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[Edematous cerebellar infarction. A clinico-pathological study of 16 cases]
1Laboratoire de Neuropathologie Raymond Escourolle, Formation Associée de L'Association Claude Bernard, Hôpital de la Salpêtrière, Paris.
Insights
Cardiac embolism frequently causes cerebellar infarction, leading to brain stem compression. Massive brain stem infarcts, not just cerebellar swelling, are linked to severe neurological deficits like coma and paralysis.
Area of Science:
- Neurology
- Pathology
Context:
- Post-mortem study of sixteen cases with cerebellar infarction, brain stem compression, and tonsillar herniation.
- Cardiac embolism identified as the primary cause in 75% of cases.
Purpose:
- To investigate the relationship between cerebellar infarction, brain stem compression, and associated neurological deficits.
- To differentiate between cerebellar swelling and associated brain stem infarcts in clinical presentation.
Summary:
- Cerebellar infarction, often embolic, can cause brain stem compression and tonsillar herniation.
- Infarction in superior or multiple cerebellar artery territories, including the posterior inferior cerebellar artery, was observed.
- Associated paramedian brain stem infarcts, particularly pontine, correlate with severe motor deficits and coma, distinguishing them from isolated cerebellar infarcts.
Impact:
- Findings suggest that severe neurological deficits in cerebellar infarction cases may indicate concurrent massive pontine infarction rather than solely brain stem compression.
- This distinction is crucial for considering surgical interventions in managing complex cerebellar infarction cases.
Abstract:
Sixteen cases of cerebellar infarction with brain stem compression and tonsillar herniation were studied post-mortem. None was operated. Cardiac embolism was the most common cause (75% of the cases). Infarction involved the superior cerebellar artery territory in 8 cases, and multiple cerebellar artery territories (including in each case the posterior inferior cerebellar artery territory) in 8 cases. It involved the cerebellum only in 10 cases. In the 6 other cases, it was associated with an infarct in the paramedian territory of the brain stem. The oedematous swelling was linked to the large size, the rostral site and the embolic causes of the infarct. Cases with massive infarction of the brain stem differed from others by severe motor weakness of the limbs in 5 cases and a deep coma in the 6th. On the contrary, only one of the 10 cases with lone cerebellar infarct had a mild hemiparesis. Thus, when a hemi- or tetraplegia occurred in the course of an oedematous cerebellar infarction, an associated massive paramedian infarction of the pons must be suspected rather than a brain stem compression. This can be taken into account when a surgical treatment is discussed.