Ultrasound-guided Tru-Cut Biopsy in Pelvic Masses.

This study examines the safety and accuracy of using ultrasound-guided needle biopsies (called Tru-Cut biopsies) to obtain tissue samples from pelvic masses in women, to help diagnose gynecologic tumors or gather tissue for research purposes. **You may be eligible if...** - You have a pelvic mass that can be safely reached by biopsy needle (no organs or blood vessels in the way) - Your mass has a solid component (purely fluid-filled cysts are excluded) - You are enrolled in or being considered for a clinical trial that requires a biopsy for research **You may NOT be eligible if...** - The mass is purely cystic (no solid part) - The mass cannot be safely accessed by the biopsy needle - You have conditions such as vaginal stenosis that prevent a transvaginal approach (where applicable) Talk to your doctor to see if this trial is right for you.