|Classification and external resources|
Mallory–Weiss syndrome or gastro-esophageal laceration syndrome refers to bleeding from tears (a Mallory-Weiss tear) in the mucosa at the junction of the stomach and esophagus, usually caused by severe alcoholism, retching, coughing, or vomiting.
It is often associated with alcoholism and eating disorders and there is some evidence that presence of a hiatal hernia is a predisposing condition. Forceful vomiting causes tear of the mucosa at the junction.
NSAID abuse is also a rare association. The tear involves mucosa and submucosa but not the muscular layer (contrast to Boerhaave syndrome which involves all the layers). The mean age is more than 60 and 80% are men. Hyperemesis gravidarum which is severe morning sickness associated with vomiting and retching in pregnancy also is a known cause of Mallory-Weiss tear.
Mallory–Weiss syndrome often presents as an episode of vomiting up blood (hematemesis) after violent retching or vomiting, but may also be noticed as old blood in the stool (melena), and a history of retching may be absent.
Definitive diagnosis is by endoscopy.
Treatment is usually supportive as persistent bleeding is uncommon. However cauterization or injection of epinephrine to stop the bleeding may be undertaken during the index endoscopy procedure. Very rarely embolization of the arteries supplying the region may be required to stop the bleeding. If all other methods fail, high gastrostomy can be used to ligate the bleeding vessel. It is to be noted that the tube will not be able to stop bleeding as here the bleeding is arterial and the pressure in the balloon is not sufficient to overcome the arterial pressure.
- Boerhaave syndrome — Full thickness esophageal ruptures also often secondary to vomiting/retching.