<prompt> All of the following perforating disorders are associated with chronic renal failure EXCEPT:Reactive perforating collagenosisCalciphylaxisElastosis perforans serpiginosaKyrle disease  <response>: Perforating disorders of skin characterized by transepidermal elimination of dermal connective tissue Example Perforating folliculitis Kyrle disease Elastosis perforans serpiginosa Reactive perforating collagenosis Acquired perforating dermatosisUsually associated with DM CRFCalciphylaxis is also seen in patient with CRF but not a perforating disorder 