[The mineral phase of Malherbe's calcifying tumor].
The mineral phase of a calcified tumour of Malherbe (pilomatrixoma) was studied using microradiography, chemical analysis and X-ray diffraction. It was compared with the mineral phase of a piece of human mandibular bone from a matched subject with respect to age and sex. The main part of the mineral phase of the pilomatrixoma belonged to the biological apatite system; an additional whitlockite phase was found. In the homogeneous areas of the tumour, the radioopacity was similar to that of bone.
D002118:Calcium / Q000032:analysis; D002130:Calcium Phosphates / Q000032:analysis; D055598:Chemical Phenomena; D002621:Chemistry; D006801:Humans; D006882:Hydroxyapatites / Q000032:analysis; D008274:Magnesium / Q000032:analysis; D008334:Mandible / Q000032:analysis; D008852:Microradiography; D010758:Phosphorus / Q000032:analysis; D012878:Skin Neoplasms / Q000032:analysis*; D014961:X-Ray Diffraction
D002130:Calcium Phosphates; D006882:Hydroxyapatites; C021767:whitlockite; D010758:Phosphorus; D008274:Magnesium; D002118:Calcium
Etude de la phase minérale de la tumeur calcifiée de Malherbe.