摘要: Transitory pulmonary infiltrations associated with eosinophilia of the peripheral blood has been described as an allergic reaction ocurring principally in persons parasitic disease such amebiasis, trichinosis, ascariasis and cutaneous helminthiasis. 1 This condition, usually referred to Loeffler's syndrome, is somewhat variable its course severity, but generally characterized by relatively mild clinical symptoms, which include fever, paroxysmal cough sputum containing eosinophils, slight moderate leukocytosis migratory evident roentgenographically. 2 A plausible theory mechanism involved syndrome that vascular system becomes hypersensitized extrinsic allergen small vessels capillaries lungs act one shock structures. The damage these causes increased permeability their walls, resulting infiltrations. 3 We have recently observed patients reactions penicillin oil