RESUMO
Chloroma, a tumor consisted of primitive myeloid cells and located in extramedullary tissues, usually develops during or preceding the course of systemic leukemia, particularly acute myelogenous leukemia (FAB M2) with translocation between chromosomes 8 and 21. Leukemic retinopathy which observed rarely in children than adults, generally related to thrombocytopenia and anemia in leukemic patients. Bronchiolitis obliterans organizing pneumonia (BOOP) is unusual clinicopathologic syndrome in association with a variety of causes or conditions, and histologically defined by the presentation of granulation tissue plugs consisting of fibroblasts and collagen within the lumen of the distal air space. We experienced a 12-year old girl who presented with weakness and ocular pain. She was diagnosed with acute myeloid leukemia with chloroma and retinopathy, and treated with chemotherapy (daunomycin, ara-C, thioguanine, etoposide. mitoxantrone, cyclosporin). Five weeks after the chemotherapy, she developed coughing and persistent fever, and diagnosed with BOOP, which resolved completely after prednisolone therapy.