologists for the treatment of small and low risk BCCs. However, one is unable to determine the persistence of any residual tumor. This study was carried out in order to demonstrate the presence of such tumoral cells after curettage and electrofulguration.Methods 20 primary BCC outpatients were studied at the Dermatology Service of Getulio Vargas Hospital in the city of Teresina - State of Piaui - Brazil, with lesions of up to 1 cm in diameter on the face, and up to 1.5 cm elsewhere, and with no clinical signs of sclerosing and micronodular forms. Patients were anesthetized with 2% lidocaine with vasoconstrion and the lesions were curetted. Electrofulguration was conducted throughout the curetted area and 1 millimeter beyond. After two curettage and electrofulguration cycles, an incision around the resultant ulcer was made 2 mm beyond the visible bloody borders and in the base to the middle of subcutaneous fat. Two straight incisions were also carried out intersecting the lesion center, dividing it into quadrants. Each quadrant was incised and then fixed with 10% formalin. The quadrants and the fragments resulting from the curettage were in paraffin and histopathologically tested through hematoxylin/eosin stains and immunohistochemistry with Ber-EP4 marker.Results There was evidence of persistent BCC in 5 of the 20 sites treated (25%): four (20%) in one quadrant and one (5%) in all four quadrants. 70-100% of tumor cells expressed Ber-EP4 in all 20 BCCs.Conclusions The persistence of tumoral residues after 2 curettage and electrofulguration cycles for basal cell carcinoma was found in 5 sites treated (25%). Despite the small cohort, such findings are very similar to those of other studies that applied curettage and electrocoagulation and indicated the probability of 25% of tumoral persistence.
Language English
Date 2008-06-01
Published in International Journal Of Dermatology. Hoboken: Wiley-blackwell, v. 47, n. 6, p. 610-614, 2008.
ISSN 0011-9059 (Sherpa/Romeo, impact factor)
Publisher Wiley-Blackwell
Extent 610-614
Origin http://doi.org/10.1111/j.1365-4632.2008.03284.x
Access rights Closed access
Type Article
Web of Science ID WOS:000255833200020
URI http://repositorio.unifesp.br/11600/44038

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