[Multiple chondroma affecting the spine: spondylo-enchondroplasia and other forms (author's transl)].

When reviewing the published literature on constitutional bone diseases, for inclusion in a data-processing system, the authors discovered six cases of enchondroplasia affecting the spine. Similar observations have been reported under the name of spondylo-enchondroplasia. Radiological signs and genetic information suggest that this group of affections is a heterogenous one. Vertebral lesions vary greatly in extent, reaching in some case the level of a spheno-occipital synchondrosis.