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E1622. Pathologic Conditions of the Major Salivary Glands: A Pictorial Review
Authors
  1. Anisha Shetty; University of Rochester
  2. Abhinav Patel; University of Rochester
  3. Havisha Munjal; University of Rochester
  4. Akshaar Brahmbhatt; University of Rochester
  5. Vikram Dogra; University of Rochester
Background
The salivary glands can suffer from a wide range of pathologies and become a source of significant distress to patients. Skillful interpretation of diagnostic imaging can play a key role in helping to differentiate these conditions, leading to appropriate diagnosis and treatment. However, due to the rarity of many salivary gland pathologies, the practicing radiologist may not encounter these frequently. This exhibit will provide an overview of the spectrum of pathologies found in the major salivary glands and their characteristic findings across various imaging modalities.

Educational Goals / Teaching Points
Describe the anatomy, basic histology and pathophysiology of the major salivary glands. Highlight important imaging modalities used to evaluate the salivary gland, including Sialography, Scintigraphy, Ultrasonography, Computed Tomography, and Magnetic Resonance Imaging, as well as their indication for use. Review both benign and malignant diseases of the salivary gland, with associated findings across various imaging modalities. Provide methods to help differentiate benign versus malignant lesions on imaging.

Key Anatomic/Physiologic Issues and Imaging Findings/Techniques
The parotid, submandibular, and sublingual glands can be subject to a variety of pathologic conditions. Patients can present with unifocal or multifocal swelling, pain, tenderness, or erythema. Since symptoms can often be nonspecific, imaging plays an integral role in evaluation. Ultrasound, CT, MRI, sialography, and scintigraphy are all potential modalities to elucidate the presence of disease. Imaging can identify whether the etiology is intraglandular or extraglandular and help differentiate benign lesions from malignant lesions. In this exhibit, we will review benign conditions of neoplastic (pleomorphic adenoma, warthin tumor, etc.), inflammatory (acute and chronic inflammation, abscess, sialadenitis, granulomatous sialadenitis, sjogren syndrome, sialolithiasis, etc.) and other etiologies (hemangioma, irradiation, sialosis, cyst, etc.), as well as malignant conditions (mucoepidermoid carcinoma, adenoid cystic carcinoma, metastases, etc.).

Conclusion
Since symptoms of salivary gland pathology can be nonspecific, imaging can be an essential tool in identification. It is imperative for the practicing radiologist to be aware of findings of different salivary gland pathologies across various imaging modalities so a diagnosis can be made, allowing for medical or surgical management to take place.