Background. There is no previous report of autoimmune hemolytic anemia manifesting after bronchoscopic examination. Case. A 73-year-old woman presented with a dry cough. Computed tomography revealed a nodule measuring 4×2 cm in size at the base of the left lung. A bronchoscopic examination revealed malignancy in the form of adenocarcinoma. Two days later, the patient was admitted to the emergency department with complaints of dizziness. The direct Coombs test yielded positive findings, and the patient was diagnosed with autoimmune hemolytic anemia. The patient received treatment with oral steroids because of the positive Coombs test results, but no first-line chemotherapy for lung cancer was performed. However, her performance status gradually declined. The patient died 2 months after the initial administration of oral steroids. Conclusions. This report highlights the possibility of autoimmune hemolytic anemia occurring after bronchoscopic examination in a patient with primary lung cancer.