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1 Eyelid retraction, pseudoabducens and upgaze palsy due to a mesodiencephalic hemorrhageThis is a 70-yo-man who suffered a right midline thalamic/rostral midbrain hemorrhagic stroke causing a pretectal (Parinaud's) syndrome. There was prominent eyelid retraction (Collier's sign), a left pseudo-abducens, and upgaze palsy with convergence retraction nystagmus. There was no light-near dis...OMS Mesenecephalon, Convergence Reaction Nystagmus, Upgaze Palsy, Abnormal Range, Sixth Nerve Palsy, Vertical Gaze Palsy, Eyelid Retraction, OMS Dorsal Midbrain
2 Parinaud's syndrome in a man with GBM of the pineal glandThis is a 60-yo-man who presented with diplopia, headaches, and difficulty looking up, and was found to have a mass involving the pineal gland. Biopsy was diagnostic of a GBM. Major features of Parinaud's (dorsal midbrain) syndrome were present including: upgaze palsy, convergence retraction nystagm...Saccades; Convergence; Range; Dorsal midbrain syndrome; Convergence retraction nystagmus; Upgaze palsy
3 Parinaud's syndrome with impaired upward saccades and otherwise normal vertical eye movementsThis is a 50-yo-man who suffered a dorsal midbrain stroke. Exam demonstrated normal vertical range of eye movements, normal vertical VOR and smooth pursuit, but inability to perform upward saccades. Another feature of Parinaud's syndrome seen on his exam was light-near dissociation (not shown in thi...abnormal saccades, range of eye movements, abnormal range of eye movements, smooth pursuit, normal VOR, Dorsal midbrain syndrome
4 Two patients with Parinaud's syndrome with slow upward saccades and normal upward range of movementsPresented here are two patients with Parinaud's syndrome: Patient 1) suffered a hemorrhage of the dorsal midbrain causing slow upward saccades (with convergence retraction nystagmus, but normal vertical range of eye movements), and light-near dissociation, and Patient 2) had a germinoma of the dorsa...Abnormal Saccades, Dorsal Midbrain, Jerk Nystagmus, Gaze Evoked Nystagmus
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