CASE HISTORY/EXAMINATION
A 58 years old patient, with diabete, bilateral knee osteoarthritis, history of appendectomy, smoking cessation for 2 years at diagnosis in 2015, without alcoholism, allergic nor atopic background, no family hematological history and no travel in a tropical area or parasitic endemic area. The patient was followed since April 2015 by his general pratician for a dry cough with dyspnea. The blood count found a hypereosinophilia at 4633/mm3, the rest of the blood cell count as well as reds and platelets being normal.