The first report of two cases of cystic echinococcosis in the lung by infection, in Vietnam.

In 2013, two cases of infection by that caused cystic echinococcosis in the lungs were reported. In the first case, there was a cyst of 6 × 7 cm in diameter, and in the second case, there were four cysts of 5 × 6 cm, 4 × 4 cm, 3.5 × 3 cm and 2.5 × 2 cm in diameter, respectively. In both cases, larvae were collected from the cysts. The larvae were identified as by morphology and a molecular method (using reduced nicotinamide adenine dinucleotide hydrogenase [NADH] with 99%-100% homology compared with in GenBank). This is the first time that this species has been found in humans in Vietnam.