title: The pseudocalculus sign.
authors.affiliation: Department of Diagnostic Radiology, Medical College of Virginia, Virginia Commonwealth University, PO Box 980615, Richmond, VA 23298-0615, USA. psamardar@yahoo.com
authors.forename: Polya
authors.initials: P
authors.lastname: Samardar
mesh_terms: D005189:False Positive Reactions; D042882:Gallstones / Q000000981:diagnostic imaging*; D006801:Humans; D011859:Radiography