ULTRASTRUCTURE OF PSAMMOMA BODIES OF MENINGIOMA IN TISSUE-CULTURE

  • 1 January 1979
    • journal article
    • research article
    • Vol. 103  (13) , 670-675
Abstract
An 8-day-old tissue culture of a human meningioma was studied by EM. Psammoma bodies were detected in all stages of evolution, affording a unique opportunity for observing the genesis of these structures. Matrix vesicles appeared instrumental in the calcification of a granular extracellular material. Although matrix vesicles are described in physiologic and pathologic calcification, they were not previously reported in the very few ultrastructural studies of psammoma bodies in meningiomas.