E1107. Cross-Sectional Imaging Evaluation of Non-Traumatic Orbital Lesions: Compartment-Based Diagnostic Approach
  1. Ayman Nada; University of Missouri Radiology Department
  2. Esmat Mahmoud; National Cancer Institute, Cairo University
  3. Eman Mahdi; University of Missouri Radiology Department
  4. Humera Ahsan; University of Missouri Radiology Department
  5. Joseph Cousins; University of Missouri Radiology Department
  6. Carlos Leiva-Salinas; University of Missouri Radiology Department
1. Describe the fine anatomical details of the orbit with different compartments. 2. Enumerate the anatomical contents of each compartment and normal cross-sectional imaging appearance. 3. Discuss radiological features of various non-traumatic pathological conditions related to each compartment. 4. Demonstrate a diagnostic radiological approach to cases presented with the non-traumatic orbital lesions.

Educational Goals / Teaching Points
1. Discuss the boundaries and contents of each compartment of the orbit. 2. Illustrate various compartments with common and uncommon non-traumatic lesions of each compartment. 3. Illustrate the typical and atypical radiological features of the pathological conditions involving various compartments of the orbit. 4. Discuss other mimics and key differentiating points.

Key Anatomic/Physiologic Issues and Imaging Findings/Techniques
The orbit could be classified into several compartments, through which compartment certain common and uncommon non-traumatic pathologic disorders could occur. Cross-sectional imaging evaluation of patients presented with the orbital lesions is very important. Using a systematic compartment diagnostic approach could help to differentiate between various non-traumatic pathologies of the orbits.

Cross-imaging evaluation of orbital lesions is helpful to delineate orbital pathology and narrow differential diagnosis.