ABSTRACT
The prognosis of hepatocellular carcinoma (HCC) is closely associated microvascular invasion (MVI), and in recent years, more and more clinical studies have been conducted on MVI, but there are few articles on the development of basic pathology and related controversies. As the basis of clinical research, it is of great significance to understand the definition of MVI and the controversy over pathological grading. With reference to related articles, this article reviews the development history of the definition of MVI, analyzes the current status of the research on the criteria for pathological grading of MVI, and assesses the value of different criteria in predicting postoperative recurrence of HCC, so as to provide a reference for the clinical research on MVI.
ABSTRACT
The temperature pressure relationship of mixed gases in the autoclave was analyzed with Clausius Clapeyron equation, Boyle's law and Dalton's law of partial pressure Antoine equations discribing the P T relationship inside the autoclave with different residual air were built up according to data published and a method calculating the temperature from values of manometer was introduced The necessity to efflux the air from the autoclave was explained theoretically