[A case of high intestinal obstruction caused by mycotic bezoar of the duodenum].

A case of the mycotic bezoar in the female patient with gastric hypersecretion is reported. The symptoms of the high intestinal obstruction accompanied underlying disease. Bezoar formed of Geotrichum candidum was fragmentated with biopsical forceps of "alligator" type. Then, natamycin was administered for 5 weeks. The patients recovered completely.