The most common cause of bilateral proptosis in children is:
High-Yield Explanation
The most common cause of bilateral proptosis in children is not definitively established, but metastatic neuroblastoma and/or leukemia should be considered. Common causes of bilateral proptosis in children are congenital skeletal deformities followed by lymphoma, leukemia and other lymphoproliferative disorders. Chloroma is a solid tumor consisting of myeloid leukemic blasts. Of all the options given it is the best answer. Ref: The Massachusetts Eye and Ear Infirmary review manual for Ophthalmology - Page 186; Surgical Atlas of Orbital Diseases - Page 52.