Potentially malignant oral disorders and high‐risk habits in liver cirrhosis and lung cancer patients

Objectives To analyze the role of smoking, drinking, and their synergistic effect in the occurrence of potentially malignant oral disorders ( PMOD ). Subjects and methods We examined three groups: 50 patients with lung cancer, 50 patients with liver cirrhosis, and 50 patients with clear medical history. Scores were developed for drinking, smoking, drinking & smoking, and PMOD . Results All four scores were the lowest in the control group. The lung cancer group showed the highest Smoking, Alcohol & Smoking and Lesions score, while the liver cirrhosis group had the Alcohol score the highest. Compared with the control group, lung cancer group is more likely to develop a PMOD than the liver cirrhosis group ( OR  = 12.31/OR = 6.71). Statistical significance between the groups was found in the Lesions score (χ 2  = 15.34; P  = 0.001). Conclusions The patients with lung cancer and liver cirrhosis represent a high‐risk group for PMOD . Patients with lung cancer and liver cirrhosis have never, to our knowledge, been categorized as high‐risk patients for PMOD . After diagnosed, patients with lung cancer and liver cirrhosis should have a routine oral cavity examination, as they present a high‐risk group for PMOD and oral cancer.