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In CSDH the fluid collections at times can be encapsulated by membranes, that is, subdural membranes that tend to play a role in hematoma growth and recurrence. Chronic subdural hematomas (CSDH), a very common entity in neurosurgical practice, at times can be quite difficult to be mange. The presence of a functioning drain for 48-72 h draining the subdural fluid and promoting brain expansion will reduce the subdural space, thus reducing the recurrence of the CSDH. [Extracted from the article]

The article offers information on surgical considerations for Chiari malformation. Topics discussed include information on sringomyelia in the cervical spine that cause progression of the pathophysiological abnormalities in the region of the craniovertebral junction associated the Chiari malformation; complications of Chiari surgery involving cerebrospinal fluid (CSF) leak; and issue related to decrease in the peak CSF velocity at the foramen magnum.

The article discusses the study about the risk factors associated with the volume of hemorrhage in aneurysmal subarachnoid hemorrhage patients. Topics discussed include the categories of the occurrence and severity of vasospasm such as non-modifiable variables and modifiable variables, grading systems to grade the degree of bleed such as Fisher scale and Claassen scale and pre-diastolic blood pressure as prognostic factors associated with hemorrhage.

The author reflects on the use of near-infrared indocyanine green (ICG) video angiography in aneurysm surgery. He says that there have been occasions where the ICG angiography has provided a false sense of security. He emphasizes that such video angiography appears to be promising in the detection of the distal flow and assessment of the completeness of the aneurysm clipping. He stresses its advantages seem to outweigh its limitations.

The author reflects on the role of excisional surgery in brainstem gliomas. By citing the result of a study about the issue, he contends that with the advancement in technology, the role of excisional surgery in gliomas needs to be reviewed. He asserts that in the context of location of the tumors, gliomas should always be considered for a safe excision and meticulous surgical techniques with intraoperative monitoring are important for a better postoperative outcome.

The article reflects on the study concerning the histological spectrum of pediatric brain tumors. It states that the author of the study points out that astrocytomas were the most common tumors among all the centers after the primitive neuroectodermal tumors. Moreover, he mentions that the study is limited in its selective retrospective hospital-based data.