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
All are the characteristics of raised ICT on a plain radiology except: 
Select and explain. 
A. Erosion of dorsum sellae, B. Ballooning of sella, C. Increased convolutons, D. Sutural diastasis
B: Ballooning of sella
Answer: B: Ballooning of sella 
Explanation: B i.e., Ballooning of dorsal sellae - Sutural diastasis (1st sign in children), increased convolutions (copper beating of skull vault) and thinning & erosion of dorsal sellae (cardinal sign in adults) are features of raised ICT. Expansion & ballooning of sella is seen in pitutary adenomaQ. Expansion & erosion of internal auditory meatus (IAM) is seen in acoustic neuromaQ.