RESUMEN
Strongyloides stercoralis is an intestinal nematode that infects a large portion of the world's population, especially in tropical areas and other hot, humid regions. In immunocompromised patients, the parasite is augmented by autoinfection, resulting in hyperinfection or systemic dissemination. Pulmonary hemorrhage is a rare presentation of Strongyloides hyperinfection. We experienced a case of Strongyloides hyperinfection with alveolar hemorrhage in an immunocompromised patient. A 63-year-old man with small cell lung carcinoma on chemotherapy presented with abdominal pain and dyspnea. He developed a pulmonary hemorrhage and migrating pneumonia 1 week later, and bronchoalveolar lavage cytology revealed helminthic larvae identified as Strongyloides. The patient received albendazole therapy for 6 weeks, and the Strongyloides hyperinfection and pneumonia were resolved.