Photoacoustic Endoscopy in Endometrial Cancer

Inclusion Criteria: * Women diagnosed with benign gynecologic pathology (N=10) or biopsy proven endometrial cancer (N=10) who will undergo hysterectomy. * Participants must be ≥ 18 years of age. * Subjects of reproductive potential must have a negative pregnancy test prior to study photoacoustic endoscopy procedure and hysterectomy. * Subjects must be able understand and willing to sign a written informed consent form. Exclusion Criteria: * Subjects with contraindications for general anesthesia or hysterectomy. * Subjects with evidence of active pelvic inflammatory disease or purulent cervicitis. * Subjects with prior endometrial ablation procedures. * Gross tumoral involvement of the cervix or lower genital tract precluding cervical dilatation and endometrial sounding.