EN
Acanthoheilonema reconditum was found during monitoring dogs living in the vicinity of Warsaw, for Dirofilaria spp. infection. The microfilaremia in blood was at first detected by microscopy and then molecular tests for distinct filarial markers were performed. PCR product sequencing confirmed that the microfilaria detected in two dogs were A. reconditum. These are the first two cases of canine acanthocheilonemiasis detected in Poland.