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. 2019 Apr 30;19:70. doi: 10.1186/s12903-019-0762-0

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© The Author(s). 2019

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 2 — Early diagnosis of OSCC recurrence through NBI. The inspection of this asymptomatic surgical scar (outcome of a second-intention healing), from a patient who had previously had surgery for OSCC, did not reveal suspicious areas – such as ulcers, lumps, red and/or white lesions - at BWL (left image). Still, it was biopsied due to an anomalous vascularization at NBI visualization (highlighted spot, middle image) which was classified as IPCL pattern IV (upper and lower [2] - right images). Histopathological examination showed a recurrence of OSCC