Oral cancer and precancerous lesions are significant health concerns, accounting for about 3% of all malignancies in men and 2% in women in the United States. Approximately 28,900 new cases of oral cancer are expected in 2002, with nearly 7,400 deaths. Over 90% of these tumors are squamous cell carcinomas, which arise from the oral mucosal lining. Despite the accessibility of the oral cavity for examination, these malignancies are often detected at a late stage, with survival rates remaining largely unchanged over the past three decades. Early detection is crucial for improving survival rates. Oral cancer is more common in middle-aged and older individuals, with a male-to-female ratio of over 2:1. However, this disparity has decreased over the past half-century due to increased exposure of women to oral carcinogens. The incidence of oral and pharyngeal cancer is higher in African Americans compared to whites. Risk factors include tobacco use, alcohol consumption, and betel quid chewing. Human papillomavirus (HPV) and dietary factors may also contribute to the risk. Leukoplakia, a white patch that cannot be diagnosed as any other condition, is common in middle-aged and older men. It can be a precursor to cancer, with up to 39.2% showing dysplastic or malignant changes. Erythroplakia, a red patch, is less common but more likely to show dysplasia or carcinoma. Both conditions require biopsy for accurate diagnosis. Tobacco-related conditions such as nicotine stomatitis and tobacco pouch keratosis are also common. These conditions are often reversible upon cessation of tobacco use. However, some forms, like proliferative verrucous leukoplakia, are high-risk and may transform into cancer. Early detection through regular oral examinations is essential. The American Cancer Society recommends annual check-ups for individuals aged 40 and older. Clinicians should be vigilant in identifying suspicious lesions, especially in high-risk individuals. Public education is necessary to encourage regular screenings and to reduce high-risk behaviors. Treatment options vary based on the stage and location of the cancer. Surgery and radiation therapy are standard treatments for early-stage cancers. For advanced cases, a multidisciplinary approach involving various specialists is often required. Early diagnosis and prevention remain key to improving outcomes for oral cancer patients.Oral cancer and precancerous lesions are significant health concerns, accounting for about 3% of all malignancies in men and 2% in women in the United States. Approximately 28,900 new cases of oral cancer are expected in 2002, with nearly 7,400 deaths. Over 90% of these tumors are squamous cell carcinomas, which arise from the oral mucosal lining. Despite the accessibility of the oral cavity for examination, these malignancies are often detected at a late stage, with survival rates remaining largely unchanged over the past three decades. Early detection is crucial for improving survival rates. Oral cancer is more common in middle-aged and older individuals, with a male-to-female ratio of over 2:1. However, this disparity has decreased over the past half-century due to increased exposure of women to oral carcinogens. The incidence of oral and pharyngeal cancer is higher in African Americans compared to whites. Risk factors include tobacco use, alcohol consumption, and betel quid chewing. Human papillomavirus (HPV) and dietary factors may also contribute to the risk. Leukoplakia, a white patch that cannot be diagnosed as any other condition, is common in middle-aged and older men. It can be a precursor to cancer, with up to 39.2% showing dysplastic or malignant changes. Erythroplakia, a red patch, is less common but more likely to show dysplasia or carcinoma. Both conditions require biopsy for accurate diagnosis. Tobacco-related conditions such as nicotine stomatitis and tobacco pouch keratosis are also common. These conditions are often reversible upon cessation of tobacco use. However, some forms, like proliferative verrucous leukoplakia, are high-risk and may transform into cancer. Early detection through regular oral examinations is essential. The American Cancer Society recommends annual check-ups for individuals aged 40 and older. Clinicians should be vigilant in identifying suspicious lesions, especially in high-risk individuals. Public education is necessary to encourage regular screenings and to reduce high-risk behaviors. Treatment options vary based on the stage and location of the cancer. Surgery and radiation therapy are standard treatments for early-stage cancers. For advanced cases, a multidisciplinary approach involving various specialists is often required. Early diagnosis and prevention remain key to improving outcomes for oral cancer patients.