title: Respiratory obstruction and haematemesis due to leech.
mesh_terms: D000402:Airway Obstruction / Q000209:etiology*; D002675:Child, Preschool; D005547:Foreign Bodies / Q000150:complications*; D005683:Gagging; D006396:Hematemesis / Q000209:etiology*; D006801:Humans; D007865:Leeches; D008297:Male; D010614:Pharynx / Q000293:injuries*