[Imaging of the paranasal sinus]

Area of Science:

• Radiology
• Otolaryngology
• Medical Imaging

Background:

• The paranasal sinuses are complex aerated bony spaces with narrow drainage pathways.
• Anatomical proximity to critical structures like the orbit and anterior cranial fossa complicates diagnosis.
• Sinonasal diseases require accurate imaging for effective management and surgical planning.

Purpose of the Study:

• To elucidate the complementary roles of CT and MRI in diagnosing sinonasal diseases.
• To highlight characteristic imaging findings for both neoplastic and non-neoplastic sinonasal conditions.
• To emphasize the importance of advanced imaging in surgical planning and differential diagnosis.

Main Methods:

• Review of typical and characteristic findings on CT and MRI for various sinonasal diseases.
• Comparative analysis of CT and MRI capabilities in evaluating sinonasal anatomy and pathology.
• Discussion of imaging features relevant to preoperative planning for endoscopic sinus surgery.

Main Results:

• CT is effective for assessing bony structures, drainage pathways, and septal deviations in sinonasal sinusitis.
• MRI demonstrates superior contrast resolution, crucial for evaluating soft tissue invasion and malignancy.
• Combined CT and MRI provide comprehensive diagnostic information, aiding in differentiating benign from malignant lesions.

Conclusions:

• CT and MRI offer complementary information for diagnosing sinonasal diseases.
• MRI is essential for assessing tumor extent and soft tissue involvement, complementing CT findings.
• Accurate sinonasal imaging is vital for precise diagnosis, surgical planning, and patient management.