<prompt> Staging of ovarian cancer when rectum is involvedStage IStage 2Stage 3Stage 4  <response>: -Stage II ovarian cancer: tumor involves one or both ovaries or fallopian tubes with pelvic extension or primary peritoneal cancer. IIA: ovarian tumor involving uterus or fallopian tubes IIB: ovarian tumor involving pelvic intraperitoneal organs bladder, rectum or pelvic side walls Reference : textbook of gynaecology Sheila balakrishnan, 2nd edition, pg no:277 p 