A case of oral tuberculosis after treatment of cancer in the lower gingiva

Oral tuberculosis of primary infection is relatively rare and is considered to be secondary infection from pulmonary disease.A 66-year-old male with left mandibular tuberculosis who received cancer therapy of the same region (T1N1M0) one year ago as reported.This case was thought that immune response of the oral mucose was decreased by surgical operation and radiotherapy. So it may occur as infection from active pulmonary tuberculosis.Appearance of oral cancer and oral tuberculosis in the same region was thought very rare.