Dermoscopy of a non-pigmented eccrine poroma
Abstract
Eccrine poroma is a benign adnexal tumor arising from cells of the outer layer of the acrosyringium and upper dermal eccrine duct. It generally appears as a solitary, slow growing, sessile, pink-to-red and well-circumscribed papule, plaque or nodule. It is usually located on the palms and soles but it may also develop on other locations. Its clinical appearance can resemble other types of tumors such as hypo- or amelanotic melanoma. Dermoscopy has improved the evaluation of skin tumors. In the case of eccrine poroma, there are some studies that have described its dermoscopic findings. These mainly focus on its vascular structures. We present an 82-year-old patient who developed a 2×3-cm eccrine poroma on his lower back. Dermoscopy demonstrated the presence of a polymorphous vascular pattern displaying mostly linear looped (irregular hairpin-like) and “leaf-flower-like” vessels (“cherry-blossom” and “chalice-like”), with some resembling “cactus-like” structures. Only a few linear coiled (glomerular) and linear helical (corkscrew) vessels were observed. Some of these vascular structures were surrounded by a whitish-to-pink halo. Moreover, some pink structureless areas were present. We highlight the finding of the “leaf-flower-like” vessels, as these are vascular structures that have not been described in other types of skin tumors.
References
Brenn T, McKee PH. Tumors of the sweat glands. 3rd ed. In: McKee PH, Calonje E, Granter S (editors). Pathology of the skin. Philadelphia: Elsevier Mosby; 2005. p. 1619–1621.
McCalmont TH. Adnexal neoplasms. 3rd ed. In: Bolognia JL, Jorizzo JL, Schaffer JV (editors). Dermatology. Phil-adelphia: Elsevier Saunders; 2012. p. 1841–1842.
Nicolino R, Zalaudek I, Ferrara G, Annese P, Giorgio CM, et al. Dermoscopy of eccrine poroma. Dermatology 2007;
(2): 160–163. doi: 10.1159/000104270.
Ferrari A, Buccini P, Silipo V, De Simone P, Mariani G, et al. Eccrine poroma: A clinical-dermoscopic study of seven cases. Acta Derm Venereol 2009; 89(2): 160–164. doi: 10.2340/00015555-0608.
Sgouros D, Piana S, Argenziano G, Longo C, Moscarella E, et al. Clinical, dermoscopic and histopathological fea-tures of eccrine poroid neoplasms. Dermatology 2013; 227(2): 175–179. doi: 10.1159/000354152.
Domínguez Espinosa AE, Carlos Ortega B, Quiñones Venegas G, González Ramirez R. Dermoscopy of non- pigmented eccrine poromas: Study of Mexican cases. Dermatol Pract Concept 2013; 3(1): 25–28. doi: 10.5826/dpc.0301a07.
Zalaudek I, Kreush J, Giacomel J, Ferrara G, Catricala C, et al. How to diagnose non-pigmented skin tumors: A re-view of vascular structures seen with dermoscopy. Part I. Melanocytic skin tumors. J Am Acad Dermatol 2010; 63(3): 361–374. doi: 10.1016/j.jaad.2009.11.698.
Zalaudek I, Kreush J, Giacomel J, Ferrara G, Catricala C, et al. How to diagnose non-pigmented skin tumors: A re-view of vascular structures seen with dermoscopy. Part II. Nonmelanocytic skin tumors. J Am Acad Dermatol 2010; 63(3): 377–386. doi: 10.1016/j.jaad.2009.11.697.
Altamura D, Piccolo D, Lozzi GP, Peris K. Eccrine poroma in an unusual site: A clinical and dermoscopic simulator of amelanotic melanoma. J Am Acad Dermatol 2005, 53(3): 539–541. doi: 10.1016/j.jaad.2005.02.057.
Aydingoz EI. New dermoscopic vascular patterns in a case of eccrine poroma. J Eur Acad Dermatol Venereol 2009; 23(6): 725–726. doi: 10.1111/j.1468-3083.2009.03182.x.
Shalom A, Schein O, Landi C, Marghoob A, Carlos B, et al. Dermoscopy findings in biopsy-proven poromas. Dermatol Surgery 2012; 38(7 pt 1): 1091–1096. doi: 10.1111/j.1524-4725.2012.02407.x..
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