A 42-year-old woman undergoes axial CT pelvis for evaluation of chronic pelvic pain. The structure marked **A** in the diagram is identified in the midline pelvis, positioned anterior to the rectum and posterior to the bladder. On careful review, the fundus of this structure is noted to be tilted posteriorly relative to the body. During a subsequent gynecologic examination, she reports dyspareunia and dysmenorrhea. Which of the following best describes the positional abnormality of the structure marked **A** and its likely clinical significance?