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: Pediatrics
Childhood malignancy producing proptosis is/are : 
Select and explain. 
A. Neuroblastoma, B. Retinoblastoma, C. Nephroblastoma, D. All of these
D: All of these
Answer: D: All of these 
Explanation: Childhood tumors producing proptosis are :
a) Retinoblastoma.
b) Rhabdomyosarcoma.
c) Lymphoma & lymphosarcoma.
d) Secondaries from neuroblastoma, nephroblastoma, Ewing's sarcoma, & leukaemic infiltration.