Pelvic masses represent a spectrum of gynecologic and nongynecologic conditions usually originating from the adnexa, uterus, or other pelvic organs (intestine, urinary tract, and surrounding connective tissue). The lifetime risk of a woman in the United States undergoing surgery for a suspected ovarian neoplasm is 5% to 10%.[1] OB/GYN hospitalists are often called to consult or manage a symptomatic pelvic mass or to evaluate an incidental mass noted intraoperatively, on examination, or after imaging. The most common adnexal problems managed by OB/GYN hospitalists include ectopic pregnancies, ovarian torsion, hemorrhagic cysts, and tubo-ovarian abscesses. OB/GYN hospitalists are uniquely positioned to assess whether a mass is gynecologic in origin, initiate appropriate diagnostic studies, determine likelihood of malignancy, and determine whether urgent intervention is warranted. When clinically indicated, expeditious surgical management via laparoscopy or laparotomy can minimize morbidity and mortality.