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Published on: December 12, 2025
Amiodarone-induced epididymitis: a pathologically confirmed case report and review of the literature
Yi Shen1, Hongyun Liu, Jianguo Cheng
1Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Public Health; Department of Cardiology, Qilu Hospital, Shandong University, Jinan, China.
Abstract:
We report a case of amiodarone-induced epididymitis and review the pertinent literature. This disease is currently a diagnosis of exclusion and is believed to be self-limiting. We found new evidence for the pathological diagnosis and identified amiodarone-like crystals in the epididymis as a pathological mechanism of this disease. This case also suggests that amiodarone-induced epididymitis is not self-limiting. Continued use of amiodarone according to the current guidelines led to a bilateral epididymectomy. We recommend withdrawal or reduction of amiodarone dosage immediately once the signs and symptoms of epididymitis present in this population of patients. When epididymitis does not seem to be caused by an infection or any other identifiable etiology, this should not be overlooked by the cardiologist, urologist or general practitioner. These findings and recommendations should help reduce the suffering of patients and improve their clinical outcomes.
Insights
Amiodarone can cause epididymitis, a condition previously thought to be self-limiting. This study identifies amiodarone crystals in the epididymis, suggesting the drug is the cause and the condition is not self-limiting.
Area of Science:
- Cardiology
- Urology
- Pathology
Background:
- Amiodarone is a widely used antiarrhythmic medication.
- Epididymitis is an inflammation of the epididymis, often diagnosed by exclusion.
- Current understanding suggests amiodarone-induced epididymitis is self-limiting.
Observation:
- A case of amiodarone-induced epididymitis is presented.
- Amiodarone-like crystals were identified within the epididymis.
- The condition necessitated bilateral epididymectomy despite adherence to treatment guidelines.
Findings:
- Pathological evidence confirms amiodarone crystals as a mechanism for epididymitis.
- Amiodarone-induced epididymitis is demonstrated to be non-self-limiting.
- Continued amiodarone use can lead to severe outcomes, including surgical intervention.
Implications:
- Early recognition and management of amiodarone-induced epididymitis are crucial.
- Withdrawal or dose reduction of amiodarone is recommended upon symptom onset.
- This condition should be considered in patients with non-infectious epididymitis, prompting specialist consultation.
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