Two case reports (Marketkar et al., 2016 and Akkalp et al., 2015) share the same writing format and appear to have the same literature review. One might argue that because the cancer described is extremely rare, a literature search would result in the same set of articles. However, having an identical table without citing the source raises concerns.
If you see other similarities or have thoughts, please share.
References:
Marketkar, S.P., Hossain, T., Lawrence, W.D., and Quddus, M.R., 2016. Primary Signet-ring Cell Carcinoma of the Uterine Corpus: A Case Report and Review of the Literature. American Journal of Medical Case Reports, 4(2), pp.51-54.
Akkalp, A.K., Ozyurek, E.S., Tetikkurt, U.S., Yalcin, S., Koy, Y., and Usta, A.T., 2015. Primary Endometrial Adenocarcinoma with Signet‐Ring Cells: A Rarely Observed Case and Review of the Literature. Case Reports in Obstetrics and Gynecology, 2015(1), p.404692.