Table Nongynecologic disorders Nongynecologic disorders that can cause pelvic pain may occur in any system located in the pelvis: Gastrointestinal (eg, tumors, constipation, inflammatory bowel disease, high perirectal abscess) Urinary (eg, cystitis, interstitial cystitis, calculi) Musculoskeletal (eg, myofascial pain, abdominal muscle strains) Vascular (rapid expansion or rupture of aortic aneurysm) Evaluation of Pelvic Pain Evaluation of acute pelvic pain must be expeditious because some causes (eg, ectopic pregnancy, adnexal torsion) require immediate treatment.