Oral Iron vs. Placebo in Newly Diagnosed Gynecologic Oncology Patients Who Are Surgical Candidates.

Inclusion Criteria: * Over the age of 18 * Scheduled for primary operative procedure within 3-6 weeks of initial consult clinic visit with endometrial cancer, uterine sarcoma, cervical cancer, ovarian/fallopian tube cancer or patients with pelvic mass and a high suspicion of a gynecologic malignancy. Exclusion Criteria: * Patient with known allergy to ferrous fumarate. * Patient's on IV Iron or erythropoietin treatment at the time of recruitment * Patient's who are not primary surgical candidates. * Patient's with a known hemoglobinopathy or a hypoproliferative hematologic disorder * Patient who have significant active vaginal bleeding * Patient who have a hemoglobin \< 80 g/L will be removed from randomization and referred to blood conservation at Sunnybrook Health SCiences Centre.