https://www.selleckchem.com/products/A014418.html Congenital coagulation disorders account about 1-2% and can pose a serious risk for neurosurgical patients. Indeed, coagulation management in these patients is essential to ensure normal hemostasis. Analysis of available literature devoted to this issue and case series of neurosurgical patients with congenital coagulation disorders. Literature data were obtained from the PubMed, Cochrane Library, Medline and Google Scholar databases for the period from 2019 to 2020. Over 200 reports devoted to our scientific issue were selected. We determined the key features of perioperative management of neurosurgical patients with congenital coagulation disorders. We have also analyzed 10 similar patients for the period from 2008 to 2020. Comprehensive analysis of anamnesis, adequate diagnosis, perioperative planning and multidisciplinary approach are essential for successful elective surgery in patients with congenital coagulation disorders.Multiple gliomas are determined by synchronous two or more tumors located in different brain regions. It is important to distinguish multiple primary tumors and metastatic brain lesion. In the first case, tumor spread can`t be explained by dissemination along the cerebrospinal fluid pathways, commissural fibers or local metastases. Multiple primary tumors with different histological structures are called bidermal neoplasms. Surgery is preferred in these patients with severe symptoms. The purpose of surgery is maximum resection of tumor. Follow-up may be advisable for small tumors without clinical manifestations. Treatment of multiple gliomas includes surgery, radiotherapy and chemotherapy. Multiple tumor process in children is much more severe compared to a single neoplasia that requires neurological and neuroimaging control and determines treatment strategy. The authors report 3 children with multicentric gliomas, discuss the various aspects of diagnosis and treatment of multiple gliomas and