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: ENT
Picket fence fever is a feature of - 
Select and explain. 
A. Acute mastoiditis, B. Lateral sinus thrombophlebitis, C. Bell's Palsy, D. Atticoantral CSOM
B: Lateral sinus thrombophlebitis
Answer: B: Lateral sinus thrombophlebitis 
Explanation: Ans. B. Lateral sinus thrombophlebitis Ref: Dhingra Sth/e p. 95] Hectic Picket-Fence fi:pe of fever with rigor,