Leiomyomatous hamartoma of the incisive papilla
Luciana Corrêa / Mônica Lotufo / Marília Trierveiler Martins / Norberto Sugaya /
Suzana Cantanhede Orsini Machado de Sousa

A case of unusual hamartoma in a six-year-old otherwise healthy Brazilian girl is reported, with
emphasis on histological and immunohistochemical features.A mass observed in the incisive papilla was detected whose appearance was similar to congenital epulis or fibroma. Histological findings showed interlacing fascicles of large spindle cells resembling smooth muscle cells. Immunohistochemical staining for desmin and for smooth-muscle actin was positive. The histological diagnosis was leiomyomatous hamartoma, based on clinical and microscopic observations.