<prompt> Which of the following is FALSE regarding cutaneous calciphylaxis?Potentially lethal conditionExemplifies dystrophic calcificationCharacterized by progressive cutaneous vascular calcificationIncludes increased calcium, phosphate, and parathor- mone patients with chronic renal failure  <response>: Ans. b Exemplifies dystrophic calcification Ref. Harrisons medicine 18thpg. Ch. 280CUTANEOUS CALCIPHYLAXIS Calciphylaxis, an rare, potentially lethal condition characterized by progressive disseminated cutaneous, vascular and soft tissue calcification. It is seen principally in the setting of Chronic renal failure-associated hyperparathyroidism. It presents with painful, violaceous, mottled lesions of the extremities andor trunk that progress to skin and subcutaneous tissue necrosis, non-healing ulcers, and gangrene. Treatment: Timely parathyroidectomy. 