Extradural Hematoma Following Decompressive Craniectomy for Acute Subdural Hematoma: Two Case Reports Illustrating Different Mechanisms.

The occurrence of extradural hematoma (EDH) after decompressive craniectomy (DC) for traumatic brain injury is uncommon. We report two cases, one developing ipsilateral EDH and another developing contralateral simultaneous EDH and subdural hematoma after DC. The strategies to anticipate the occurrence of such concurrent hematomas (CH) are highlighted. We propose a subclassification of CH into "immediate" and "delayed," based on their difference in clinical presentation, image findings, pathogenesis, and surgical management.

Spontaneous Ventriculostomy into the Subdural Space in a Neonate with Congenital Hydrocephalus.

We report a case of spontaneous temporary resolution of congenital hydrocephalus due to drainage into the subdural space, which is not a physiological space for cerebrospinal fluid (CSF). This is the first report of spontaneous drainage of CSF into the subdural space, and we term it "ventriculosubdurostomy." We highlight the fact that spontaneous resolution of hydrocephalus due to drainage into a nonphysiological CSF space is temporary.

Complex congenital atlantoaxial dislocation in an infant: case report.

The authors report the case of congenital atlantoaxial dislocation in a 9-month-old female infant, who presented with progressive quadriparesis and respiratory failure. The problems in management due to such an early age of presentation, including atypical clinical presentation, unique radiological findings, limited management options, and variable clinical outcomes discussed. This is the youngest case of non-syndromic congenital atlantoaxial dislocation, reported to date, and is a unique combination of lateral, rotatory, and antero-posterior atlantoaxial dislocation.

Spontaneous evacuation of hyperacute extradural hematoma: two illustrative case reports.

Spontaneous drainage of extradural hematoma (EDH) through a skull fracture is rare, with only 14 cases reported to date. Five of these belong to pediatric age group. The authors report two cases of spontaneous evacuation of acute EDH, in children, with two differing types of skull fractures, one being an elevated fracture. The context, in which the terminologies of "spontaneous evacuation" and "spontaneous resolution" to be used, is clarified.