Ablační procedury, které jsou součástí funkční neurochirurgie, prodělávají v posledních letech renesanci. Mezi tyto procedury se řadí i mediální talamotomie jako analgetický výkon u širokého spektra bolestivých stavů. Jednou z možných indikací k mediální talamotomii je refrakterní neural gie trigeminu. Management pacientů s refrakterní neuralgií trigeminu je svízelný a mediální talamotomie pomocí Leksellova gama nože těmto pacientům může pomoci. Následující článek má za cíl stručně a přehledně představit mediální talamotomii pomocí Leksellova gama nože jako bezpečnou a efektivní metodu v léčbě chronické bolesti a naše zkušenosti s touto metodou u pacientů s neuralgií trigeminu, u kterých farmako logická i chirurgická léčba selhala.
Ablative procedures, as an important part of functional neurosurgery, have experienced a renaissance in recent years. These procedures include medial thalamotomy as an analgesic procedure for a wide range of pain syndromes. Refractory trigeminal neuralgia is one of the indications for medial thalamotomy. Management of patients with refractory trigeminal neuralgia is challenging, and medial thalamotomy using the Leksell gamma knife may help these patients. This article aims to briefly and clearly present medial thalamotomy using the Leksell gamma knife as a safe and effective method in the treatment of chronic pain and our experience with this procedure in patients with trigeminal neuralgia in whom pharmacological and surgical treatment has failed.
- Klíčová slova
- radiochirurgická talamotomie,
- MeSH
- lidé MeSH
- neuralgie trigeminu * chirurgie radioterapie MeSH
- radiochirurgie metody MeSH
- thalamus chirurgie MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- přehledy MeSH
BACKGROUND: Childhood thalamopeduncular gliomas arise at the interface of the thalamus and cerebral peduncle. The optimal treatment is total resection but not at the cost of neurological function. We present long-term clinical and oncological outcomes of maximal safe resection. METHODS: Retrospective review of prospectively collected data: demography, symptomatology, imaging, extent of resection, surgical complications, histology, functional and oncological outcome. RESULTS: During 16-year period (2005-2020), 21 patients were treated at our institution. These were 13 girls and 8 boys (mean age 7.6 years). Presentation included progressive hemiparesis in 9 patients, raised intracranial pressure in 9 patients and cerebellar symptomatology in 3 patients. The tumour was confined to the thalamus in 6 cases. Extent of resection was judged on postoperative imaging as total (6), near-total (6) and less extensive (9). Surgical complications included progression of baseline neurological status in 6 patients, and 5 of these gradually improved to preoperative status. All tumours were classified as low-grade gliomas. Disease progression was observed in 9 patients (median progression-free survival 7.3 years). At last follow-up (median 6.1 years), all patients were alive, median Lansky score of 90. Seven patients were without evidence of disease, 6 had stable disease, 7 stable following progression and 1 had progressive disease managed expectantly. CONCLUSION: Paediatric patients with low-grade thalamopeduncular gliomas have excellent long-term functional and oncological outcomes when gross total resection is not achievable. Surgery should aim at total resection; however, neurological function should not be endangered due to excellent chance for long-term survival.
- MeSH
- dítě MeSH
- gliom * komplikace diagnostické zobrazování chirurgie MeSH
- lidé MeSH
- magnetická rezonanční tomografie MeSH
- nádory mozku * komplikace diagnostické zobrazování chirurgie MeSH
- neurochirurgické výkony metody MeSH
- retrospektivní studie MeSH
- thalamus diagnostické zobrazování patologie chirurgie MeSH
- výsledek terapie MeSH
- Check Tag
- dítě MeSH
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
BACKGROUND: The role of surgery in the management of pediatric non-pilocytic infiltrative thalamic gliomas needs to be revisited specifically with regard to molecularly defined subtypes. METHODS: A retrospective review of a consecutive series of children operated on a thalamic tumor between 1992 and May 2018 was performed. Neuroimaging data were reviewed for localization and extent of resection; pathology was re-reviewed according to the current WHO classification, including assessment of histone H3 K27 mutational status. RESULTS: Forty-nine patients with a thalamic tumor aged < 18 years at diagnosis were identified. Twenty-five patients (51%) had a non-pilocytic infiltrative glioma, of which the H3 K27M status was available in 22. Fourteen patients were diagnosed as diffuse midline glioma (DMG) H3 K27M mutant. There was no statistically significant difference in survival between patients harboring the H3 K27M mutation and wildtype. Resection ("any resection > 50%" vs "biopsy") and histological tumor grade ("°II" vs "°III+°IV") were statistically significant predictors of survival (univariate: p = 0.044 and p = 0.013, respectively). These results remained significant on multivariate analysis (HR 0.371/p = 0.048, HR 9.433/p = 0.035). CONCLUSION: We advocate to still consider an attempt at maximal safe resection in the multidisciplinary treatment of unilateral thalamic non-pilocytic gliomas irrespective of their H3 K27-mutational status.
- MeSH
- dítě MeSH
- gliom * genetika chirurgie MeSH
- histony genetika MeSH
- lidé MeSH
- mladiství MeSH
- mutace MeSH
- nádory mozku * genetika chirurgie MeSH
- předškolní dítě MeSH
- retrospektivní studie MeSH
- thalamus * diagnostické zobrazování chirurgie MeSH
- Check Tag
- dítě MeSH
- lidé MeSH
- mladiství MeSH
- mužské pohlaví MeSH
- předškolní dítě MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
OBJECTIVE: The extreme lateral supracerebellar infratentorial (ELSI) approach has the potential to access several distinct anatomical regions that are otherwise difficult to reach. We have illustrated the surgical anatomy through cadaveric dissections and provided an extensive review of the literature to highlight the versatility of this approach, its limits, and comparisons with alternative approaches. METHODS: The surgical anatomy of the ELSI has been described using 1 adult-injected cadaveric head. Formalized noninjected brain specimens were also dissected to describe the brain parenchymal anatomy of the region. An extensive review of the literature was performed according to each targeted anatomical region. Illustrative cases are also presented. RESULTS: The ELSI approach allows for wide exposure of the middle and posterolateral incisural spaces with direct access to centrally located intra-axial structures such as the splenium, pulvinar, brainstem, and mesial temporal lobe. In addition, for skull base extra-axial tumors such as petroclival meningiomas, the ELSI approach represents a rapid and adequate method of access without the use of extensive skull base approaches. CONCLUSIONS: The ELSI approach represents one of the most versatile approaches with respect to its ability to address several anatomical regions centered at the posterior and middle incisural spaces. For intra-axial pathologies, the approach allows for access to the central core of the brain with several advantages compared with alternate approaches that frequently involve significant brain retraction and cortical incisions. In specific cases of skull base lesions, the ELSI approach is an elegant alternative to traditionally used skull base approaches, thereby avoiding approach-related morbidity.
- MeSH
- disekce MeSH
- dura mater anatomie a histologie MeSH
- hluboké zádové svaly anatomie a histologie chirurgie MeSH
- lidé MeSH
- mozeček anatomie a histologie MeSH
- mozkový kmen anatomie a histologie chirurgie MeSH
- mrtvola MeSH
- neurochirurgické výkony metody MeSH
- pulvinar anatomie a histologie chirurgie MeSH
- skalní kost anatomie a histologie chirurgie MeSH
- spánkový lalok anatomie a histologie chirurgie MeSH
- thalamus anatomie a histologie chirurgie MeSH
- zadní jáma lební anatomie a histologie chirurgie MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- přehledy MeSH
Úvod: Tumory thalamu jsou relativně vzácné léze rostoucí ve vysoce funkčně důležité části mozku. Jsou častější v pediatrické populaci. Jejich chirurgické odstranění je náročné s rizikem značné morbidity. Relativně benigní charakter mnoha těchto lézí vybízí k pokusu o jejich radikální odstranění. Chirurgický přístup musí být velice pečlivě plánován, obvykle s použitím moderních diagnostických metod, jako je DTI (Diffusion Tensor Imaging). Lokalizace a projekce tumoru v thalamu hraje při výběru přístupu důležitou roli. Materiál a metodika: Od roku 2005 do roku 2014 bylo na Neurochirurgické klinice FN Brno operováno celkem 13 pacientů s tumorem thalamu, průměrný věk 20,6 roku (1–64 let). Jednalo se o 10 pacientů mužského a tři ženského pohlaví. Další 15letý pacient s pilocytárním astrocytomem je observován. Transkortikální přístup byl použit 7×, transkalózní přístup 4×, transsylvijský přístup 2× a supracerebellární infratentoriální 1×. Výsledky: Totální resekce (GTR) byla provedena v šesti případech, subtotální resekce ve čtyřech případech a parciální resekce ve třech případech. Jednalo se o osm pilocytárních astrocytomů, jeden subependymální obrovskobuněčný astrocytom, jeden difúzní astrocytom GII a tři glioblastomy. Dva starší pacienti s glioblastomem zemřeli šest a devět měsíců po operaci. Ostatní pacienti přežívají se střední délkou sledování 5 let. Neurologický stav po operaci byl dobrý kromě jednoho staršího pacienta s glioblastomem, u kterého se rozvinula těžká hemiparéza a fatická porucha. Závěr: Pokud je zvolen správný chirurgický přístup, thalamické tumory mohou být celkem bezpečně radikálně odstraněny. Volba přístupu je dána projekcí tumoru. Menší tumory, které nedosahují povrchu thalamu, mohou být observovány nebo bioptovány, pokud máme podezření na maligní povahu léze. Následná onkologická léčba je vyhrazena pro vysokostupňové gliomy.
Introduction: Thalamic tumours are relatively rare lesions growing in a highly functional part of the brain. They are more frequent in paediatric population. Their surgery is challenging and associated with a risk of significant morbidity. Relatively benign nature of many of these tumours suggests that radical resection should be attempted. The approach has to be very carefully planned, sometimes with help of modern diagnostic methods such as DTI. Location and projection of the tumour in the thalamus plays an important role in selecting an approach. Material and methods: During 2005–2014 we operated on 13 patients with thalamic tumours, mean age 20.6 years (1–64 years). These were 10 males and three females. Another 15-year-old male patient is being observed. Transcortical approach was used 7×, transcallosal 4×, transsylvian 2× and supracerebellar infratentorial 1×. Results: Gross total resection was achieved in six cases, subtotal in four and partial in three. There were eight pilocytic astrocytomas, one subependymal giant cell astrocytoma, one diffuse astrocytoma G II and three glioblastomas. Two older patients with glioblastomas died six and nine month after operation. All other patiens are still alive with the mean follow-up 5 years. Neurological status after the operation was good except for one older patient with glioblastoma who developed severe hemiparesis and aphasia. Conclusion: Thalamic tumours might be safely radically resected if correct approach is used. The choice of approach is based on the projection of the tumour. Smaller tumours that are not reach thalamic surface might be followed up or biopsied if there is a likelihood of their malignant nature. Oncological treatment should be reserved to malignant tumours. Key words: thalamic tumours – surgical approaches The authors declare they have no potential conflicts of interest concerning drugs, products, or services used in the study. The Editorial Board declares that the manuscript met the ICMJE “uniform requirements” for biomedical papers.
- MeSH
- difuzní magnetická rezonance MeSH
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- nádory mozku * diagnóza chirurgie patologie MeSH
- nemoci thalamu * diagnóza chirurgie patologie MeSH
- neurochirurgické výkony * klasifikace metody využití MeSH
- neuronavigace MeSH
- thalamus anatomie a histologie chirurgie patologie MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- práce podpořená grantem MeSH
Electrode implantation into the subthalamic nucleus for deep brain stimulation in Parkinson's disease (PD) is associated with a temporary motor improvement occurring prior to neurostimulation. We studied this phenomenon by functional magnetic resonance imaging (fMRI) when considering the Unified Parkinson's Disease Rating Scale (UPDRS-III) and collateral oedema. Twelve patients with PD (age 55.9± (SD)6.8 years, PD duration 9-15 years) underwent bilateral electrode implantation into the subthalamic nucleus. The fMRI was carried out after an overnight withdrawal of levodopa (OFF condition): (i) before and (ii) within three days after surgery in absence of neurostimulation. The motor task involved visually triggered finger tapping. The OFF/UPDRS-III score dropped from 33.8±8.7 before to 23.3±4.8 after the surgery (p<0.001), correlating with the postoperative oedema score (p<0.05). During the motor task, bilateral activation of the thalamus and basal ganglia, motor cortex and insula were preoperatively higher than after surgery (p<0.001). The results became more enhanced after compensation for the oedema and UPDRS-III scores. In addition, the rigidity and axial symptoms score correlated inversely with activation of the putamen and globus pallidus (p<0.0001). One month later, the OFF/UPDRS-III score had returned to the preoperative level (35.8±7.0, p = 0.4).In conclusion, motor improvement induced by insertion of an inactive electrode into the subthalamic nucleus caused an acute microlesion which was at least partially related to the collateral oedema and associated with extensive impact on the motor network. This was postoperatively manifested as lowered movement-related activation at the cortical and subcortical levels and differed from the known effects of neurostimulation or levodopa. The motor system finally adapted to the microlesion within one month as suggested by loss of motor improvement and good efficacy of deep brain stimulation.
- MeSH
- edém patologie MeSH
- elektrostimulační terapie metody MeSH
- globus pallidus účinky léků patologie chirurgie MeSH
- hluboká mozková stimulace metody MeSH
- implantované elektrody MeSH
- levodopa terapeutické užití MeSH
- lidé středního věku MeSH
- lidé MeSH
- magnetická rezonanční tomografie metody MeSH
- motorické korové centrum účinky léků patologie chirurgie MeSH
- nucleus subthalamicus účinky léků patologie chirurgie MeSH
- Parkinsonova nemoc farmakoterapie patologie chirurgie MeSH
- thalamus účinky léků patologie chirurgie MeSH
- Check Tag
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- randomizované kontrolované studie MeSH
- MeSH
- bolest MeSH
- elektrická stimulace MeSH
- finanční podpora výzkumu jako téma MeSH
- lidé středního věku MeSH
- lidé MeSH
- mozková kůra MeSH
- thalamus chirurgie MeSH
- Check Tag
- lidé středního věku MeSH
- lidé MeSH
- ženské pohlaví MeSH
- Publikační typ
- kazuistiky MeSH
- kongresy MeSH
