title: Adnexal ring of ectopic pregnancy detected by contrast-enhanced CT.
abstract: We present a case of a 37-year-old woman who presented with acute right lower quadrant abdominal pain. Work up with contrast enhanced CT to rule out appendicitis revealed dramatic ring enhancing cystic structure in the right adnexa corresponding to tubal ring sign of ectopic pregnancy seen on subsequent pelvic ultrasound. Right tubal ectopic pregnancy was confirmed at surgery.
authors.affiliation: Department of Radiology C5-XR, Virginia Mason Medical Center, 1100 9th Ave., Seattle, WA 98111, USA.
authors.forename: Hong
authors.initials: H
authors.lastname: Pham
authors.forename: Eugene C
authors.initials: EC
authors.lastname: Lin
mesh_terms: D015746:Abdominal Pain / Q000000981:diagnostic imaging; D000290:Adnexa Uteri / Q000000981:diagnostic imaging*; D000328:Adult; D001064:Appendicitis / Q000000981:diagnostic imaging; D003287:Contrast Media; D003937:Diagnosis, Differential; D005260:Female; D006465:Hemoperitoneum / Q000175:diagnosis; D006801:Humans; D011247:Pregnancy; D011274:Pregnancy, Tubal / Q000000981:diagnostic imaging*; D011856:Radiographic Image Enhancement; D012421:Rupture; D014057:Tomography, X-Ray Computed; D018615:Ultrasonography, Doppler, Color
chemical_list: D003287:Contrast Media