[Postoperative bed header position after burr-hole drainage of chronic subdural haematoma: systematic review and meta-analysis of randomised controlled trials].

Introduction: Several studies have suggested the possible influence of postoperative bed header position on the risk of symptomatic recurrences and medical complications in patients who have been intervened due chronic subdural haematomas. Nevertheless, this hypothesis has not been assessed by a meta-analysis.

Methods: All randomised controlled trials analysing symptomatic recurrence rates in patients who underwent burr-hole drainage of chronic subdural haematomas, describing postoperative bed header positioning, were included.

[The influence of climate on the onset of intracranial hemorrhages].

Background: there are not studies exploring the potential role of weather conditions in the incidence of intracranial hemorrhages in Latin America.

Methods: a descriptive study was carried out in an emergency room from Cartagena de Indias (Colombia). Data for all adult patients with intracranial hemorrhage and meteorological variables of the days when intracranial hemorrhages occurred were recorded and compared to with those where not a single case.

[Dural metastasis as the first manifestation of prostate cancer].

Metastases of prostate cancer to intracranial meninges are rare and often confused with meningiomas or chronic subdural hematomas. These usually occur in patients with a known cancer diagnosis in advanced stages of the disease, and only in some rare cases do its manifestations precede the detection of the primary tumour. The clinical presentation is unspecific.

[Intracerebral hemorrhages following drainage of chronic subdural hematomas].

Background: postoperative intracerebral hemorrhage after drainage of chronic subdural hematoma is a rarely reported complication; however, its incidence, according to different series may be underestimated.

Case Report: this report presents a 77 year old male patient who, after the drainage of bilateral chronic subdural hematomas, developed an extensive hemorrhage in the thalami, basal ganglia, midbrain and pons, with extension into the ventricles and obstructive hydrocephalus.

Conclusions: compression by extra-axial collection decreases cerebral blood flow on the affected hemisphere and alters its vascular self-adjustment.

[Chiari type I malformation in a patient with Poland's syndrome].

Chiari malformation type I and Poland's syndrome are two rare diseases and their simultaneous presentation had not been previously described in the literature. We report the case of a 27 year old male with history of Poland's syndrome, who referred headache and motor impairment of the intrinsic muscles of the left hand. In a cervical spine MR a Chiari I malformation with syringomyelia from C1 to T2 was found, which was treated by foramen magnum decompression, dural plasty and removal of the posterior arch of the atlas.

[Brain stem compression preceded by trigeminal neuralgia in a patient with vertebro-basilar and bilateral carotid dolichoectasia].

We described a patient who had left trigeminal neuralgia by vertebro-basilar dolichoectasia, who underwent microvascular decompression separating the basilar artery of the trigeminal nerve by interposing a vascular graft piece. Symptoms resolved completely after surgery. Nine years later, he has a recurrence of facial pain associated with rapidly progressive brainstem compressive symptoms.