[Analysis of intracranial saccular aneurysm wall: neuroimaging and histopathological correlates].

Background: Contrast enhancement of intracranial aneurysm wall during MRI with targeted visualization of vascular wall correlates with previous aneurysm rupture and, according to some data, may be a predictor of further rupture of unruptured aneurysms.

Objective: To analyze possible causes of aneurysm contrast enhancement considering morphological data of aneurysm walls.

Material And Methods: The study included 44 patients with intracranial aneurysms who underwent preoperative MRI between November 2020 and September 2022.

[Venous cerebral complications after microsurgery for complex aneurysms of the middle cerebral arteries].

Unlabelled: Microsurgeries are common for complex aneurysms of the middle cerebral artery (MCA).

Objective: To evaluate the incidence and types of venous cerebral disorders after microsurgeries for complex MCA aneurysms.

Material And Methods: A retrospective study included 285 patients with complex MCA aneurysms between 2009 and 2020.

[Comparison of polymethyl methacrylate skull implant fixation by three types of titanium fasteners].

Objective: To evaluate mechanical strength of three methods of polymethyl methacrylate skull implant fixation in two experimental models.

Material And Methods: The first experiment was performed on a plastic model that was as close as possible to bone in structural characteristics. The second experiment was performed on a biological specimen (a ram's head).

[Russian study on brain aneurysm surgery: a continuation (RIHA II)].

Objective: To assess the main performance indicators of neurosurgical departments in surgical treatment of cerebral aneurysms in the Russian Federation.

Material And Methods: We analyzed 22 neurosurgical departments (19 regional and 3 federal hospitals) in 2017 and 2021. The study enrolled 6.

Surgical treatment of intracranial aneurysms in acute period of hemorrhage in Hunt-Hess grade IV-V patients at Burdenko Neurosurgical Center between 2006 and 2020.

Background: Management of patients in acute period of aneurysmal subarachnoid hemorrhage HuntHess grade IV-V is still a complex and unsolved problem, especially regarding surgical treatment and various complications.

Objective: To analyze postoperative outcomes in patients undergoing surgery in acute period of aneurysmal subarachnoid hemorrhage HuntHess grade IV-V between 2006 and 2020, as well as to assess various factors influencing treatment outcomes.

Material And Methods: We analyzed 163 patients who underwent surgery within 21 days after aneurysmal subarachnoid hemorrhage HuntHess grade IV-V.

Magnetic resonance imaging of saccular intracranial aneurysm wall.

Background: Hemorrhage from intracranial aneurysms is associated with high risk of adverse outcomes. In this regard, surgical treatment of unruptured asymptomatic aneurysms has been actively developed in recent decades. One of the objectives is searching for predictors of aneurysm rupture to clarify the indications for surgery.

Microsurgical and endovascular treatment of residual and recurrent cerebral aneurysms.

Cerebral aneurysms are characterized by high risk of adverse outcome due to severe intracranial hemorrhages and their consequences. Aneurysm remnants after incomplete exclusion can cause hemorrhage. Filling of these fragments immediately after surgery is usually defined as residual aneurysms.

Spontaneous dural CSF fistula as a cause of intracranial hypotension syndrome. Case report and literature review.

Typical symptoms of spontaneous intracranial hypotension syndrome are severe headache, weakness, dizziness and inability to stay upright for a long time. Most often, this syndrome occurs due to CSF fistula in spinal space. Pathophysiology and diagnosis of this disease are poorly known for neurologists and neurosurgeons that can complicate timely surgical care.

Screening of patients with cerebral aneurysms: mathematical analysis and economic justification.

Unlabelled: Subarachnoid hemorrhages due to rupture of cerebral aneurysms have a high risk of disability and mortality. Screening of the population to detect aneurysms in patients with risk factors is currently not carried out in Russia. However, the detection of clinically silent aneurysms and their subsequent prophylactic surgical treatment are justified, according to numerous studies.

[Thrombectomy without temporary clipping for giant partially thrombosed saccular aneurysms].

Unlabelled: Cerebral aneurysm thrombosis is one of the factors increasing the risk of microsurgical treatment. Thrombi and calcifications within the aneurysm neck prevent adequate clipping and should be removed before the procedure. At the same time, the process of thrombectomy is difficult and time consuming that increases duration of temporary arterial clipping and risk of cerebral ischemia.

[Intravascular hypothermia for cerebral ischemia after microsurgical clipping of complex MCA aneurysms].

Unlabelled: Hypothermia for neuroprotection and correction of intracranial hypertension was described in both experimental and clinical studies. Effectiveness of hypothermia for improvement of functional outcomes in neurosurgical patients is still unclear despite the previous randomized trials. In available national and foreign literature, we found no trials devoted to hypothermia in patients with ischemia after surgical treatment of complex aneurysms of the middle cerebral artery (MCA).

[Features of modeling a polymer implant for closing a defect after decompressive craniotomy].

Background: Individual polymer implants are widespread for bone reconstruction after decompressive craniectomy. Despite the availability of customized titanium products, various specialists and hospitals prefer polymer implants.

Objective: To compare the methods of modeling and manufacturing the polymethylmethacrylate implants and identify the features affecting the quality of reconstruction.

[Unruptured asymptomatic brain aneurysms: modern approaches to the choice of surgical method and treatment outcomes].

Background: In recent years, significant attention has been paid to preventive vascular neurosurgery. Treatment of unruptured asymptomatic brain aneurysms is one of the sections of this surgery.

Objective: To evaluate treatment outcomes in patients with unruptured asymptomatic brain aneurysms who underwent treatment chosen on the basis of criteria adopted at the Burdenko Neurosurgery Center.

[Surgical treatment of vertebral artery confluence aneurysms].

Background: Aneurysms of vertebral artery confluence and proximal parts of basilar artery are extremely rare. They are usually combined with proximal fenestration of basilar artery. No timely surgical treatment of these aneurysms is associated with high risk of adverse outcomes, and their treatment is a challenge for neurosurgeons.

[Yu.M. Filatov (by the 90th anniversary)].

May 7, 2021 was the 90 anniversary of the birth of an outstanding Russian neurosurgeon, corresponding member of Russian Academy of Sciences, Laureate of the State Prize of USSR, Professor Yury Mikhailovich Filatov.

[Combination of pituitary adenomas and intracranial aneurysms].

The combination of intracranial tumors and asymptomatic brain aneurysms is an urgent problem, since it can significantly affect surgical intervention. Aneurysms are common in patients with meningioma, glioma and pituitary adenoma. According to certain authors, combination of aneurysms with pituitary adenomas is 7 times more common than with other tumors.

[Completeness of brain aneurysm exclusion according to CT angiography].

Objective: To develop a classification of the completeness of brain aneurysm exclusion according to CT angiography for determining further diagnostic and curative strategy.

Material And Methods: The study included 138 patients who had 164 brain aneurysms. Clipping was carried out at the Burdenko Neurosurgery Center in 2013-2017.

[Microsurgical resection of multiple unruptured cerebral AVMs. Case report and literature review].

Multiple brain arteriovenous malformations (AVMs) are extremely rare. We report a 26-year-old patient with paroxysmal symptoms. This was the first case in our center over 10 years (0.

[Arteriovenous malformations of the brain in children: treatment results for 376 patients].

Undefined: Cerebral arteriovenous malformations (AVM) are increasingly detected in children.

Objective: To estimate the risk of hemorrhage in children with AVM before and after treatment and evaluate the outcomes of various methods of AVM management in children.

Material And Methods: This study included 376 patients with various cerebral AVM under the age of 18 years.

[Successful combination treatment of giant bicameral fusiform partially thrombosed vertebral artery aneurysm at 12-year-old patient (practical case and literature review)].

Giant cerebral aneurysms are diagnosed more often in children than in adults. Treatment of giant aneurysms is carried out both by endovascular and microsurgical methods. Literature information on combination of microsurgical and endovascular operations of cerebral aneurysms at children is little.

[Surgical treatment of patients with cerebral aneurysms in the acute stage of rupture: dynamics of results during 2006-2018].

Unlabelled: Treatment of cerebral aneurysms in the acute stage of subarachnoid hemorrhage (SRH) especially on the background of cerebral vasospasm continues to be a difficult task.

Objective: Assessment of dynamics of the surgical treatment results of patients with cerebral aneurysms in acute period of SRH.

Material And Methods: A comparative analysis of the results of patients' surgical treatment in NMRCN Burdenko about aneurysm in 1-21 days after hemorrhage was made.

[Giant thrombosed aneurysm of the pericallosal artery: clinical observation, literature review].

Unlabelled: Are characterized by Distal giant aneurysms of the anterior cerebral artery are an extremely rare pathology. There are less than 40 cases of this disease described in literature.

Objective: The aim of the article is to present the clinical observation of a successfully treated giant aneurysm of the pericallosal artery in a 58-year-old man, and also analyze the publications on distal cerebral aneurysms.

[Individual preoperative 3D modeling of vascular brain pathology].

The possibility of segmenting three-dimensional objects by DICOM-series is well known and available both on specialized workstations and on personal computers. The technique, however, is relatively rarely used in clinical practice, and we believe that the benefits of preoperative preparation using segmented 3D models are underestimated. The article is devoted to our experience in using segmentation of anatomical structures based on CT and MRI for preoperative preparation for surgical operations performed in neurosurgical departments on patients with vascular pathology.

[Intracisternal administration of verapamil for the prevention and treatment of vasospasm in patients after microsurgical treatment of cerebral aneurysms in the acute period of hemorrhage].

Unlabelled: The first results of intracisternal administration of verapamil for the prevention and treatment of cerebral vasospasm (CVS) in patients in the acute period of subarachnoid hemorrhage (SAH) after microsurgical clipping of cerebral aneurysms are presented.

Objective: Safety assessment of the method of prolonged intracisternal infusion (PII) of verapamil.

Material And Methods: Over the period from May 2017 to December 2018, 42 patients were included in the study, who underwent clipping of aneurysm of the anterior segments of the Willis circle.

[Microsurgical treatment of aneurysms of vertebral and posterior-lower cerebellar arteries: surgical approaches, exclusion options, treatment results].

Unlabelled: Aneurysms of vertebral (VA) and posterior inferior cerebellar arteries (PICA) are relatively rare pathologies and account for 3.4% of the total number of intracranial aneurysms.

Material And Methods: The experience of microsurgical treatment of 67 patients with VA and PICA aneurysms in N.