Simon focus

A Simon focus is a tuberculosis (TB) nodule that can form in the apex of the lung when a primary TB infection elsewhere in the body spreads to the lung apex via the bloodstream. Simon focus nodules are often calcified.

The initial lesion is usually a small focus of consolidation, less than 2cm in diameter and located within 1 to 2 cm of the apical pleura. In adolescence, Simon foci may become reactivated and develop into Assmann foci. Such foci are sharply circumscribed, firm, gray-white to yellow areas that have a variable amount of central caseation and peripheral fibrosis.

单词	Simon foci
释义	Simon foci 英语百科 Simon focus A Simon focus is a tuberculosis (TB) nodule that can form in the apex of the lung when a primary TB infection elsewhere in the body spreads to the lung apex via the bloodstream. Simon focus nodules are often calcified. The initial lesion is usually a small focus of consolidation, less than 2cm in diameter and located within 1 to 2 cm of the apical pleura. In adolescence, Simon foci may become reactivated and develop into Assmann foci. Such foci are sharply circumscribed, firm, gray-white to yellow areas that have a variable amount of central caseation and peripheral fibrosis.
随便看	hemipelagic deposit hemipelagic environment hemipelagic facies hemipelagic region hemipelagic sea hemipelagic sediment hemipelagic sediments hemipeloric hemipelvectomies hemipelvectomy hemipelvectomy prostheses hemipelvectomy prosthesis hemipelvectory hemipelves hemipelvis hemipenes hemipenis hemipenta hemipentacotyl hemipenthes jezensis Hemipeplidae hemipeptone hemipertrophy Hemiphacidiaceae hemiphaedusa amphileuca