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Previous Volume 350:943 February 26, 2004 Number 9 Next

	Since this article has no abstract, we have provided an extract of the first 100% of the full text and any section headings.

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To the Editor: I wish to point out that our report on early malignant progression of hereditary medullary thyroid cancer (Oct. 16 issue)¹ contains a description of clinical material from 50 patients, of the 207 patients overall, that was also included in an article previously published in Surgery.² Although asked to do so, we failed to inform the editors of each journal of the publication of these data in the other journal. We apologize for not having provided this information earlier.

Andreas Machens, M.D.
Martin-Luther-Universität Halle-Wittenberg
D-06097 Halle (Saale), Germany
gensurg@medzin.uni-halle.de

1. Machens A, Niccoli-Sire P, Hoegel J, et al. Early malignant progression of hereditary medullary thyroid cancer. N Engl J Med 2003;349:1517-1525. [Free Full Text]
2. Machens A, Holzhausen HJ, Thanh PN, Dralle H. Malignant progression from C-cell hyperplasia to medullary thyroid carcinoma in 167 carriers of RET germline mutations. Surgery 2003;134:425-431. [CrossRef][Medline]