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Expression of Concern regarding Sudbø et al., N Engl J Med 2004;350(14):1405-1413.

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

	Full Text PDF PDA Full Text Sudbø 2001 Sudbø 2004 Editorial by Curfman, G. D. Add to Personal Archive Add to Citation Manager Notify a Friend E-mail When Cited E-mail When Letters Appear PubMed Citation

In the issue of April 26, 2001, we published a study by Jon Sudbø et al.¹ Figures 3B and 3C of that article, which purport to represent two different patients and stages of oral epithelial dysplasia, are in fact different magnifications of the same photomicrograph. Because the results of another study by Dr. Sudbø,² published in the issue of April 1, 2004, were derived from the same subjects followed through the same database, we have similar concerns. We have informed the director of Dr. Sudbø's institution, the Radiumhospitalet in Oslo, Norway, and await the results of his investigation.

Source Information

This editorial was published on January 20, 2006, at www.nejm.org.

1. Sudbø J, Kildal W, Risberg B, et al. DNA Content as a Prognostic Marker in Patients with Oral Leukoplakia. N Engl J Med 2001;344:1270-1278. [Free Full Text]
2. Sudbø J, Lippman SM, Lee JJ, et al. The Influence of Resection and Aneuploidy on Mortality in Oral Leukoplakia. N Engl J Med 2004;350:1405-1413. [Free Full Text]

This article has been cited by other articles:

• Curfman, G. D., Morrissey, S., Drazen, J. M. (2006). Retraction: Sudbo J et al. DNA Content as a Prognostic Marker in Patients with Oral Leukoplakia. N Engl J Med 2001;344:1270-8 and Sudbo J et al. The Influence of Resection and Aneuploidy on Mortality in Oral Leukoplakia. N Engl J Med 2004;350:1405-13. NEJM 355: 1927-1927 [Full Text]  
• Sox, H. C., Rennie, D. (2006). Research Misconduct, Retraction, and Cleansing the Medical Literature: Lessons from the Poehlman Case. ANN INTERN MED 144: 609-613 [Abstract] [Full Text]