Platelet-rich plasma injection for empty nose syndrome: A case report.

Empty nose syndrome (ENS) is a relatively rare disease found in patients who have undergone sinonasal surgery, characterized by excessive reduction of the turbinate, causing intranasal turbulence and loss of receptors within the nasal mucosa. Patients diagnosed with the disease usually experience symptoms including dryness of the nose, nasal pain, paradoxical nasal obstruction, and crusts in the nasal cavity. ENS can be treated with conservative care such as nasal irrigation or nasal moisturizers. Accurate efficacy of surgical treatment of ENS is often difficult to predict and is accompanied by operational obstacles and complications. Platelet-rich plasma (PRP) has recently gained attention as a regenerative therapy in several medical fields. We present two cases of ENS treated by injection of PRP as a simple and less invasive method, and describe its efficacy with nasal endoscopy and subjective questionnaires.