“…Impairment of function may be so severe that a fatal uraemia ensues (Cantwell, 1954;Correa, 1954;Davidson et al, 1954) Hypercalcaemia may also cause band-shaped corneal opacities (Walsh and Howard, 1947;Cogan et al, 1948;Cases 1, 9, and 11), and calcification in tissues, such as the blood vessels, lungs, subcutaneous tissue, and joint capsules. In addition to these potential dangers, there is considerable doubt about the efficiency of ealciferol in the treatment of sarcoidosis.…”