Oral squamous cell carcinoma and associated risk factors in Jazan, Saudi Arabia: a hospital based case control study.

Background: Oral cancer is the third most common malignancy in Saudi Arabia, the highest incidence of which is reported from Jazan province. The objective of this study was to evaluate the association of various locally used substances, especially shamma, with oral cancer in the Jazan region of Saudi Arabia.

Materials And Methods: A hospital-based case-control study was designed and patient records were scanned for histologically confirmed oral cancer cases.