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  • Title: Digital clubbing as an unusual complication associated with severe secondary hyperparathyroidism: report of two cases.
    Author: Grekas D, Avdelidou A.
    Journal: Hemodial Int; 2007 Apr; 11(2):193-7. PubMed ID: 17403170.
    Abstract:
    Digital clubbing due to secondary hyperparathyroidism has been described as an unusual complication among patients with chronic kidney disease undergoing maintenance hemodialysis therapy. Although the pathogenesis of digital clubbing is unknown, certain growth factors such as platelet-derived growth factor and hepatocyte growth factor have been associated with this clinical syndrome. Two patients of our renal unit population presented this unique clinical feature bilaterally, among the other clinical findings of severe secondary hyperparathyroidism. Both patients were subjected to parathyroidectomy. Histological examination revealed diffuse hyperplasia of parathyroid glands. Despite the improvement of clinical symptoms and laboratory findings of secondary hyperparathyroism after parathyroidectomy, digital clubbing remained unchanged.
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