Results: Chart review identified 17 patients. The most common symptom at diagnosis was tinnitus, followed by sensorineural hearing loss, vertigo, facial pain, and headache. Physical exam revealed facial hypesthesias in 3 patients, facial paresis in 2 patients, while 14 patients had no physical exam findings on presentation. MRI studies of all patients revealed lesions which are isodense with br...

Postoperative cerebral venous sinus thrombosis (CVST) is a rare complication of the retrosigmoid approach. To address lack literature, we performed retrospective analysis. The thromboses were divided into those demonstrating radiological (rCVST) and clinical (cCVST) features, latter diagnosed during hospitalization. We identified former by contrast in sigmoid (SS) or transverse sinuses (TS), ev...

Abstract Background Retraction is necessary to access deep areas in the brain and skull base, but prolonged forceful use of fixed retraction might be injurious. Several techniques were developed, concept minimally invasive neurosurgery, eliminate or minimize retractors. The authors discuss technical considerations limits applying dynamic surgery for a variety lesions using different approaches....

A b s t r a c t In this paper, we briefly discuss the dynamic and functional approach to computer symbolic tensor analysis. The ccgrg package for Wolfram Language/Mathematica is used to illustrate this approach. Some examples of applications are attached.

In this article, we propose a fuzzy class relation assigning to each pair of finite fuzzy sets a degree to which they are equipollent, which indicates that they have the same number of elements. The concepts of fuzzy sets and fuzzy classes in the class of all countable sets are introduced, and several standard relations and constructions, such as the fuzzy power set and exponentiation, are defi...