21 November 2002
Acute digital gangrene in a long-term dialysis patient - a diagnostic challenge.Giorgina Barbara Piccoli, Marco Quaglia, Pietro Quaglino, Manuel Burdese, Francesca Bermond, Elisabetta Mezza, Alberto Jeantet, Giuseppe Paolo Segoloni
Med Sci Monit 2002; 8(11): CS83-89 :: ID: 4830
BACKGROUND: Vascular complications are frequent in long-term dialysis patients. The differential diagnosis is complex and includes immunological derangement (underlying disease, uremia), vasculopathic-atheroembolic diseases, calciphylaxis, infections, neoplasm, coagulation disorders, and adverse drug effects. CASE REPORT: We report on a 50-year-old male patient with a long follow-up on renal replacement therapy (20 years), currently on daily hemodialysis. The patient's history of kidney transplantation was complicated by seven acute rejection episodes and by Kaposi sarcoma; comorbidity included HLA-B27 positive ankylosing spondylitis, diffuse vascular disease, recurrent atrial fibrillation, chronic hypotension, HCV positivity. Ten days after the start of warfarin for an atrial fibrillation episode, the patient developed digital necrotising ulcerations, rapidly evolving into partial symmetric digital gangrene at distal phalanxes. The timing and evolution of the lesions and the finding of protein S deficiency were the clues for diagnosing warfarin-induced skin necrosis (WISN); the drug was discontinued and therapy with low-molecular weight heparin, plasma and prostacyclin achieved slow resolution of lesions. CONCLUSIONS: According to a combined MEDLINE and EMBASE search, this is the first report of WISN in a hemodialysis patient: underlining the clinical relevance of this uncommon problem, this case exemplifies the difficult differential diagnosis of acute vascular skin lesions in dialysis patients.
Keywords: Dialysis - adverse effects, Fingers - pathology, Gangrene - diagnosis, HLA-B27 Antigen - metabolism, Renal Replacement Therapy - adverse effects, Spondylitis, Ankylosing - complications
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