1. The incarcerated gravid uterus;Gibbons;Obstet Gynecol,1969
2. Retroverted impacted gravid uterus with acute urinary retention: report of two cases and a review of the literature;Silva;Obstet Gynecol,1986
3. Anterior sacculation of the pregnant uterus at term;Cehelsky;Am J Obstet Gynecol,1967