Case for diagnosis. Pachydermodactyly.
Pachydermodactyly is a rare and benign form of acquired digital fibromatosis characterized by the expansion of soft tissue around proximal phalanges and interphalangeal joints. The etiology remains unknown, although it is suggested that repetitive mechanic trauma like the interlacing or rubbing of the fingers can lead to skin thickening. We report a case of a young man with skin thickening around interphalangeal joints and compulsive finger manipulation habit. The histopathology disclosed hyperkeratosis, discrete papillomatosis, mild increase of fibroblasts and dermal mucinosis. The lesions regressed partially, after finger manipulation was stopped.
Paulista State University Júlio de Mesquita Filho, UNESP, Botucatu, SP, Brazil.
Camila Bueno
CB
Requena
Paulista State University Júlio de Mesquita Filho, UNESP, Botucatu, SP, Brazil.
Hélio Amante
HA
Miot
Paulista State University Júlio de Mesquita Filho, UNESP, Botucatu, SP, Brazil.
Mariângela Esther Alencar
ME
Marques
Paulista State University Júlio de Mesquita Filho, UNESP, Botucatu, SP, Brazil.
Luciane Donida Bartoli
LD
Miot
D005347:Fibroblasts / Q000473:pathology; D005350:Fibroma / Q000473:pathology*; D005385:Fingers; D006801:Humans; D008297:Male; D012878:Skin Neoplasms / Q000473:pathology*; D055815:Young Adult