The condition in which calcium salts are deposited in the skin and subcutaneous tissue is referred to as calcinosis cutis. This article contains a report of two cases of the idiopathic form of that disease plus the conclusions drawn from a study of sixteen additional cases taken for the most part from the available English and American literature.1 The first of the two patients whose cases are reported was observed by Piersall in 1929, and his findings at that time were recorded.1a
In preparing this paper, every attempt was made to exclude cases of myositis ossificans, osteoma of the skin, phlebolith, calcified tumor, atheroma, cyst, hematoma or tuberculous lesion and cases in which parasites (Trichinella, Filaria, etc.) were present in the tissues. Examples of metastatic calcification, as in osteomyelitis, metastatic malignant growth and parathyroid adenoma, were also omitted. Cases in which the disease was associated with scleroderma,