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: Radiology
Investigation which should not be done in a patient with brain tumor: 
Select and explain. 
A. CT Scan, B. Lumber Puncture, C. MRI, D. X - Ray
B: Lumber Puncture
Answer: B: Lumber Puncture 
Explanation: B i.e. Lumber puncture Raised ICT (example in Brain Tumor) is an absolute contraindication for L.P. as there is risk of brain herniation & sudden death.Q