Dirofilariasis, a rare, usually imported dermatosis.

Dirofilariasis is an animal filariasis, exceptionally transmitted to man. The clinical manifestations are usually one or a few subcutaneous nodules which are frequently mistaken for lipomas or epidermic cysts. Inside the nodule may be found a worm, adult but immature. There are no systemic reactions and the only required treatment is surgical excision of the nodules.