Unilateral pulmonary edema and acute rheumatic fever.

Although the diagnostic criteria for acute rheumatic fever (ARF) are well known, a high index of suspicion is necessary in order to assure timely diagnosis and appropriate treatment. We present a case of an 8-year-old child who presented with unilateral pulmonary edema secondary to acute mitral insufficiency due to ARF. ARF should be considered in the differential diagnosis of unilateral pulmonary edema in children.