| ORIGINAL ARTICLE |
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| Year : 2022 | Volume
: 40
| Issue : 2 | Page : 100-107 |
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Extramammary Paget's disease: A retrospective study in a medical center in Taiwan
Chia-Hsien Yen1, Chih-Hung Lee1, Ji-Chen Ho2
1 Department of Dermatology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
2 Department of Dermatology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung; Department of Dermatology, Chang Gung Memorial Hospital, Chiayi, Taiwan
Correspondence Address:
Dr. Ji-Chen Ho
No. 123, Dapi Road, Niaosong District, Kaohsiung City 83301
Taiwan
 Source of Support: None, Conflict of Interest: None
DOI: 10.4103/ds.ds_19_22
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Background: Extramammary Paget's disease (EMPD) is a rare malignancy occurring on apocrine sweat gland-bearing skin with occasional association with internal cancers. Its epidemiological characteristics are different between populations in Asian and Western countries. Objectives: The aim of this study was to report the clinical experience of EMPD in a single medical center in Taiwan, compare our results with previous literature, and provide strategies for diagnostic workup. Methods: Medical records and biopsies of 34 Taiwanese patients with EMPD, treated in a single medical center in Kaohsiung, Taiwan, from January 2000 to December 2019, were reviewed. The clinicopathological features, biological behavior, management, and follow-up courses of these patients were analyzed. Results: We found a male predominance in our 34 patients with EMPD, and most patients were diagnosed in their 70s. Only four patients (11.8%) had an associated malignancy while the rest had a primary cutaneous lesion. Most patients (22, 64.7%) underwent wide excision (22, 64.7%), with the rest adopting other various therapeutic modalities. The 5-year overall survival rate was 76.5%, and the statistically significant prognostic factors for survival were lymph node involvement (P < 0.001) and dermal invasion (P = 0.022). Conclusion: In summary, this single-center study described the clinical and histopathologic features of patients with EMPD in Taiwan with a review of literature. We also proposed a complete systemic workup when the diagnosis was made and an extended follow-up period as long as 5 years after the initial treatment.
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