[Mediastinal lymphatic filariasis].

Wuchereria bancrofti gravid adult female worms were detected in a mediastinal lymph node in a 76-year old man. The patient also had lung carcinoma. A blood cell counts did not show any eosinophilia, and three consecutive night blood samples were also negative for microfilariae. Filariasis and neoplasm association was purely coincidental. Epidemiological and histopathological aspects of adult filariasis are described.