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Updated: Oct 20, 2025
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Published on: February 28, 2025
Chronic cough caused by choledochoduodenal fistula: a case report
Jiaofei Cao1, Yue Hu2, Shaojun Jin3
1Department of Internal Medicine, The Second Affiliated Hospital of Medical School, Zhejiang University, Hangzhou, Zhejiang, China.
Background:
Chronic cough is characterized by cough as the only or main symptom, with a duration of more than 8 weeks and no obvious abnormality in chest X-ray examination. Its etiology is complex, including respiratory disease, digestive system disease, circulation system disease, and psychological disease. Although a set of etiological diagnosis procedures for chronic cough have been established, it is still difficult to diagnose chronic cough and there are still some patients with misdiagnosis.
Case Presentation:
We present a case of a 54-year-old female patient who had chronic cough for 28 years. Physical examination had no positive signs and she denied any illness causing cough like tuberculosis, rhinitis. Recurrent clinic visits and symptomatic treatment didn't improve the condition. Finally, gastroscopy identified the possible etiology of choledochoduodenal fistula that was proved by surgery. And after surgery, the patient's cough symptoms were significantly improved.
Conclusion:
We report a rare case of chronic cough caused by choledochoduodenal fistula which demonstrates our as yet inadequate recognition of the etiology and pathogenesis. Written informed consent was obtained from the patient.
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