This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology
Cause of asymmetrical enlargement of orbit 
Select and explain. 
A. Optic nerve glioma, B. Retinoblastoma, C. Neurofibroma, D. Lacrimal gland tumour
D: Lacrimal gland tumour
Answer: D: Lacrimal gland tumour 
Explanation: Asymmetrical enlargement of orbit 

Rhabdomyosarcoma
Dermoidcyst
Lacrimal gland tumour.