Commonest cause for bilateral proptosis in children is -: (A) Cavernous hamangioma, (B) Chloroma, (C) Fibrous histiocytoma, (D) Rhabdomyosarcoma
Answer is B. Most common cause of bilateral proptosis: In children : Neuroblastoma and leukemia (chloroma). In adults : Thyroid ophthalmopathy. Most common cause of unilateral proptosis: In children : Orbital cellulitis. In adults : Thyroid ophthalmopathy. Ref: A. K. Khurana 6thE pg404