Periungual fibroma and subungual fibroma in tuberous sclerosis complex. A, Ungual fibromas involving all nails. B, Third toe shows clove-like periungual fibroma, nail-like periungual fibroma, and subungual fibroma. C, Fourth toe shows globoid periungual fibroma and longitudinal groove without visible fibroma. D, Three fusiform periungual fibromas filling one longitudinal groove. E, Vermiform periungual fibromas. F, Longitudinal groove without visible fibroma. G, Subungual fibroma protruding from under nail plate. H, Elevation of nail plate from subungual fibroma.