An orbital cavernous hemangioma (cavernous venous malformation) in an adult has the following MRI characteristics — EXCEPT:
- A Well-circumscribed lesion within the muscle cone
- B T2 hyperintensity ('light bulb bright')
- C Extension through the superior orbital fissure into the cavernous sinus ✓
- D Progressive filling pattern on dynamic gadolinium enhancement
Correct answer: C. Extension through the superior orbital fissure into the cavernous sinus
Explanation
Orbital cavernous hemangioma (cavernous venous malformation) is the most common benign orbital tumor in adults. On MRI it appears as a well-encapsulated intraconal mass with marked T2 hyperintensity and progressive filling on dynamic gadolinium contrast (patchy to complete enhancement). It does NOT extend through the superior orbital fissure or invade the cavernous sinus — such extension would suggest a more aggressive lesion like schwannoma, lymphoma, or an intracranial tumor with orbital extension.
Reference: Khurana Comprehensive Ophthalmology, 7th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.