Study Status: Withdrawn
Recruit Status: Withdrawn
Study Type: Interventional
Official Title: Evaluation of the Effect of 25-OH-Vitamin D3 Therapy on 15-Prostaglandin Dehydrogenase Expression in Primary Tumor and Normal Colorectal Mucosa in Patients With Colorectal Cancer
Brief Summary: This pilot clinical trial studies cholecalciferol in treating patients with colorectal cancer. The use of cholecalciferol may slow disease progression in patients with colorectal cancer.