[Brainstem arachnoid cyst: case report and review].

Unlabelled: There are no literature data on brainstem arachnoid cysts in humans.

Objective: To describe the clinical case of brainstem (pontomesencephalic) arachnoid cyst and to analyze classification, pathogenesis, differential diagnosis and treatment of this pathology considering literature data and own experience.

Material And Methods: A 29-year-old patient with pontomesencephalic arachnoid cyst is reported.

Synthesis of Nanoparticles by Spark Discharge as a Facile and Versatile Technique of Preparing Highly Conductive Pt Nano-Ink for Printed Electronics.

A cost-effective, scalable and versatile method of preparing nano-ink without hazardous chemical precursors is a prerequisite for widespread adoption of printed electronics. Precursor-free synthesis by spark discharge is promising for this purpose. The synthesis of platinum nanoparticles (PtNPs) using a spark discharge under Ar, N, and air has been investigated to prepare highly conductive nano-ink.

[Treatment of primary craniofacial (sinonasal) malignant tumors affecting the anterior and middle skull base].

Sinonasal malignant tumors are characterized by high histological variability and complexity of the differential diagnosis. Currently, there are classifications of these tumors, which are based on their localization and involvement of various anatomical structures. However, generally accepted algorithms for treatment of this pathology have not yet been developed.

[Results of surgical treatment of skull-base primary malignant tumors with intracranial invasion].

Objective: Analysis of factors affecting life expectancy at patients with primary malignant tumors of anterior and middle parts of the skull base with intracranial invasion.

Material And Methods: 139 patients (47 women and 92 men) with primary malignant tumors of the anterior and middle parts of the skull base with intracranial invasion (stage T4 according to TNM classification or stage C according to Kadish classification for estesioneuroblast ) were treated at the NMRCN Burdenko for the period from 2004 till 2018. The study was conducted by the method of total sampling.

[Epidemiology, diagnosis, clinical symptoms, and classification of malignant primary skull base tumors].

A review of literature presents up-to-date information on the prevalence, incidence, clinical manifestations, diagnosis, and classification of malignant primary skull base tumors (MPSBTs). In the structure of total cancer incidence, malignant head and neck tumors account for 5% of all annual cancer deaths in the USA and are among the 5 most common groups of tumors in males worldwide. These tumors develop most often in the sixth decade of life, occurring 2 times more often in males than in females.