A 66-year-old patient presented with Pneumocystis carinii Pneumonia (PCP) and was found to have hypogammaglobulinemia, associated with a thymoma that had been resected 17 months earlier. Only one previous case of PCP in association with a thymoma and hypogammaglobulinemia has been reported, in which the patient died. We report another such patient who was successfully treated with a combination of intravenous immunoglobulin and high dose cotrimoxazole.
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