[Human pulmonary dirofilariasis: parasitological aspects of the 2d case reported in Italy].

The parasitological aspects of a case of pulmonary human dirofilariasis, recently reported by Fabbretti and collaborators (1990) in a 58 year-old man from Ferrara province, are described. This is the second case of pulmonary human dirofilariasis recorded in Italy. The nematode was rolled up inside a small pulmonary artery and was associated with a nodular infarcted lesion, discovered during an X-ray check as a "coin lesion". A pulmonary lobectomy was performed on the patient with a presumptive diagnosis of a malignant neoplastic nodule. The exact diagnosis was only made with the histological examination. In spite of the bad preservation of the nematode, it was possible to diagnose it as an immature female of Dirofilaria probably belonging to the species repens.