title: Pneumatosis intestinalis presenting as pneumoperitoneum in a teenage girl with pyloric stenosis.
abstract: A 16-year-old girl presented with free gas under the diaphragm after endoscopic balloon dilation for pyloric stenosis. There was no perforation site identified on laparotomy. However, there was massive pneumatosis intestinalis involving the entire small bowel.
authors.affiliation: Division of Paediatric Surgery, Department of Surgery, Queen Mary Hospital, The University of Hong Kong, Hong Kong.
authors.forename: C W Y
authors.initials: CW
authors.lastname: Wong
authors.affiliation: Division of Paediatric Surgery, Department of Surgery, Queen Mary Hospital, The University of Hong Kong, Hong Kong.
authors.forename: P H Y
authors.initials: PH
authors.lastname: Chung
authors.affiliation: Division of Paediatric Surgery, Department of Surgery, Queen Mary Hospital, The University of Hong Kong, Hong Kong.
authors.forename: K K Y
authors.initials: KK
authors.lastname: Wong
authors.affiliation: Division of Paediatric Surgery, Department of Surgery, Queen Mary Hospital, The University of Hong Kong, Hong Kong.
authors.forename: P K
authors.initials: PK
authors.lastname: Tam
mesh_terms: D015746:Abdominal Pain / Q000209:etiology*; D000293:Adolescent; D044466:Asian People; D003937:Diagnosis, Differential; D005260:Female; D005500:Follow-Up Studies; D015391:Gastroplasty; D006801:Humans; D011006:Pneumatosis Cystoides Intestinalis / Q000175:diagnosis* / Q000209:etiology / Q000601:surgery; D011027:Pneumoperitoneum / Q000175:diagnosis*; D011707:Pyloric Stenosis / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D011708:Pylorus / Q000601:surgery*; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome