Maghfour J, Genelin X, Olson J, Wang A, Schultz L, Blalock TW. The epidemiology of dermatofibrosarcoma protuberans incidence, metastasis, and death among various population groups: A Surveillance, Epidemiology, and End Results database analysis.
J Am Acad Dermatol 2024:S0190-9622(24)00956-3. [PMID:
38908718 DOI:
10.1016/j.jaad.2024.05.088]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 05/25/2024] [Accepted: 05/28/2024] [Indexed: 06/24/2024]
Abstract
BACKGROUND
Limited information exists regarding the epidemiology, metastasis, and survival of dermatofibrosarcoma protuberans (DFSP).
OBJECTIVE
To measure DFSP incidence and assess metastasis and survival outcomes.
METHODS
Incidence rate, overall and DFSP-specific survival outcomes for primary DFSP tumors contained in the Surveillance, Epidemiology, and End Results (SEER) registry were analyzed via quasi-Poisson regression, Cox, and competing risk analyses.
RESULTS
DFSP incidence rate was 6.25 (95% CI, 5.93-6.57) cases per million person-years with significantly higher incidence observed among Black individuals than White individuals (8.74 vs 4.53). DFSP with larger tumor size (≥3 cm, odds ratio [OR]: 2.24; 95% CI, 1.62-3.12; P < .001) and tumors located on the head and neck (OR: 4.88; 95% CI, 3.31-7.18; P < .001), and genitalia (OR: 3.16; 95% CI, 1.17-8.52; P = .023) were associated with significantly increased risk of metastasis whereas higher socioeconomic status was associated with significantly decreased risk of metastasis. Larger tumor size (≥3 cm), regardless of location, and age (≥60 years) were associated with significantly worse overall and cancer-specific survival.
LIMITATIONS
Retrospective design of SEER.
CONCLUSION
DFSP incidence is 2-fold higher among Black than White individuals. The risk of DFSP metastasis is significantly increased with tumor size ≥3 cm and tumors located on head and neck, and genitalia. Larger tumor size (≥ 3 cm), regardless of location, and age (≥60 years) are the most important prognostic indicators of survival.
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