[A comfrey phytobezoar; a case report].
D000328:Adult; D001249:Asthma / Q000188:drug therapy; D002137:Calculi / Q000209:etiology*; D006801:Humans; D008297:Male; D010944:Plants; D010946:Plants, Medicinal; D013272:Stomach Diseases / Q000209:etiology*