Kernohan notch phenomenon is not associated with-

A. Paralysis contralateral to side of lesion

B. false localising sign

C. Contralateral crus cerebrii compressed by tentorium cerebelli

D. associated transtentorial herniation due to supratentorial mass/lesion

Correct Answer: Paralysis contralateral to side of lesion

Description: Kernohan phenomenon': Also been referred to as 'Kernohan-Woltman notch phenomenon' and is a false localizing sign, causing paralysis to the ipsilateral side of the lesion occuring due to supratentorial lesion causing transtentorial herniation (mainly uncal -green arrow)causing compression of brainstem and indentation of contralateral crus cerebri against the tentorium cerebelli.

Category: Radiology

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