title: A case of portal venous gas secondary to acute appendicitis detected on gray scale sonography but not computed tomography.
authors.affiliation: Department of Radiology, Geneva University Hospital, 24 rue Micheli-du-Crest, 1211 Geneva 14, Switzerland. diego.sanmillan@hcuge.ch
authors.forename: Diego San Millán
authors.initials: DS
authors.lastname: Ruíz
authors.forename: Thomas
authors.initials: T
authors.lastname: de Perrot
authors.forename: Pietro E
authors.initials: PE
authors.lastname: Majno
mesh_terms: D000208:Acute Disease; D000328:Adult; D001064:Appendicitis / Q000150:complications*; D005188:False Negative Reactions; D005740:Gases; D006801:Humans; D008297:Male; D011169:Portal Vein / Q000000981:diagnostic imaging*; D011859:Radiography; D014463:Ultrasonography; D014652:Vascular Diseases / Q000000981:diagnostic imaging / Q000209:etiology
chemical_list: D005740:Gases