[A HTLV-I carrier initially treated for Pneumocystis carinii pneumonia].

A 65-year-old woman was admitted to the hospital with complaints of dyspnea on effort Chest radiography and CT revealed bilateral interstitial infiltration. Transbronchial lung biopsy specimens revealed organisms of Pneumocystis carinii. Sulfamethoxazole-trimethoprim improved the patient's radiograph and CT, and although a positive reaction was obtained for anti-HTLV-I antibody, the hematological findings and clinical symptoms did not suggest that she had an ATL. Since discharge, she has been receiving maintenance therapy at the outpatient clinic because an opportunistic infection is predictive of the development of ATL.