[Features of modeling a polymer implant for closing a defect after decompressive craniotomy]. / Osobennosti modelirovaniya, izgotovleniya i ustanovki polimernykh implantatov dlya zakrytiya defekta cherepa posle dekompressivnoi trepanatsii.

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. MATERIAL AND METHODS: We analyzed 14 patients with extensive skull defects after installation of polymethyl methacrylate implants. Software used for modeling of individual implants by different specialists was compared. RESULTS: Satisfactory reconstruction result was obtained in all cases. There were no infectious complications. The authors outlined certain important aspects for modeling of individual polymer products: local use of anatomical thickness of the implant, leaving safe spaces, prevention of temporal retraction, template-based resection before reconstruction. CONCLUSION: To date, skull defect closure with polymeric materials remains relevant, and even has certain advantages over customized titanium products.

[Combination of pituitary adenomas and intracranial aneurysms]. / Sochetanie adenom gipofiza i intrakranial'nykh anevrizm.

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. In these cases, a comprehensive examination of the patient and decision-making on surgical strategy are required. This review is devoted to epidemiology, diagnosis and treatment of patients with a combination of pituitary adenomas and intracranial aneurysms detected intraoperatively or at the preoperative stage. The manuscript is illustrated by cases observed at the Burdenko Neurosurgery Center.

Intra-arterial Administration of Verapamil for the Prevention and Treatment of Cerebral Angiospasm.

From 2013 to 2017, at the Burdenko Institute of Neurosurgery, intra-arterial verapamil for treatment of cerebral vasospasm following intracranial hemorrhage after aneurysm rupture was administered to 35 patients (total 75 procedures). The age is from 8 to 77 years. All ruptured aneurysms were treated: in 26 cases with open approach-clipping-and in 9 cases with endovascular occlusion. The procedure was carried out from 0 to 11 days after the operation. Severity of spasm was assessed by angiography and TCDU. Efficacy of the administration was assessed by TCDU 1 h after the procedure and by clinical evaluation of the patient's condition. The dose of verapamil was 15-50 mg (on average 40 mg) per procedure/per carotid pool and depended on the data of TCDU and clinical and radiological picture. The procedure was performed repeatedly (1-5 times) according to the indications and depending on the patient's condition, with an interval of 24 h. The procedure was effective as a preventive measure for care of patients in the initial stage of cerebral ischemia and was ineffective with a formed focus of ischemia. Endovascular administration of verapamil for treatment of cerebral vasospasm is a safe technique which positively affects the overall recovery of such patients.

[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]. / Intratsisternal'noe vvedenie verapamila dlia profilaktiki i lecheniia vazospazma u bol'nykh posle mikrokhirurgicheskogo lecheniia anevrizm sosudov golovnogo mozga v ostrom periode krovoizliianiia.

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. Most patients (78.6%) were operated during the first 6 days after SAH. For each patient, a thin silicone catheter was installed, through which verapamil was infused. A prerequisite was the installation of external ventricular drainage and opening of the lamina terminalis. The daily dosage of verapamil varied from 25 to 50 mg of the drug diluted in 200-400 ml of isotonic sodium chloride solution. The indication for the use of the PII method was the presence of one of the following factors: a score on the Hunt-Hess scale from III to V, 3 or 4 points on the Fisher scale, confirmed angiographically by the CVS before the operation. RESULTS: The PII procedure was performed from 2 to 5 days. The average dose of verapamil was 143.5±41.2 mg additionally, in the presence of an angiographically confirmed CVS accompanied by clinical manifestations, 14 (33.4%) patients received intra-arterial injection of verapamil in several stages, with individual selection of the drug dose. The formation of new cerebral ischemic foci of vasospastic genesis was observed in only 1 (2.4%) patient. No infectious intracranial complications were noted. The average follow-up period was 297.6±156.1 days. Long-term treatment outcomes, assessed by a modified Rankin scale from 0 to 2 points, were observed in 83.3% of patients. There were no outcomes such as vegetative status and no deaths. The frequency of liquorodynamic disorders, as well as epileptic syndrome did not exceed that among patients with SAH according to the literature. CONCLUSION: The study has confirmed the safety of prolonged PII. The efficacy of the method, compared with other methods for CVS treatment requires further investigation. The first results look quite promising: the observation shows a low percentage of new foci of cerebral ischemia and the absence of deaths associated with it. In patients with severe CVS, the efficacy of the PII method is increased when combined with intra-arterial administration of verapamil.

[Principles of surgical treatment for patients with asymptomatic aneurysms and cerebral aneurysms in the cold period after spontaneous intracranial hemorrhages]. / Printsipy vybora metoda khirurgicheskogo lecheniia bol'nykh s bessimptomnymi anevrizmami i anevrizmami golovnogo mozga v kholodnom periode posle spontannykh vnutricherepnykh krovoizliianii.

Surgical treatment of patients with cerebral aneurysms still remains one of the most important issues of cerebrovascular neurosurgery, which is associated with both complexity of treatment and risks posed by the disease. The purpose of this publication is to discuss the recommendations and algorithms adopted at the Neurosurgical Institute for choosing surgical treatment of patients with single and multiple intracranial aneurysms based on the clinical course of disease and anatomical morphological classifications of aneurysms. The study was based on a large clinical material: we analyzed treatment outcomes in 1,621 patients (2009-2017); of these, 966 (59.5%) patients were operated on using microsurgical techniques, and 655 (40.4%) patients underwent endovascular surgery. Surgical treatment of patients with cerebral aneurysms has been performed in close cooperation between two vascular (microsurgical and endovasal) departments, using the latest technical innovations.

[Intra-arterial administration of verapamil for prevention and treatment of cerebral angiospasm after SAH due to cerebral aneurysm rupture]. / Intraarterial'noe vvedenie verapamila dlia profilaktiki i lecheniia tserebral'nogo angiospazma posle SAK vsledstvie razryva anevrizm sosudov golovnogo mozga.

AIM: The study purpose was to analyze the efficacy of intra-arterial administration of verapamil (IAV) in the treatment of angiospasm in SAH patients and to determine optimal parameters of the procedure. A number of studies demonstrated the efficacy of intra-arterial administration of vasodilators, in particular verapamil, in the treatment of angiospasm after aneurysmal SAH, which served the basis for inclusion of this method in the recommended protocol for treatment of SAH patients [1-7]. MATERIAL AND METHODS: We analyzed the efficacy of IAV in 35 patients in the acute period of SAH, with 77.2% of the patients having a Hunt-Hess score of III-V. The inclusion criteria were as follows: IAV within two weeks after SAH; excluded aneurysm; verapamil dose per administration of at least 15 mg; follow-up for at least three months. Efficacy endpoints were as follows: changes in spasm according to angiography and transcranial dopplerography (TCDG); development of ischemic lesions; clinical outcome according to the modified Rankin scale. RESULTS: A total of 76 IAV procedures were performed. The verapamil dose per procedure was 36.7±9.7 mg, on average; the number of procedures varied from 1 to 5. One arterial territory was treated in 12 cases, two arterial territories were treated in 48 cases, and three arterial territories were treated in 15 cases. Typical adverse reactions included decreased blood pressure, a reduced heart rate, and elevated ICP. In all cases, TCDG revealed signs of reduced angiospasm - a 20-40% decrease in the LBFV in the M1 MCA. Four (11.4%) patients died; of these, only one died due to angiospasm progression. On examination at 3 months or more after discharge, favorable outcomes were observed in 74.3% of cases. CONCLUSION: IAV is associated with a low risk of significant complications. IAV should be performed under control of systemic hemodynamics and ICP. The indications for IAV include signs of moderate worsening or severe angiospasm according to TCDG and/or angiography. The IAV procedure may be performed every day. Further clarification of the IAV procedure and evaluation of clinical outcomes under prospective study conditions are required.

[Proximal clipping of a large fusiform aneurysm of the A2 segment of the left anterior cerebral artery with awakening of the patient (a case report and literature review)]. / Proksimal'noe klipirovanie bol'shoi fuziformnoi anevrizmy A2 segmenta levoi perednei mozgovoi arterii s probuzhdeniem bol'noi (sluchai iz praktiki i obzor literatury).

Arterial aneurysms of the A2 segment are very rare (<1%) peripheral aneurysms of the anterior cerebral artery (ACA) territory. Usually, these are saccular aneurysms; there are single reports of fusiform aneurysms of this location. Surgical treatment of these aneurysms involves both microsurgical and endovascular interventions. In the presented case, we used deconstructive surgery (proximal clipping of the aneurysm) with intraoperative awakening of the patient, which verified sufficient collateral blood flow. In the case of focal deficit development, we planned to simultaneously perform an interarterial anastomosis between the A3 segments of the right and left ACAs.

[Immediate outcomes of microsurgical treatment of cerebral arteriovenous malformations in non-hemorrhagic patients]. / Blizhaishie rezul'taty mikrokhirurgicheskogo lecheniia arterio-venoznykh mal'formatsii golovnogo mozga u patsientov bez krovoizliianiia.

Arteriovenous malformations (AVMs) are some of the most frequent congenital abnormalities of the cerebral vascular system and usually occur at a young age. Given the fact that AVMs can manifest, in addition to hemorrhages, as symptomatic epilepsy (17-40%) that occurs more often at a young age and may lead to significant disability, investigation of this pathology remains topical. Particular attention has recently been paid to the management of AVM patients without clinical signs of hemorrhage at the time of pathology diagnosis. OBJECTIVE: The objective of this study was to optimize the management of patients with unruptured AVMs based on analysis of the immediate outcomes of microsurgical treatment. MATERIAL AND METHODS: We retrospectively analyzed the immediate outcomes of microsurgical treatment of AVM patients hospitalized to the Burdenko Neurosurgical Institute in the period from 2009 to 2017. The patients included in the study met the following criteria: age over 18 years; microsurgical resection of AVM. The main exclusion criterion was a hemorrhage history confirmed by clinical data or verified by a neuroimaging study (MRI/CT). The study included 160 patients (58.1% males and 41.9% females) aged 18 to 67 years (mean, 33.5 years). According to the clinical course, patients with epileptic syndrome prevailed: 99 (61.9%) cases. Headaches occurred in 49 (30.6%) patients; 8 (5%) patients had asymptomatic AVMs; 4 (2.5%) patients had ischemic stroke. The surgical risk was assessed by using the Spetzler-Martin (S-M) scale: Grade I - 18 (11.3%) patients, Grade II - 71 (44.4%) patients, Grade III - 60 (37.5%) patients, and Grade IV - 11 (6.8%) patients. Direct surgery in patients with AVMs classified as S-M V was not planned. RESULTS: Postoperative analysis revealed that 33 patients included in the study group in accordance with the above criteria had silent AVM hemorrhage that was confirmed only based on the intraoperative picture. The best surgical treatment outcomes were observed in patients with S-M I and II AVMs. The outcome scored 4 and 5 on the Glasgow Outcome Scale (GOS) was in 100% of cases in the S-M I group, 98.6% in the S-M II group, 86.7% in the S-M III group, and 81.8% in the S-M IV group. The relatively good outcomes of S-M IV AVM resection are explained by careful selection of patients for surgery. In general, good postoperative outcomes (GOS score of 4 and 5) were in 93.2% of patients. The main newly developed postoperative symptoms were visual impairments - visual field defects (64.7% of all complications). Postoperative mortality was 1.3%. CONCLUSION: Surgical treatment is indicated for patients with unruptured AVMs and S-M I or II surgical risk, regardless of clinical manifestations. In other cases, the treatment approach depends on a number of risk factors.

[On the classification of large and giant paraclinoid internal carotid artery aneurysms]. / K voprosu o klassifikatsii bol'shikh i gigantskikh paraklinoidnykh anevrizm vnutrennikh sonnykh arterii.

Large and giant intradural ICA aneurysms or the so-called paraclinoid aneurysms are a surgical challenge requiring high qualification of the neurosurgeon. Despite numerous publications on this topic, there is still no generally accepted classification of paraclinoid aneurysms. In this paper, we analyzed the definitions and classifications of paraclinoid aneurysms, which were available in the medical literature. The paper presents our own surgical classification of paraclinoid ICA aneurysms, which has been developed by Prof. Sh.Sh. Eliava and co-authors at the Burdenko Neurosurgical Institute. The classification is based on the aneurysm neck position relative to the ICA wall, aneurysm dome direction, and type of aneurysm clipping.

[The history of surgery for brain and spinal cord vascular pathology at the Burdenko Neurosurgical Institute (to the 50th anniversary of foundation of the First Neurovascular Department)]. / Istoriya khirurgii sosudistoi patologii golovnogo i spinnogo mozga v Institute neirokhirurgii im. akad. N.N. Burdenko (k 50-letiyu osnovaniya pervogo neirososudistogo otdeleniya).

The Vascular Department of the Burdenko Neurosurgical Institute is one of the country's first dedicated departments engaged in treatment of patients with cerebrovascular diseases. The modern vascular service of the Institute is represented by several departments and groups: the Department of Microsurgical Treatment of Vascular Diseases, a group of Reconstructive Brachiocephalic Surgery, and the Department of Endovascular Surgery and Neurodiagnosis that is also engaged in intra-arterial chemotherapy and angiographic diagnosis. The neurovascular service of the Institute is a rightful leader of Russia in the number operations and their complexity: patients with the most serious and unusual pathologies are referred to the Institute from across the country. The achievements of the service are based on science and clinical practice that underlie progressive improvement in the diagnosis, surgical methodology, and recovery of neurovascular patients. On November 02, 2016, the Vascular Department of the Burdenko Neurosurgical Institute will celebrate the 50th anniversary of its foundation.

[The principles for choosing a surgical technique for patients with acute cerebral aneurysm rupture]. / Printsipy vybora metoda khirurgicheskogo lecheniya bol'nykh v ostrom periode razryva tserebral'nykh anevrizm.

The article describes the principles for choosing a surgical technique for patients with cerebral aneurysms in acute subarachnoid hemorrhage. The principles were developed based on the experience gained at the Burdenko Neurosurgical Institute. Microsurgical and endovascular treatment options are considered.

[The modern role of microsurgery in treatment of large and giant aneurysms of the internal carotid artery]. / Sovremennaya rol' mikrokhirurgii v lechenii krupnykh i gigantskikh anevrizm vnutrennei sonnoi arterii.

INTRODUCTION: Large (1.5-2.5 cm) and giant (>2.5 cm in diameter) aneurysms of the internal carotid artery (ICA) remain one of the complex neurosurgical pathologies in terms of microsurgery. In recent years, endovascular techniques for treatment of paraclinoid aneurysms, in particular ICA reconstruction using flow-diverting stents, have become a priority. However, surgery of flow stents has a number of limitations, therefore the choice of treatment in each case is individual. PURPOSE: To analyze the results of direct surgery in patients with large and giant aneurysms of the ICA and to determine the role and place of modern microsurgical techniques in the treatment of this vascular disease. MATERIAL AND METHODS: The study included 260 patients with large and giant ICA aneurysms who were operated on at the Institute using microsurgical techniques in the period between 2001 and 2015. The mean age of patients was 45.1 years. The male/female ratio was 1:2.5. One hundred sixty four (63.1%) patients were operated on after hemorrhages, of whom 15 (5.7%) patients were operated on in the acute period; 69 (26.5%) patients had a pseudotumoral course of the disease; 9 (3.5%) patients had a mixed course of the disease; aneurysms were incidentally found in 18 (6.9%) patients. The aneurysm localization was as follows: paraclinoid aneurisms in 158 (60.7%) patients, supraclinoid aneurisms in 77 (29.6%) patients, and ICA bifurcation aneurisms in 25 (9.6%) patients. Microsurgical clipping was performed in 228 (87.7%) patients, including 158 (60.7%) patients in whom an intravascular blood aspiration technique was used. Aneurysm trapping using a flowmetry probe was performed in 16 patients, with creating vascular anastomoses in 4 (1.5%) cases. In 16 (6.2%) patients, interventions were completed by gauze strengthening. We performed a comparative analysis of the results of endovascular treatment of paraclinoid aneurysms reported in recent publications and obtained in the present series. RESULTS: Treatment outcomes (Glasgow Outcome Scale) were favorable (Grade 4-5) in 224 (86.2%) patients and satisfactory in 29 (11.1%) patients. Two patients (0.7%) developed diencephalic (electrolyte) disturbances that were successfully corrected using replacement therapy. The mortality was 2.7% (7 patients); the treatment completeness was 94.3%. Comparison with the literature data demonstrated comparable results for both treatment techniques. CONCLUSION: Microsurgical techniques in treatment of large and giant ICA aneurysms are the methods of choice in complex non-standard cases where endovascular treatment is ineffective or contraindicated. Planning of microsurgical treatment should include the possibility of revascularization surgery. Treatment of these patients should be carried out at large dedicated centers having appropriate expertise and facilities.

[Amygdalohippocampectomy in treatment of epilepsy in patients with temporal lobe cavernomas].

BACKGROUND: In some cases, single-stage or delayed amygdalohippocampectomy (AHE) can be used for effective treatment of epileptic syndrome upon resection of temporal lobe cavernomas. The efficacy of AHE in treatment of temporal epilepsies is proved in general; however, the indications for surgery in patients with cavernomas are not developed. OBJECTIVE: The study objective was to evaluate the efficacy and safety AHE in the treatment of epilepsy in patients with temporal lobe cavernomas and to define the indications for surgery. MATERIAL AND METHODS: Of 14 patients with temporal lobe cavernomas, which manifested as epileptic seizures, 10 patients underwent selective AHE, and 4 patients underwent anteromedial temporal lobectomy. In 12 cases, AHE was performed simultaneously with cavernoma resection. Delayed AHE was carried out in 2 cases. All patients underwent preoperative MRI and EEG. Preoperative video-EEG monitoring was performed in 3 cases. The duration of postoperative follow-up was at least 1 year (mean follow-up was 3.3 years). RESULTS: Improvement in the epileptic syndrome was observed in all patients. In the postoperative period, 7 patients had no seizures (Engel class IA); of them, 3 patients discontinued anticonvulsants. The surgery outcome depended on the disease duration. Significant postoperative complications in the form of reversible hemiparesis were observed in 1 case. CONCLUSION: Amygdalohippocampectomy is highly efficient in treatment of severe forms of epilepsy in patients with temporal lobe cavernomas. In the case of long history of typical temporal seizures and pharmacoresistant epilepsy, AHE can be performed simultaneously with cavernoma resection.

[Improvement of visual functions after successful microsurgical exclusion of a giant aneurysm of the right internal carotid artery using revascularization techniques]. / Uluchshenie zritel'nykh funktsii posle uspeshnogo mikrokhirurgicheskogo vykliucheniia gigantskoi anevrizmy pravoi vnutrennei sonnoi arterii s primeneniem revaskuliariziruiushchikh metodik.

We describe a clinical case of successful treatment of a female patient with a giant paraclinoid aneurysm of the right ICA. The aneurysm had a pseudotumoral course and manifested as pronounced progressive visual impairments. The patient underwent microsurgery including trapping/clipping of the right ICA aneurysm after creation of an EICMA and a high-flow anastomosis between the ECA and the M2 segment of the MCA. The surgery enabled decompression of the optic nerves, avoiding their injury. Postoperatively, the patient underwent transcutaneous electrical stimulation of the optic nerves. The case feature was that the patient developed gradual restoration of the blind eye vision.

[Combined treatment of cerebral arteriovenous malformations. Experience of the Burdenko Neurosurgical Institute].

OBJECTIVE: Despite the achievements of recent years, cerebral AVMs continue to pose a challenge to treatment. The objective of this work was the development of recommendations for combined treatment of AVMs based on analysis of the available material and published data. MATERIAL AND METHODS: The study included 93 patients hospitalized at the Neurosurgical Institute for combined treatment of cerebral AVMs in 2010-2014. A group of combined surgery (removal of an AVM with preoperative embolization) consisted of 40 patients, and a group of combined radiotherapy (radiation after partial embolization or partial removal of an AVM) included 53 patients. 36 patients underwent radiosurgery, and 17 patients received stereotactic radiation therapy. Both groups were analyzed in terms of outcomes, complications, and follow-up results. RESULTS: In the group of combined surgery, according to the Glasgow outcome scale, good results (grade 4-5) were achieved in 35 (87.5%) patients at discharge and in 27 (90%) patients during follow-up. Treatment outcomes, surgery duration, and the amount of blood loss were not significantly different from those in the control group. Complete AVM obliteration was achieved in 29 (80.6%) patients 3 years after radiosurgery and in 8 (47%) patients after stereotactic radiotherapy. In discussion, these findings are compared to the published data, and recommendations for AVM treatment are suggested. CONCLUSION: The combined treatment of AVMs is effective management for patients with complex AVMs (Spetzler-Martin grade III-IV AVMs). Successful treatment of AVMs requires careful planning and teamwork of vascular and endovascular neurosurgeons, radiologists, and neurologists.

[Surgical treatment of cerebral vascular diseases].

Theoretical and practical aspects of the complex treatment of brain and spinal vascular diseases using microsurgical, endovascular and radiosurgical methods are considered. Authors present the data demonstrating that, due to the implementation of the program of development of vascular centers in the Russian Federation, considerable progress was made in the treatment of cerebral aneurisms and hemorrhagic stroke. In author's opinion, wide introduction of surgical methods in the treatment of occlusive lesions of the blood vessels supplying the brain is needed.

[Intraoperative indocyanine green fluorescence angiography in surgery of brain aneurysms. The first experience with using the technique and literature review].

Intraoperative blood flow assessment after aneurysm clipping has become a standard procedure in vascular neurosurgery worldwide. Intraoperative indacyanine green angiography (ICG) has recently been certified in Russia. Fifteen patients with aneurysms operated with ICG control in Burdenko NSI are described in present publication. ICG advantages and weaknesses are discussed along with alternative flow control techniques available now.

[Trapping of large and giant paraclinoid aneurysm based on intraoperative flowmetry test].

Four cases of giant or large paraclinoid aneurysms of the internal carotid artery successfully trapped after assessing blood flow using a flowmeter are presented. In all cases, the initial plan for clipping was changed to aneurysm trapping due to various reasons. The collateral blood flow was assessed using the flowmetry test, the original procedure of measuring volumetric blood flow in the middle cerebral artery using an ultrasonic flowmeter. We analyze the reasons for clipping refusal, the procedure of measuring blood flow, treatment outcomes, and catamnestic data. The risks of reconstructive surgeries involving the internal carotid artery are discussed and the literature data are analyzed. Conclusions. Ultrasonic flowmetry is a simple and safe method for intraoperative control over blood circulation, which may play the key role in complicated surgical cases.

[Intra-arterial injection of verapamil in treatment of cerebral vasospasm in a patient with acute subarachnoid hemorrhage from an aneurysm: case report].

Cerebral vasospasm is a major cause of cerebral ischemia and neurological deficits in patients after SAH from the aneurysm. According to angiorraphy cerebral vasospasm in acute rupture of an aneurysm is detected in 50-70% of cases, and the risk of ischemia on it's background is 19-46%. One of the new trends of treatment of cerebral vasospasm is the intra-arterial injection of calcium channel blockers. The article presents a case of selective intra-arterial injection of verapamil for the treatment of cerebral vasospasm in patient after severe subarachnoid and parenchymal hemorrhage of the internal carotid artery bifurcation aneurysm with a good clinical outcome.

[Long-term results of treatment of patients with large or giant intracranial aneurysms of internal carotid artery].

At Burdenko Neurosurgical Institute annually arrives 50-60 patients with large and giant aneurysms of the brain, which is nearly 15% of all patients with aneurysms. About half of them--patients with paraclinoid aneurysms, which are successfully treated by cliping using techniques of intravascular blood aspiration (IVBA) or proximal control of blood flow in the neck. This paper analyzes the long-term outcomes of patients who were operated for large and giant aneurysms of the internal carotid artery in the last 15 years. Catamnesis was collected from 93 (71.5%) of 130 patient. Mean follow-up was 65.2 +/- 36.0 months. Mean age of patients at the time of surgery was 45.55 +/- 7.5 years and at the time of catamnesis evaluation 50.4 +/- 10.2 years. Men to women ratio was 18:75. Patients with multiple aneurysms was 22.6% (21 patients). In most cases--67 (72%) patients--aneurysms were treated by cliping of aneurysms using IVBA, in 14 (15%) cases--using proximal control of blood flow in the neck, in 5 (5.4%) cases--reinforced with gauze and glue, in 6 (6.5%) patient--by aneurysm trapping, in one case the aneurysm was not cliped. Radical surgery performed in 87 (93.5%) patients. Catamnesis analysis of survived patients showed that 55.8% of them are complaining of headaches, which they associate with the operation. 39 (43.3%) patients noted persistent elements of asthenia, 4 (4.6%) had sleep disorders, 5 (5.8%) suffered of epileptic seizures and 1 (1.10%) of depression. Korsakoff's syndrome, developed after surgery in 2 (2.3%) patients remains. Only 38.4% of patients after surgery continue to work. Favorable outcome on the Glasgow outcome scale (4-5) was obtained in 81 (87.1%) patients, poor (2-3) in 5 (5.4%) patients. Mortality rate was 7.5%. Severe oculomotor disturbances have a slight tendency to recovery over time.