Table 2. Three categories of orbital disease and specific diseases included.

Clinical diagnosis category	Number of scans (% of total scans)	Specific diagnoses (number of scans)
Orbital infection	14 (7.3%)	Orbital cellulitis (n = 14)
Orbital inflammation	144 (75.4%)	Thyroid eye disease (n = 69) Non-specific orbital inflammation (n = 44) IgG4-related disease (n = 15) Sarcoidosis (n = 9) Granulomatosis with polyangiitis (n = 5) Erdheim-Chester Disease (n = 2)
Orbital neoplasm	33 (17.3%)	Orbital lymphoma, MALT (n = 12) Orbital lymphoma, DLBL (n = 6) Metastatic tumor (n = 4) Meningioma (n = 3) Atypical lipomatous tumor (n = 2) Primitive Neuro-ectodermal Tumor (n = 2) Orbital lymphoma, lymphoplasmacytic (n = 1) Plasmacytoma (n = 1) Langerhans cell histiocytosis (n = 1) Squamous cell carcinoma (n = 1)