Abstract

FREER, Enrique. Leiomiomas del músculo piloerector. Rev. costarric. cienc. méd [online]. 1999, vol.20, n.3-4, pp.231-235. ISSN 0253-2948.

The pilar leiomyoma is an uncommon benign skin tumor diagnosed more frequently in young adults. lt appears as single lesion or more often multiple lesions, which have their onset early in the life on the second decade. They could be nonsymptomatic but more often they are tender or slightly painful.  Malignancy of these tumors is uncommon.  Diagnosis is often done by histology characteristics of the lesion.  We report in this paper a 28 years old patient having smooth, firm, slow growing nodules during the last 8 years, pink to yellowbrown color with tendency to coalesce in the extensor part of the arms and upper back.  Some of them were tender.  Histology analysis of the biopsy showed interweaving bundles of spindle-shaped cells localizad in the dermis which were strongly eosinophilic having long and thin nuclei and corresponding to the arrector pilorum muscles.

Keywords : Leiomyoma; multiple pilar leiomyoma.