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Abstract Details

Isolated Infratentorial PRES; An Atypical Presentation of a Common Neurological Disorder.
Cerebrovascular Disease and Interventional Neurology
P11 - Poster Session 11 (8:00 AM-9:00 AM)
4-013
To present a case of an atypical variant of PRES.

30-year-old female with past medical history of hypertension and migraines presented with bilateral fronto-occipital headache, slurred speech and left arm numbness for one day. Vitals signs were remarkable for blood pressure of 225/117. MRI brain showed diffusion restriction of the midbrain and pons with contrast enhancement and significant vasogenic edema. Cerebral angiogram and lumbar puncture were unremarkable. Over the next two days patient had worsening left sided weakness in addition to new dysmetria in the left upper extremity. Repeat MRI brain showed expansion of pontine lesion with involvement of inferior cerebellar peduncle and the upper medulla along-with hemorrhage in the pons. Patient was empirically started on antibiotics to cover for listeria, HSV and nocardia. Cervical lumbar puncture was performed which was negative for autoimmune, neoplastic and infectious etiology. Patient also underwent plasma exchange for 3 days with mild improvement. Patient refractory hypertension was controlled with four anti-hypertensive medications after which there was arrest in patient decline. Repeat MRI brain showed stable changes in the midbrain, pons, medulla and the cerebellar peduncles. Antibiotics were discontinued and patient was discharged to acute rehabilitation facility with mRS of 4.

N/A
Patient seen in clinic with significantly improved physical examination and mRS of 2. Repeat MRI brain 3 months after symptom onset with resolution of edema, chronic ischemic strokes with no contrast enhancement.
Isolated infratentorial PRES should be considered in the differential diagnosis of a patient with rapid clinical and radiologic decline. Cases reported in literature have shown patients to have significantly elevated blood pressures compared to classical PRES which is consistent with our case. However, prior reports have shown male predominance (70%) and renal impairment (51%). Prompt recognition and early blood pressure control can result in better long-term outcomes in isolated infratentorial PRES.
Authors/Disclosures
Muhammad Waleed Zeb, MD, MBBS (UIH Neurology)
PRESENTER
No disclosure on file
No disclosure on file