The MOST common primary orbital tumor in adults is:
- A Cavernous hemangioma (venous-lymphatic malformation) ✓
- B Rhabdomyosarcoma
- C Optic nerve glioma
- D Lacrimal gland adenoid cystic carcinoma
Correct answer: A. Cavernous hemangioma (venous-lymphatic malformation)
Explanation
Cavernous hemangioma (now reclassified as venous-lymphatic malformation) is the most common benign primary orbital tumor in adults, typically presenting in the 4th–5th decade with slow, painless, axial proptosis. CT shows a well-defined, encapsulated intraconal mass with progressive enhancement on dynamic CT. Rhabdomyosarcoma is the most common primary orbital malignancy in children. Optic nerve glioma is associated with neurofibromatosis type 1 and occurs in children. Adenoid cystic carcinoma, though the most common malignant lacrimal gland tumor, is less common overall.
Reference: Khurana Comprehensive Ophthalmology, 7th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.