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. 2020 Aug;83(2):404-411.
doi: 10.1016/j.jaad.2019.07.075. Epub 2019 Jul 30.

Increased risk of second primary hematologic and solid malignancies in patients with mycosis fungoides: A Surveillance, Epidemiology, and End Results analysis

Amrita Goyal  1 , Daniel O'Leary  2 , Kavita Goyal  3 , Nathan Rubin  4 , Kimberly Bohjanen  3 , Maria Hordinsky  3 , Steven T Chen  5 , Georgios Pongas  6 , Lyn M Duncan  7 , Aleksandr Lazaryan  8
Affiliations

Increased risk of second primary hematologic and solid malignancies in patients with mycosis fungoides: A Surveillance, Epidemiology, and End Results analysis

Amrita Goyal et al. J Am Acad Dermatol. 2020 Aug.

Abstract

Background: Mycosis fungoides (MF) is associated with increased risk of second primary hematologic malignancies, but its association with second primary solid tumors is less well characterized.

Objective: This retrospective analysis seeks to assess the risk of being diagnosed with a second primary hematologic or solid malignancy in patients with MF.

Design: We performed an analysis of patients diagnosed with MF from 2000 through 2015 in the United States cancer registries of SEER-18 (N = 6742).

Results: Relative risks were estimated by using standardized incidence ratios (SIRs). Among 6742 patients, there were 511 (7.5%) second cancer events (SIR, 10.15; 95% confidence interval [CI], 9.29-11.07). These included 184 (36.0%) hematologic malignancies (SIR, 39.71; 95% CI, 34.05-46.05) and 327 (64.0%) solid tumor malignancies (SIR, 7.33; 95% CI, 6.56-8.17). Patients with MF were at increased risk for non-Hodgkin lymphoma; Hodgkin lymphoma; melanoma; and lung, female breast, prostate, colon, and renal cancers. Females were at higher risk than males (P < .05). All ethnic groups showed a statistically significant elevation in SIRs. Elevation of SIRs was observed across all stages of MF.

Conclusions and relevance: Patients with MF are at increased risk for diagnosis of second primary malignancies and should be carefully screened for discernable signs and symptoms of second malignancies.

Keywords: CTCL; SEER; Surveillance Epidemiology and End Results; cutaneous T-cell lymphoma; cutaneous lymphoma; mycosis fungoides; non-Hodgkin lymphoma; second malignancy.

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Conflict of interest statement

Conflicts of interest: None disclosed.

Figures

Fig 1.
Fig 1.
Stratified standardized incidence ratios for all malignancies (A) by time from diagnosis of mycosis fungoides and (B) by patient age at diagnosis of mycosis fungoides. MF, Mycosis fungoides.
See this image and copyright information in PMC

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