When a Benign Tumor Turns Troublesome: A Case Report of Deep Lipoma Compressing the Posterior Interosseous Nerve

This case report presents a rare instance of posterior interosseous nerve (PIN) compression caused by a deep lipoma in a patient. The patient was undiagnosed even after visiting multiple doctors and obvious clinical signs were missed. The clinical presentation, diagnostic approach, surgical intervention, and outcome are discussed. This case highlights the importance of considering rare causes of nerve compression and underscores the critical role of clinical examination in guiding diagnosis and management, particularly in resource‐constrained environments. Furthermore, this case also shows that good recovery can be achieved even when there is severe and prolonged compression.