title: Ultrasonic "hole sign": a reliable sign of perforation of the gallbladder?
authors.affiliation: Department of Medicine, Central Clinic and Hospital, Taipei, Taiwan, Republic of China.
authors.forename: W K
authors.initials: WK
authors.lastname: Chau
authors.forename: K B
authors.initials: KB
authors.lastname: Wong
authors.forename: S C
authors.initials: SC
authors.lastname: Chan
authors.forename: A T
authors.initials: AT
authors.lastname: Na
authors.forename: S
authors.initials: S
authors.lastname: Chan
authors.forename: J S
authors.initials: JS
authors.lastname: Wang
authors.forename: C M
authors.initials: CM
authors.lastname: Wong
mesh_terms: D000368:Aged; D001658:Biliary Fistula / Q000000981:diagnostic imaging; D002764:Cholecystitis / Q000000981:diagnostic imaging; D002767:Cholecystostomy; D005260:Female; D005705:Gallbladder Diseases / Q000000981:diagnostic imaging*; D006801:Humans; D012422:Rupture, Spontaneous; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography