[Pulmonary hydatid cyst. Presentation of a case]

One case of pulmonary hydatid cyst from Venezuela is reported. A 54-year-old man from Syria, was admitted to the hospital because of dyspnoea, fever and weight loss. A thoracic roentgenogram revealed a tumor in the basis of the left lung; a lobectomy was carried out. Histological study showed an unilocular hydatid cyst. The presence of scolices in alveoli and vessels suggest a probable dissemination of the parasite. Due to the rarity of the pulmonary hydatid cyst in Venezuela, the case is reported to call the attention about the existence of this pathology in the country, so that it can be diagnosed and treated correctly.