[Nail lesions in Bournville tuberous sclerosis in isolation or associated with Koenen tumors].

On the basis of three cases, the authors describe the main changes seen in the nails in Bourneville tuberose sclerosis, not only in fingers with a Koenen tumour but also in association with simple cuticular hyperkeratoses and in fingers with no apparent lesion of the matriceal region. They feel that the description of these ungual lesions should take its place alongside the major cutaneous signs of this disorder.