Congenital non-familial unilateral basaloid follicular hamartoma

Basaloid follicular hamartoma is not a well-recognized clinical entity and has often been diagnosed as trichoepithelioma or basal cell carcinoma. It i s a unique benign follicular tumour which comprises a variety of clinical m anifestations. We present the case of a 24-year-old male with unilateral ba saloid follicular hamartoma present at birth and later misdiagnosed as basa l cell carcinoma. Histological features of basaloid follicular hamartoma ar e nor always diagnostic and clinico-pathological correlation is particularl y important to distinguish this benign hamartoma from other basaloid tumour s including basal cell carcinoma. Continuous follow-up of our patient did n ot reveal any clinical or histological malignant transformation. (C) 1999 E lsevier Science B.V. All rights reserved.