%0 Journal Article %T Carcinoma epidermoide sobre sinus pilonidal %A Alecha Gil %A J. %A Echenique-Elizondo %A M. %A Amondarain %A J. A. %A G¨®rriz Arias %A G. %J Oncolog¨ªa (Barcelona) %D 2006 %I Scientific Electronic Library Online %R 10.4321/S0378-48352006000500007 %X introduction: malignant degeneration of pilonidal sinus is a rare complication observed mainly in recurrent chronic cases of the disease, associated to a very bad prognosis. material and methods: we have reviewed 367 patients with simple and complicated pilonidal cysts. we found 3 cases (0.81%) of epidermoid carcinoma. conclusions: pilonidal sinus epidermoid carcinoma is an infrequent disease predicting for very poor outcome. %K pilonidal sinus %K epidermoid carcinoma. %U http://scielo.isciii.es/scielo.php?script=sci_abstract&pid=S0378-48352006000500007&lng=en&nrm=iso&tlng=en