Retraction Note to: Journal of Medical Systems (2019) 43: 251 https://doi.org/10.1007/s10916-019-1356-8

The Editor-in-Chief has retracted this article. After publication, concerns were raised regarding text and data similarities between this article and a previously published article by other authors on thyroid nodules [1]. Additionally, the article refers to a database that does not appear to contain ultrasound images of ovaries, but those of thyroid nodules. A number of cited references also refer to thyroid rather than ovarian lesions and appear to be misrepresented in the article. A further check by the Publisher has also identified inconsistencies in the sample numbers in Table 1.

The authors have not responded to these concerns. The Editor-in-Chief therefore no longer has confidence in the presented data and the authenticity of this article.

None of the authors have responded to any correspondence from the editor or publisher about this retraction.