Imaging Guidelines for Nasal Obstruction and Epistaxis: European Society Recommendations

Overview

This report summarizes evidence-based imaging recommendations for nasal obstruction and epistaxis. Non-contrast CT is strongly recommended for structural nasal obstruction evaluation, while imaging in epistaxis is reserved for severe or recurrent cases to identify vascular sources and underlying pathology.

Background

Nasal obstruction and epistaxis are common clinical presentations affecting all age groups, often due to benign causes but occasionally indicating serious conditions. Initial assessment relies on clinical history and nasal endoscopy, with imaging playing a key role when findings are inconclusive or interventions are planned. Structural causes of nasal obstruction include mucosal disease, turbinate hypertrophy, and septal deviation, while epistaxis may result from trauma, systemic factors, or neoplasms. Imaging aids in diagnosis, surgical planning, and management of complex cases.

Data Highlights

Imaging recommendations include: Non-contrast CT for nasal obstruction (Level 1b evidence, Class I recommendation); Imaging for epistaxis reserved for severe/recurrent/posterior bleeding (Level 2b evidence, Class IIa recommendation). Nasal obstruction affects approximately 30–40% of the population. Sinonasal neoplasms represent 3% of head and neck cancers, with squamous cell carcinoma comprising 80% of malignant cases. Epistaxis accounts for about 1 in 30 emergency department visits, with posterior epistaxis comprising 5–10% of cases.

Key Findings

• Initial clinical assessment and nasal endoscopy are strongly recommended to guide imaging decisions in nasal obstruction and epistaxis (Level 2a, Class I).
• Non-contrast CT is the preferred imaging modality for structural nasal obstruction and is strongly recommended before surgery (Level 1b, Class I).
• Imaging in epistaxis should be limited to severe, recurrent, or posterior bleeding to localize vascular sources and exclude underlying pathology (Level 2b, Class IIa).
• Common causes of nasal obstruction include mucosal disease, turbinate enlargement, and septal deviation; neoplasms are rare but require imaging for diagnosis and surgical planning.
• Epistaxis is frequently caused by trauma, systemic factors, or iatrogenic injury; anterior bleeding is common and usually managed conservatively, while posterior bleeding is less common and more challenging.
• Juvenile nasopharyngeal angiofibroma is a vascular tumor in adolescent males with characteristic imaging features important for diagnosis and treatment planning.

Clinical Implications

Clinicians should prioritize clinical assessment and nasal endoscopy to determine the need for imaging in nasal obstruction and epistaxis. Non-contrast CT is essential for evaluating structural causes before surgical intervention. Imaging for epistaxis should be reserved for complicated cases to guide targeted management and exclude serious underlying conditions.

Conclusion

Evidence-based imaging guidelines emphasize the role of clinical evaluation and targeted imaging to optimize diagnosis and management of nasal obstruction and epistaxis. Appropriate use of CT and selective imaging in epistaxis improves patient outcomes and resource utilization.

References

1. European Society of Head and Neck Radiology -- Imaging Guidelines for Nasal Obstruction and Epistaxis