Eccrine Porocarcinoma Presenting with Unusual Clinical Manifestations: A Case Report and Review of the Literature

Department of Dermatology, Kyunghee University Hospital at Gangdong, Seoul, Korea.
Annals of Dermatology (Impact Factor: 1.39). 09/2011; 23 Suppl 1(Suppl 1):S79-83. DOI: 10.5021/ad.2011.23.S1.S79
Source: PubMed


Eccrine porocarcinoma is a rare neoplasm that originates from the intraepidermal ductal portion of the eccrine sweat gland, and it usually occurs on the pre-existing lesion of benign eccine poroma. Its occurrence is more common in females and elderly persons. We present a case of a 44-year-old man who suffered from eccrine porocarcinoma, which developed on the right scrotum and pelvic area with metastases to the lung, adrenal gland, esophagus, ureter, and distant lymph nodes. Here we report on a unique case of eccrine porocarcinoma that developed primarily on the scrotum, which is an uncommon site, and showed rapid metastasis to the internal organs.

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    ABSTRACT: Background: Eccrine poroma (EP) belongs to the group of benign adnexal tumors, but cases of eccrine porocarcinoma (EPC) arising on long-standing and untreated EP suggest a certain risk of malignant transformation. Objectives: To describe the clinical, dermoscopic and histopathologic features associated with different extremes in the spectrum of eccrine poroid neoplasms and to review the according literature. Methods: A retrospective analysis of patient characteristics and morphologic features associated with EP, EPC in situ and invasive porocarcinoma patients who attended two skin lesion clinics in Italy and Turkey between 2010 and 2011. Results: A total of 4 cases including 1 EP, 1 EPC in situ and 2 cases of invasive EPC in 4 patients were analyzed. Recent changes including bleeding, ulceration and sudden enlargement of a pre-existing lesion were associated with malignant transformation. Dermoscopically, polymorphous vessels consisting of coiled, hairpin and linear vessels were seen at all stages of progression. Histopathological findings of EPC in situ were limited to the epidermal component and were evident only at higher magnification. Conclusions: Clinicians and pathologists should carefully evaluate EPs with a recent history of change and erosion in order to avoid overlooking the potential development of EPC. © 2013 S. Karger AG, Basel.
    Dermatology 09/2013; 227(2). DOI:10.1159/000354152 · 1.57 Impact Factor
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    Archives of Plastic Surgery 01/2014; 41(1):91-3. DOI:10.5999/aps.2014.41.1.91

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