Acute Disseminated Encephalomyelitis with Baló-like Lesion by Scorpion Sting: Case Report.

Acute disseminated encephalomyelitis (ADEM) has been linked to immunizations, viral infections, and occasionally to arthropods stings. Its association with scorpion stings has not been described. A 29-year-old man, who after being stung by a scorpion presented right hemiparesis and language impairment. Brain MRI showed subcortical bihemispheric lesion characteristics of ADEM and a bigger one compatible with Baló concentric sclerosis (BCS). Patient was managed with steroids, showing complete clinical improvement. Magnetic resonance imaging (MRI) after 6 months showed cavitation of the bigger lesion with no new findings. In 2 years of follow-up, there is no clinical relapse or new lesions in MRI. Although cases of ADEM have been reported due to venom of chilopoda and hymenoptera, the scorpion sting can be considered as another new cause; this case being even more relevant due to present a Baló-like lesion in MRI.

Hypertensive thalamic hemorrhage: analysis of short-term outcome.

BACKGROUND: Hypertension is the main cause of intracerebral hemorrhage with a thalamic location frequency that varies from 6% to 26.5%. OBJECTIVE: We aimed to identify clinical and radiological features that could impact the short-term prognosis in patients with hypertensive thalamic hemorrhage (HTH). METHODS: Consecutive patients presenting to a tertiary referral hospital with HTH were analyzed from 2010 to 2014. Clinical features at emergency department and a 30-day outcome using the modified Rankin Scale (mRS) were obtained. RESULTS: A total of 104 patients were studied (53 women, mean age 68.2 years, range 27-91 years), 91 (87.5%) of them with hypertension history. Mean hemorrhage volume was 12.2 mL (range 2-45 mL), without significant differences according to gender or age group. Irruption into the ventricular system occurred in 79 (76%) cases. Thirty-day mortality was 38.5% and occurred with a higher frequency in men, in patients with GCS <8, intraventricular irruption, ventriculostomy, and intracerebral hemorrhage volumes >15 mL. CONCLUSIONS: Although HTH is associated with relatively small hemorrhage volume, it had a higher frequency of ventricular irruption and bad prognosis at short-term.