Orbital Pseudotumor is idiopathic inflammatory condition.

• A. Idiopathic inflammatory condition
• B. Malignant neoplasm
• C. Infectious disease
• D. Congenital anomaly

Answer: (A)

Orbital pseudotumor is an idiopathic inflammatory process of the orbit. The term idiopathic means there’s no identifiable infectious, neoplastic, or developmental cause explaining the inflammation. It can affect various orbital tissues—often the extraocular muscles, lacrimal gland, orbital fat, or optic nerve sheath—and presents with painful proptosis, eyelid swelling, and restricted eye movements. This inflammatory, non-neoplastic nature is why it’s classified as an inflammatory condition rather than a malignant tumor, an infectious disease, or a congenital anomaly. It’s typically a diagnosis of exclusion, with imaging and sometimes biopsy used to rule out true tumors or infections, and it usually improves with corticosteroids.