Boran Cetin, Parlak Ali Haydar, Erkol Hayri
Department of Pathology, Izzet Baysal Medical Faculty, Abant Izzet Baysal University, Bolu, Turkey.
Australas J Dermatol. 2007 May;48(2):127-9. doi: 10.1111/j.1440-0960.2007.00352.x.
A 52-year-old woman presented with a 2-year history of a reddish nodule on the right nasolabial sulcus. Histopathological examination revealed that the nodule was composed of trichofolliculoma and basal cell carcinoma. There was no transitional zone between the two neoplasms. The diagnosis was made as a collision tumour of trichofolliculoma and basal cell carcinoma.