title: Portal venous gas. Report of three cases.
abstract: When portal venous gas (PVG) is found, it is usually considered an ominous sign. It is now more frequently found because of the improvement in imaging studies, mainly through computed tomography (CT). It was first related primarily to mesenteric ischemia. However, it is now identified in other conditions and the prognosis is not related to the presence in itself of PVG, but to the nature and severity of the underlying condition or disease that causes it. Next, we report three patients with portal venous gas that were seen at our surgical department. All the patients presented acute abdominal pain and during their diagnostic studies, portal venous gas was identified. Intestinal ischemia was diagnosed in two of them, who underwent an exploratory laparotomy, one of them died within 24 hours. In the other patient, the pain subsided and was treated medically and the recovery was uneventful.
  
  
  CONCLUSIONS
  the most important factor related to portal venous gas is the disease that caused it. The most common cause of PVG is mesenteric ischemia, so every effort should be made to rule it out, as the prognosis is related to an early diagnosis and almost all patients require surgery. Other causes had been reported and conservative treatment could be used in selected cases.
authors.affiliation: Department of General and Gastrointestinal Surgery, UMAE Hospital de Especialidades CMN Siglo XXI (IMSS), México City, México. jlmo1968@yahoo.com
authors.forename: José-Luis
authors.initials: JL
authors.lastname: Martínez
authors.forename: Jorge
authors.initials: J
authors.lastname: González-Acosta
mesh_terms: D015746:Abdominal Pain / Q000209:etiology; D000328:Adult; D000369:Aged, 80 and over; D017809:Fatal Outcome; D005260:Female; D005740:Gases; D006801:Humans; D007422:Intestines / Q000098:blood supply*; D007511:Ischemia / Q000150:complications* / Q000000981:diagnostic imaging / Q000628:therapy; D008107:Liver Diseases / Q000000981:diagnostic imaging / Q000209:etiology* / Q000628:therapy; D008875:Middle Aged; D011006:Pneumatosis Cystoides Intestinalis / Q000209:etiology; D011169:Portal Vein / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed
chemical_list: D005740:Gases