Tumoral Calcinosis in Infancy. A light and electron microscopic study with X-ray microanalysis.

The most frequent form of idiopathic calcinosis is tumoral calcinosis (TC) which rarely occurs at young ages. We describe here a TC case of a young boy with its light microscopy completed with electron microscopic examinations. X-ray microanalysis revealed in the intracellular crystals CaCl2 besides the previously described hydroxyapatite. The significance of this finding is unknown at the moment.