title: Rigler sign.
authors.affiliation: Department of Radiodiagnosis, Sree Balaji Medical College and Hospital, 7 Works Road, Chromepet, Chennai, Tamilnadu, 600044, India. ivraman31@gmail.com.
authors.forename: Venkatraman
authors.identifier: http://orcid.org/0000-0001-5296-0175
authors.initials: V
authors.lastname: Indiran
authors.affiliation: Department of Radiodiagnosis, Meenakshi Medical College Hospital and Research Institute, Enathur, Karrapettai Post, Kanchipuram, Tamilnadu, 631 552, India.
authors.forename: V
authors.initials: V
authors.lastname: Sivakumar
mesh_terms: D006801:Humans; D010529:Peritoneal Cavity / Q000000981:diagnostic imaging; D011027:Pneumoperitoneum / Q000000981:diagnostic imaging*; D011859:Radiography / Q000379:methods; D014057:Tomography, X-Ray Computed / Q000379:methods