A 63-year-old male with marked eosinophilia and dyspnoea on exertion

A 63-year-old male farmer presented marked eosinophilia. He had no symptoms of fever, night sweats or weight loss and no signs of anaemia, jaundice or lymphadenopathy. The leucocyte count was 17.27×109/l, with 53.1% eosinophils, but no eggs or parasites were found in his faeces. Blood chemistry results were within normal limits except for an elevated alanine aminotransferase level of 77 U/l. Serum total …