Sawaya JL, Khachemoune A: Poroma: a review of eccrine, apocrine, and malignant forms. Int J Dermatol53: 1053, 2014.2469750110.1111/ijd.12448http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000340575100014&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=b7bc2757938ac7a7a821505f8243d9f3)| true
Al-Qattan MM, Al-Turaiki TM, Al-Oudah N, et al: Benign eccrine poroma of the dorsum of the hand: predilection for the nail fold and P53 positivity. J Hand Surg Eur Vol34: 402, 2009.http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000268043100025&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=b7bc2757938ac7a7a821505f8243d9f31945791210.1177/1753193408099830)| true
Noh S, Jin S, Lee N, et al: Eccrine poroma clinically mimicking ingrowing toenail complicated with granulation tissue. Ann Dermatol25: 247, 2013.10.5021/ad.2013.25.2.247http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000319548400022&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=b7bc2757938ac7a7a821505f8243d9f323717023)| true
Eccrine poroma is a rare benign adnexal neoplasm originating from a portion of the intraepidermal eccrine sweat gland duct and the acrosyringium. Typically, the lesions are asymptomatic, slow-growing nodules, which may be found in any sweat gland–bearing area. Multiple red lacunae, glomerular vessels, hairpin vessels, flower- and leaf-like vascular patterns, a polymorphic vascular pattern, globule/lacunae–like structures, a frog egg–like appearance, and comedo-like openings have been defined as characteristic dermoscopic patterns of the disease. We report a case of eccrine poroma in an unusual periungual and subungual location mimicking ingrown toenails. The dermoscopic findings of the lesions were compatible with those of eccrine poromas located in areas other than the periungual area. Recurrence was observed after the first excisional biopsy. There was no recurrence 10 months after the second surgical intervention, and near-complete regrowth of the nail plate was achieved. Eccrine poroma should be considered as a differential diagnosis in the presence of slow-growing, erythematous, painful, hemorrhagic papular lesions located in the periungual area in conjunction with a prediagnosis of ingrown toenails and malignant processes.
Corresponding author: Nebahat Demet Akpolat, MD, Department of Dermatology, Beykoz State Hospital, Istanbul, 34000, Turkey. (E-mail: firstname.lastname@example.org)