title: Gallbladder pseudopolyp formation following percutaneous liver biopsy.
abstract: Following an unsuccessful liver biopsy in a 16-year-old girl in which only bile was obtained, a sonographic (US) study was performed. The findings were those of free fluid just adjacent to the gallbladder as well as a small intraluminal protrusion of the gallbladder wall. The US features of the gallbladder finding were consistent with a polyp. Gallbladder polyps are very rare in children, however, sporadic case reports do exist. An US study 24 h after the invasive procedure revealed complete regression of the free fluid; the gallbladder wall protrusion has disappeared. We suggest that the tip of the biopsy needle had penetrated the gallbladder wall and caused a bile leak. The needle penetration caused elevation of the inner wall layer at the entrance site, which was indistinguishable from the sonographic findings of a gallbladder polyp [1-4]
authors.affiliation: Ultrasound Unit, Carmel Medical Center, 7 Michal Street, Haifa, Israel.
authors.forename: M
authors.initials: M
authors.lastname: Barzilai
authors.forename: N
authors.initials: N
authors.lastname: Ish-Shalom
authors.forename: A
authors.initials: A
authors.lastname: Lerner
mesh_terms: D000293:Adolescent; D001707:Biopsy, Needle / Q000009:adverse effects*; D003937:Diagnosis, Differential; D005260:Female; D005704:Gallbladder / Q000000981:diagnostic imaging / Q000293:injuries*; D005705:Gallbladder Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006801:Humans; D008099:Liver / Q000473:pathology; D011127:Polyps / Q000175:diagnosis* / Q000000981:diagnostic imaging; D014463:Ultrasonography