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Yin S, Xu L, Wang S, Feng J, Liu L, Liu G, Wang J, Zhan S, Zhao Z, Gao P. Prevalence of extramammary Paget's disease in urban China: a population-based study. Orphanet J Rare Dis 2021; 16:134. [PMID: 33731175 PMCID: PMC7972239 DOI: 10.1186/s13023-021-01715-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 01/26/2021] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Extramammary Paget's disease (EMPD) is an intraepithelial adenocarcinoma. The chronic relapsing clinical course and unbearable clinical symptoms of extramammary Paget's disease usually result in a markedly diminished quality of life. No national data are available on descriptive epidemiology of EMPD in China, the most populous country over the world. This population-based study aimed to estimate the prevalence and associated sex and age patterns of EMPD in China. METHODS This study was conducted using data from China's Urban Employee Basic Medical Insurance and Urban Resident Basic Medical Insurance, covering approximately 0.43 billion Chinese urban residents in 2016. Patients with EMPD were identified based on the diagnostic names and codes in claim data. RESULTS A total of 53 males and 31 females with EMPD were found. The crude prevalence in 2016 was 0.04 per 100,000 population [95% confidence interval (CI) 0.02-0.06], ranging from 0.01 (95% CI 0.00-0.02) in North or Northeast China to 0.08 (95% CI 0.03-0.16) in Southwest China. The rate was higher in males (0.05, 95% CI 0.03-0.08) compared with females (0.03, 95% CI 0.02-0.05). The mean age of patients was 65.87 (standard deviation: 14.21) years, with the peak prevalence appeared in patients aged 70-79 (0.28, 95% CI 0.16-0.42). CONCLUSIONS The prevalence of EMPD was markedly lower than those in the United States and Europe, and varied across regions in China. Chinese patients were much younger, with significant male predominance. Further studies are warranted to examine potential pathophysiologic mechanism.
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Affiliation(s)
- Shilu Yin
- Department of Plastic Surgery, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China
| | - Lu Xu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, 38 Xueyuan Road, Haidian District, Beijing, 100191, China
| | - Shengfeng Wang
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, 38 Xueyuan Road, Haidian District, Beijing, 100191, China.
| | - Jingnan Feng
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, 38 Xueyuan Road, Haidian District, Beijing, 100191, China
| | - Lili Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, 38 Xueyuan Road, Haidian District, Beijing, 100191, China
| | - Guozhen Liu
- Peking University Health Information Technology Co. Ltd, 52 North Fourth Ring West Road, Haidian District, Beijing, 100080, China
| | - Jinxi Wang
- Shanghai Songsheng Business Consulting Co. Ltd, 6 Chaoyang Men North street, Dongcheng District, Beijing, 100000, China
| | - Siyan Zhan
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, 38 Xueyuan Road, Haidian District, Beijing, 100191, China.
- Research Center of Clinical Epidemiology, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China.
- Center for Intelligent Public Health, Institute for Artificial Intelligence, Peking University, 38 Xueyuan Road, Haidian District, Beijing, 100191, China.
| | - Zhenmin Zhao
- Department of Plastic Surgery, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China.
| | - Pei Gao
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, 38 Xueyuan Road, Haidian District, Beijing, 100191, China.
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