[An unusual case of morbid weight loss].

A 47 year old patient was admitted because of 20 kg weight loss and microcytic anaemia. There wasn't any important disease in his medical history. During examinations it has been found microcytic anaemia, hypoproteinaemia, low serum potassium, elevated prothrombin INR value, malabsorption and mild hepatosplenomegaly. After precluding the possibility of malignant disorders and any other chronic diseases, examinations have cleared Whipple-disease.