AI Article Synopsis
- Extramammary Paget disease (EMPD) is a rare skin cancer with varying survival outcomes; this study aimed to identify clinical and demographic factors impacting overall survival.
- Data from 2001 patients were analyzed, focusing on factors like tumor location, concurrent cancers, treatment methods, and basic demographics.
- Results revealed that vaginal EMPD had a higher mortality rate compared to vulvar EMPD, and factors such as distant metastasis, older age, and male gender were associated with increased mortality, while surgery improved survival outcomes.
Article Abstract
Background: Extramammary Paget disease (EMPD) is a rare malignant dermatosis with poorly defined outcomes. We investigated clinical characteristics of invasive EMPD at different anatomic sites and by subject demographics to determine prognostic factors for overall survival (OS).
Methods: All patient data were collected from the Surveillance, Epidemiology, and End Results (SEER) program, 1973-2013, of the U.S. National Cancer Institute. Patients with invasive EMPD of skin, vulva/labia, vagina, scrotum/penis, or other sites were included. After excluding patients with unknown radiation status, data of 2001 patients were analyzed. Primary endpoint was EMPD mortality by anatomic sites. Independent variables included patients' demographic data, concurrent malignancy (ie, non-EMPD related cancers), tumor size, distant metastasis, and surgery and/or radiation or not.
Results: Multivariate regression analysis showed that mortality was significantly higher in patients with vaginal EMPD than in patients with vulvar/labial EMPD (adjusted hazard ratio [aHR] = 3.26, p < 0.001). Patients with distant metastasis had higher mortality than those without (aHR = 3.36, p < 0.001). Patients who received surgery had significantly lower mortality than those who did not receive surgery (aHR = 0.77, p = 0.030), and those treated with radiation had significantly higher mortality than those who did not receive radiation (aHR = 1.60, p = 0.002). Older age was associated with significantly increased mortality (aHR = 1.09, p < 0.001), and mortality was significantly higher in males than in females (aHR = 1.42, p = 0.008).
Conclusions: In conclusion, among EMPD patients, mortality is higher in patients with vaginal EMPD than in those with vulvar/labial EMPD and higher in those who are older, those with concurrent malignancy or distant metastasis. Mortality is also higher in males than in females. Surgery is a protective factor and radiation is a risk factor for OS. Greater understanding of EMPD clinical characteristics, and considering EMPD in differential diagnosis of chronic genital and perianal dermatoses may provide support for early EMPD diagnosis and definitive surgical treatment.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5894213 | PMC |
| http://dx.doi.org/10.1186/s12885-018-4257-1 | DOI Listing |
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