Goyal A, O'Leary D, Goyal K, et al. - In this retrospective analysis, researchers evaluated the risk of being diagnosed with a second primary hematologic or solid malignancy in 6,742 patients with mycosis fungoides (MF) in the United States cancer registries of SEER-18. Utilizing standardized incidence ratios, relative risks were estimated. Investigators found that MF patients were at higher danger of non-Hodgkin lymphoma, Hodgkin lymphoma, melanoma, lung, female breast, prostate, colon, and renal cancer. Findings revealed that there was a higher risk among females vs males. Based on the results of this study, an increased risk of a diagnosis of second primary malignancies was observed in MF patients and they should be assessed for apparent signs and symptoms of second malignancies.