A 48-year-old male with diabetes mellitus (poorly controlled) presents with left eye swelling, progressive vision loss, and proptosis for 22 days. What is the most likely diagnosis?
- Idiopathic orbital inflammation
- Orbital Mucormycosis
- Orbital Lymphoma
- IgG4-related disease
Answer

Dr. Shayan Sirat M. Anwar | Aga Khan University Hospital, Karachi