Perianal Paget’s disease (PPD) is a rare intraepithelial adenocarcinoma of the anal margin. Primary PPD likely represents intra-epithelial neoplasm from an apocrine source, whereas secondary disease may represent “pagetoid” spread from an anorectal malignancy.
Histologic CDX-2 and CK20 are hallmark markers for colorectal-derived Paget’s cells. Interestingly, our primary PPD patient presented both positive and no internal malignancy was identified. In addition, a negative CK7 marker was observed in our case in contrast with previously reported. Surgical excision is the standard treatment; however, previous studies have demonstrated good response with Imiquimod 5% cream in patients with vulval extramammary Paget disease (EMPD). The efficiency of Imiquimod treatment for PPD has not been well described. Our PPD patient was successfully treated using Imiquimod 5% cream.
This study describes a primary cutaneous PPD patient CDX-2+/CK20+/CK7- without invasion of the dermis and no associated colorectal carcinoma effectively treated using topical Imiquimod therapy, suggesting that Imiquimod might potentially be considered as a first-line treatment for PPD.
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- Rare perianal extramammary Paget disease successfully treated using topical Imiquimod therapy
Jéssica Silva dos Santos
Gabriel Alves Bonafé
José Aires Pereira
Danilo Toshio Kanno
Carlos Augusto Real Martinez
Manoela Marques Ortega
- BioMed Central
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