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Spontaneous cerebellar hemorrhage: clinical remarks on 50 cases
1Department of Neurological Sciences, Neurotraumatology, "La Sapienza" University of Rome, Rome, Italy.
Insights
Surgical intervention for spontaneous cerebellar hemorrhage is indicated by specific hematoma dimensions (40x30mm in hemisphere, 35x25mm in vermis) and a low Glasgow Coma Scale score (<13). These criteria aid in determining the need for surgery in patients with cerebellar bleeds.
Area of Science:
- Neurosurgery
- Neurology
- Radiology
Background:
- Spontaneous cerebellar hemorrhage is a recognized neurological condition.
- Surgical indications for cerebellar bleeds are not definitively established.
- The Glasgow Coma Scale (GCS) is a key neurological assessment tool.
Purpose of the Study:
- To establish surgical criteria for spontaneous cerebellar hemorrhage.
- To determine the critical hematoma diameter for surgical intervention.
- To correlate patient neurological status (GCS) with surgical necessity.
Main Methods:
- A retrospective analysis of 50 consecutive patients with cerebellar hemorrhage (1990-1997).
- Evaluation included neurological examination (GCS) and computed tomographic (CT) scans.
- Surgical indications were based on hematoma size, location, posterior fossa crowding, hydrocephalus, and GCS.
Main Results:
- Zero operative mortality and 16% perioperative mortality (24% if including deeply comatose patients).
- Most deaths (7/8) occurred in patients with comorbidities like hypertension and diabetes.
- Specific CT measurements and GCS scores were associated with outcomes.
Conclusions:
- Key surgical criteria include hematoma size (40x30mm cerebellar hemisphere; 35x25mm vermis) on CT.
- A tight posterior fossa and a Glasgow Coma Scale score below 13 are critical indicators for surgery.
- These findings provide a framework for surgical decision-making in cerebellar hemorrhage.
Background:
Only during the past 10 years have spontaneous cerebellar hemorrhages became a well-defined nosological entity. The surgical indication remains debatable. Our primary objective in this study was to set the criteria for undertaking surgery by determining the critical diameter of the hematoma and considering the patients' neurological status (Glasgow Coma Scale).
Methods:
During the 8-year period 1990 through 1997 a series of 50 consecutive patients with spontaneous cerebellar hemorrhage were admitted to the Emergency Neurosurgery Unit, University of Rome "La Sapienza" (Italy). On admission all patients underwent a standard neurological examination, (Glasgow Coma Scale) and a computed tomographic scan. The diameter and the site of the hematoma, a coexisting tight posterior fossa, and the presence of hypertensive hydrocephalus were the criteria, in association with the patients' neurological status, used as indications for surgery.
Results:
Operative mortality was nil; and perioperative mortality eight patients (16%, increasing to 24% including the four patients who were deeply comatose on admission). Most patients who died (seven of eight) had two or more general medical risk factors (arterial hypertension and diabetes mellitus; arterial hypertension and liver disease; or liver disease and hematological disorders).
Conclusion:
In patients presenting with spontaneous cerebellar hemorrhage the essential criteria indicating surgery are a hematoma 40 mm x 30 mm on CT imaging in the cerebellar hemisphere or 35 mm x 25 mm on CT imaging in the vermis, the presence of a tight posterior fossa (critical size reduced by 10 mm), and a Glasgow Coma Score less than 13.