Neurologic examination reveals bilateral medial rectus paresis on attempted lateral gaze, monocular horizontal nystagmus in the abducting eye, and unimpaired convergence. The lesion is in the:
Correct Answer: Midpontine tegmentum, dorsomedial zones, bilateral.
Description: Pt is having B/L internuclear Ophthalmoplegia (BINO) d/t involvement of B/L Medial longitudinal fasiculus (MLF), which is located in the dorsomedial midpontine tegmentum. It connects the cranial nerve nuclei III, IV and VI and integrates movements directed by the gaze centers and information about head movement. MLF syndrome is frequently seen in multiple sclerosis and less often in vascular lesions.
Category:
Anatomy
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now