Koenen's tumor are seen in ?
Koenen tumors, or periungual and subungual fibromas, are a benign, cutaneous manifestation of tuberous sclerosis. They are disfiguring, painful, and challenging to treat as they frequently recur . Koenen's tumor is a cutaneous condition that results in fifty percent of tuberous sclerosis cases. Ref - Davidson 23rd edition pg 838
Neurofibromatosis
Tuberous sclerosis
Struge weber syndrome
Tuberculosis
Miscellaneous