Eosinophilia is not a rare phenomenon, but patients with an eosinophil count exceeding 90 per cent are very uncommon. In the following case the differential count showed an eosinophil count which was constantly above 90 per cent and on several occasions as high as 98 and 99 per cent.
REPORT OF CASE
R. C., a Negro aged 21, referred by Dr. Robert Moore of Lansing, Kan., admitted to the University of Kansas Hospitals April 14, 1938, complained of fever, sweats, weakness and loss of weight. The family history was essentially negative. There was no history of tuberculosis, carcinoma, diabetes, epilepsy or heart disease. The personal history was essentially negative.In 1936 the patient was in an automobile accident and injured his right biceps. Nov. 20, 1937, he was operated on for repair of the injury and during the month of December suffered from what he described as "pleurisy