Zhurnal voprosy neirokhirurgii imeni N. N. Burdenko最新文献

According to the order of April 15, 1935, the opening of the Department of Neurosurgery, the first head of which was Nikolai N. Burdenko, laid the foundation for the development of neurosurgical activity and training of neurosurgical personnel in the USSR within the walls of the Russian Medical Academy of Medical Sciences (TsIUV). N.N. Burdenko was an outstanding Soviet surgeon, one of the founders of neurosurgery, academician of the Academy of Sciences of the USSR (1939) and the Academy of Medical Sciences of the USSR (1944-1946), Hero of Socialist Labor, honorary member of the British Royal Society of Surgeons and the Paris Academy of Surgery, Colonel General of Medical Service.

Despite the progress in understanding the pathogenesis of diffuse brainstem tumors, treatment of these neoplasms is usually empirical and conducted without morphological and molecular verification. Liquid biopsy is a minimally invasive technique providing data on tumor biology without standard biopsy. This method is based on analysis of cell-free nucleic acids (predominantly, extracellular DNA) in biological fluids with detection of specific mutations. Despite wide implementation in diagnosis and disease monitoring in extracranial malignancies, it is infrequently applied in neuro-oncology.

Objective: To estimate diagnostic value of liquid biopsy in detecting H3K27 and BRAF V600E mutations in patients with diffuse brainstem tumors.

Material and methods: Lumbar puncture with cerebrospinal fluid sampling was performed in 16 patients (5 children and 11 adults) with diffuse brainstem tumors verified by neuroimaging data. Cell-free DNA (cfDNA) was used in digital droplet PCR for determination of H3F3A K28M and BRAF V600E oncogenic missense variants. In 14 patients, investigation of cfDNA was performed in parallel with analysis of correspondent mutations in DNA derived from tumor tissue.

Results: None patient had BRAF V600E mutation. H3F3A K28M variant was detected in 5 CSF samples and 6 tumor specimens from patients who underwent surgical biopsy. Thus, overall sensitivity of the method in determination of H3F3A K28M variant was 92.9% (13/14).

Conclusion: Liquid biopsy is highly informative for identifying the specific mutation H3F3A K28M and often verifies diffuse brainstem glioma without standard biopsy.

Morton's neuroma is one of the most common entrapment mononeuropathies of peripheral nerves. The main clinical manifestation is neuropathic pain syndrome in the foot. Currently, many methods of treatment are proposed. Despite the advantages of each method, the main disadvantages are low effectiveness, aggravation of symptoms due to scar-related complications, or relatively high incidence of complications following surgical invasion.

Objective: To evaluate the effectiveness of percutaneous ultrasound-guided neurolysis with local administration of betamethasone in patients with Morton's neuroma.

Material and methods: The study included 14 female patients aged 24-56 years (mean 44.7±6.4). We analyzed VAS scores of pain syndrome (mean 7.1±1.1) and DN4 scores of neuropathic pain (mean 4.9±0.9). Ultrasound imaging was performed to estimate localization and volume of neuroma. Mean volume of neuroma was 226±142 mm³.

Results: Mean follow-up was 12 months. In 12 out of 14 patients, there was a significant decrease in pain intensity to VAS score 1.1±0.6 and regression of neuropathic pain to DN4 score 0.5±0.5. In 2 cases, neuropathic pain recurred after 6 months with enlargement of neuromas (to 429 and 452 mm³). There were no complications in any patient.

Conclusion: Percutaneous ultrasound-guided neurolysis of Morton's neuroma with local administration of betamethasone is an effective and promising minimally invasive method. Selection criterion for this procedure may be small volume of neuroma. Further research is required to clarify the indications for this procedure.

Laparoscopic approach is common in pelvic tumor surgery. Several small samples of patients after laparoscopic resection of presacral neurogenic tumors were described. Safety and advantages of this intervention are interesting.

Objective: To analyze clinical outcomes of laparoscopic resection of presacral neurogenic tumors.

Material and methods: Eleven patients including 2 children aged 11 and 17 years underwent laparoscopic tumor resection between 2021 and 2024. We estimated tumor size and localization, surgery time, blood loss, complications, postoperative hospital-stay, histological diagnosis and continued growth or recurrence in the follow-up period. The median follow-up was 19.2 (3-36) months.

Results: Tumor size ranged from 4 to 10 cm, mean surgery time - 153.6 min, blood loss - 356.4 ml. Postoperative complications developed in 7 patients, including acute urinary retention, neuropathic pain syndrome, hematomas and dynamic intestinal obstruction. Total resection was achieved in 8 (72.7%) patients, subtotal resection - 2 (18.2%), partial resection - 1 (9.1%) case. Tumors were predominantly neurogenic: 6 (54.5%) - sacral nerve schwannomas, 1 (9%) - NF1-related schwannomatosis, 1 (9%) - meningioma, 1 (9%) - ganglioneuroma, 1 (9%) - fibromyxoid sarcoma, 1 (9%) - solitary fibrous tumor. There were no recurrences, continued growth or recurrence of preoperative symptoms in the follow-up period.

Conclusion: Laparoscopic resection of presacral neurogenic tumors is an effective surgical technique with good visualization of surgical field and possible gross total resection.

Objective: To analyze the results of selective dorsal rhizotomy (SDR) in children with hereditary spastic paraplegia (Strumpell disease, HSP).

Material and methods: SDR was performed in 8 patients with genealogical or genetic verification of HSP between 2022 and 2024. Mean age of patients was 10.3±4.9 years. We analyzed the results via testing spasticity and goniometry before surgery, on the third postoperative day and in delayed postoperative period. Mean follow-up period was 11±7.5 months.

Results: All children improved lower limb movements. There was regression of spasticity in most cases. Three children had significant impairment of movements in some joints due to orthopedic deformities. No regression of the post-surgery movements level and even increase later in some cases was observed. There were no complications.

Conclusion: SDR is effective and safe in patients with HSP. Long-term follow-up of larger samples is required.

The authors studied motor disorders in idiopathic normotensive hydrocephalus (iNPH, Hakim-Adams syndrome) using C-Mill treadmill.

Objective: To present the first experience of C-Mill in assessing the motor function in patients with iNPH.

Material and methods: The study is carried out at the Pavlov State Medical University and Hospital for War Veterans. To date, we enrolled 10 patients with iNPH and examined these ones using a unique multifunctional tool C-Mill before surgery, after tap test and after cerebrospinal fluid bypass surgery.

Results: In all cases, we obtained positive postoperative results with improvement of motor function.

Conclusion: C-Mill is a special treadmill with built-in tools designed to analyze human gait and balance, as well as for rehabilitation to improve gait and balance disorders in virtual reality. C-Mill sensory treadmill is valuable to assess motor disorders in patients with iNPH before surgery, improve the diagnostic process when selecting patients for surgery using invasive diagnostic methods and significantly improve the accuracy of postoperative evaluating the effectiveness of surgical treatment by quantifying the regression of motor disorders.

According to the modern WHO classification, pituitary carcinomas (or metastatic neuroendocrine pituitary tumors) are pituitary tumors with confirmed craniospinal and/or distant metastases. The main goal of histological analysis of pituitary carcinomas is to confirm pituitary origin of metastases. Treatment usually includes surgery and radiotherapy, dopamine agonists in maximum possible doses in case of prolactin-secreting pituitary carcinomas and chemotherapy with preferable temozolomide.

Objective: To present the results of diagnosis and treatment of two patients with prolactin-secreting pituitary carcinomas.

Material and methods: The authors describe 2 patients with prolactin-secreting pituitary carcinomas arising from drug-resistant aggressive prolactinomas with histologically confirmed metastases. In both cases, combined treatment included surgery, radio- and chemotherapy (cabergoline and temozolomide).

Results: A 47-year-old patient underwent surgery, radio- and dopamine agonist therapy with subsequent regression of tumor growth in the follow-up period. However, progressive increase in prolactin concentration necessitated PET/CT with detection of multiple metastases in bones and lymph nodes. Temozolomide therapy led to temporary shrinkage of metastatic foci with subsequent progression. The second case was characterized by multiple brain and spinal cord metastases in a 47-year-old woman. Resection of intracranial metastasis and temozolomide therapy stabilized the disease and normalized serum prolactin throughout 2-year follow-up with subsequent progression.

Conclusion: Pituitary carcinoma is a rare tumor with unfavorable prognosis. Treatment is currently not standardized and determined by available world experience regarding various chemotherapeutic drugs. Temozolomide is the most effective drug. However, short-term remission is usually followed by subsequent disease progression in most cases.

Craniopharyngioma is a benign tumor in adults and children characterized by local invasion of surrounding brain structures. HARDI-CSD tractography is one of the modern MR methods for comprehensive visualization of functionally significant conduction pathways.

Objective: To determine the possibility of visualizing some structures of chiasmatic-sellar region and third ventricle (hypothalamic-pituitary tract (pituitary stalk), optic pathways, fornix, mammillothalamic tract) using HARDI-CSD tractography in patients with suprasellar craniopharyngiomas, especially after failed CT and standard MRI of these structures.

Material and methods: A pilot study included 4 patients (2 adults and 2 children) with craniopharyngiomas who underwent surgical treatment at the Burdenko Neurosurgery Center between January and July 2024. Patients underwent MR tractography before and after surgery.

Results: HARDI-CSD tractography reconstructed optic tracts in 3 patients before and after surgery. Simultaneous visualization of several structures (pituitary stalk, fornix, optic tracts) was performed before and after surgery in 1 case. These data were useful for planning surgery and evaluating postoperative outcomes. In one patient, imaging of mammillothalamic tract was obtained after resection of large cystic intra-extraventricular craniopharyngioma.

Conclusion: HARDI-CSD tractography provides valuable information about basal cerebral pathways (optic pathways, pituitary stalk, fornix, mammillothalamic tract) when planning and evaluating the results of surgical treatment of craniopharyngiomas.

Background: Hemorrhagic stroke is associated with high risk of adverse outcome and follows intake of anticoagulants and antiplatelet agents in 25% of cases. The latest clinical guidelines of the Neurocritical Care Society for correction (reversal) of the effect of anticoagulants and antiplatelet agents in hemorrhagic stroke were published in 2016.

Material and methods: In accordance with PRISMA recommendations, we reviewed the PubMed, eLibrary and UpToDate databases to a depth of 5 years and selected 48 articles.

Results and discussion: Direct oral anticoagulants are currently common. To reverse their effect, one can use specific antidotes (idarucizumab is recommended for dabigatran, andexanet alfa (not yet registered In Russia) for factor Xa inhibitors (rivaroxaban, apixaban)) and combination of prothrombin complex concentrate and tranexamic acid. Protamine sulfate is antidote for unfractionated and low molecular weight heparins. Protamine sulfate completely inactivates unfractionated heparin, but it is less effective against low molecular weight heparin. It is characterized by high probability of anaphylactic reactions, especially after repeated administrations. The effectiveness of andexanet alpha and activated factor VII for reversing the effect of low molecular weight heparin is being studied. Fondaparinux sodium is used for heparin-induced thrombocytopenia. Protamine sulfate is ineffective for reversing the effect of fondaparinux. One can use prothrombin complex concentrate and andexanet alpha, but their effectiveness is unclear. Ciraparantag is being studied in clinical trials. Apparently, ciraparantag is highly effective as an antidote for various anticoagulants.

Conclusion: Early hemostatic therapy and reversal of anticoagulant effects in patients with hemorrhagic stroke significantly reduce the risk of adverse outcomes. This problem is being studied. Regular literature review with creation of updated clinical guidelines is needed.

Background: To date, 16 cases of en plaque hyperostotic meningioma of the convexity have been described. There are no clinical guidelines for the treatment of such patients.

Objective: To study the factors influencing the results of surgical treatment of en plaque convexity hyperostotic meningioma, to formulate the appropriate decision-making algorithm.

Material and methods: A retrospective total group of 69 patients with en plaque convexity hyperostotic meningioma who underwent surgery at Burdenko Neurosurgical Center between 2014 and 2023. We analyzed clinical manifestations, tactics and results of surgery and radiotherapy using statistical methods.

Results and discussion: Total resection of small local non-infiltrative hyperostotic meningioma not involving the superior sagittal sinus did not cause neurological deterioration. In case of spread infiltrative hyperostotic meningiomas, the best results (including regression of intracranial hypertension in all cases) were obtained after non-radical surgeries (resection of hyperostosis without wide excision of the dura or even without dura opening). Extent of resection of involved dura and intracranial tumor did not affect relapse-free survival. Additional morbidity at discharge from the clinic was 35%, after ≥6 months - 16%. The most common (27.5%) complication was pseudomeningocele. Redo surgery rate for pseudomeningocele - 7%, hematomas - 7%, wound infection - 6%. There were no mortality in the series. Radiotherapy increased relapse-free survival without statistical confirmation.

Conclusion: Total resection provides optimal results in patients with small convexity hyperostotic meningioma and no brain invasion. Resection of hyperostosis and expansive cranioplasty are preferable for large and giant convexity hyperostotic meningioma involving venous sinuses and / or the brain.