In the article “Primary Leiomyosarcoma in the Inferior Vena Cava Extended to the Right Atrium: A Case Report and Review of the Literature” by S. Fujita et al. [Case Rep Oncol 2016;9: 599–609, DOI 10.1159/000450598], the explanation of the colors of the graphs in Figure 4 should be as follows:
Fig. 4.
Kaplan-Meier curve of the survival of the patients reported on in the past 10 years. a Subcategorized according to whether surgery had been performed or not. Patients who had undergone surgery had a significantly improved prognosis when compared with their counterparts who had not been surgically treated. b Subcategorized according to the year of publication. p values were obtained with the log-rank test.