Calcinosis cutis: critical review.

The most widely accepted classification of calcinosis cutis is reviewed and several aspects of it are examined. The main point of our criticism is that entities from different groups overlap. Also, the classification mixes etiopathogenic criteria with morphological or semiologic ones. Moreover, the role of the dermatopathologist is limited many times, since only generic information under the diagnosis "calcinosis cutis" is given to the clinician. Taking these into account, we introduce a possible morphological classification of calcinosis cutis, based on the pattern of the cutaneous deposits.