Background and objective: Focal encephalitis may be associated with br
ain edema, which is often fatal. The control of intracranial pressure
(ICP) is therefore crucial for further therapeutic strategies in space
-occupying edema following encephalitis. However, aggressive treatment
strategies such as hemicraniectomy have not been described in a large
r series of patients. Patients and methods: We describe the clinical c
ourse and outcome in six patients who developed severe brain edema ass
ociated with acute encephalitis. All received maximum medical treatmen
t for elevated ICP, but with signs of brainstem compression emerging,
hemicraniectomy was pet-formed to control ICP. Results: All patients h
ad a very severe encephalitic syndrome and were treated over the cours
e of weeks in the neurocritical care unit (NCCU). However, all patient
s recovered almost completely and showed only mild or no neurologic de
ficit when reexamined after 4 months to 3 years. Conclusion: Hemicrani
ectomy should be considered in patients with severe brain edema follow
ing encephalitis as a potentially lifesaving therapeutic measure. More
over, the initial neurologic deficit seems to have no impact on the lo
ng-term clinical outcome.