PMID: 10524574Oct 19, 1999Paper

Basal calcitonin levels and the response to pentagastrin stimulation in patients after kidney transplantation or on chronic hemodialysis as indicators of medullary carcinoma

Thyroid : Official Journal of the American Thyroid Association
H KotzmannH Vierhapper


Plasma concentrations of calcitonin (hCT) were determined in 150 patients with chronic renal failure on chronic hemodialysis therapy (CHD) and in 800 patients after successful kidney transplantation (KT). Basal hCT concentrations exceeded 10 pg/mL in 44 of 150 patients (29%) with CHD and in 48 of 800 (6%) in patients with KT. Among these patients with elevated basal hCT, pentagastrin-stimulated concentrations of hCT exceeded 100 pg/mL in 4 patients with CHD and in 7 with KT. Thyroidectomy was performed in 8 patients (5 with KT, 3 with CHD) revealing the presence of medullary thyroid carcinoma (MTC) (n = 2) or of C-cell hyperplasia (n = 6). Two patients with C-cell hyperplasia had the neoplastic form of this disorder. One patient with MTC and 1 with C-cell hyperplasia also presented a papillary microcarcinoma. Stimulated concentrations of hCT were only moderately elevated in the remaining 3 patients and follow-up rather than surgery was deemed appropriate due to their concomitant severe medical problems. In conclusion, basal concentrations of hCT higher than 10 pg/mL are more common in patients with CHD (29%) and after successful KT (6%) than previously described in patients with thyroid nodular disease (3%). In spite of various...Continue Reading


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