Coinfection of Pulmonary Paragonimiasis and Pulmonary Tuberculosis in Thailand.

The authors report a case of coinfection of pulmonary paragonimiasis and pulmonary tuberculosis which is an uncommon coinfection. The patient presented with a one-week history of nonmassive hemoptysis about 1 month after completion of treatment for smear-negative pulmonary tuberculosis (sputum polymerase chain reaction positive for Mycobacterium tuberculosis). She lived in Nakhon Nayok province and reported taking raw crabs from time to time. The complete blood count revealed eosinophilia and her chest radiograph showed patchy infiltration at right lower lung field. Computed tomography scan of the chest revealed consolidation with internal air bubbles at anterobasal segment of right lower lobe. The diagnosis of pulmonary paragonimiasis was confirmed by detecting eggs of the genus Paragonimus in her wet-mount sputum. She was treated with oral praziquantel for 3 consecutive days with improvement. To our knowledge, although coinfection of pulmonary paragonimiasis and pulmonary tuberculosis is rare, it should be considered as the differential diagnosis in patients who live in the endemic area presenting with hemoptysis and eosinophilia.