Eccrine poroma is an uncommon benign adnexal tumor due to terminal ductal differentiation.Goldman et al. described it for the 1 st time in the literature. 1e major differences between eccrine poroma and ductal poroma are epidermal location and connection to epidermis in the former, while the latter is located in the deep dermis and not connected to epidermis.While eccrine poromas (EP) are commonly found on acral regions, Pigmented EP (PEP) is typically observed on non-acral sites, particularly in individuals with darker skin tones. 1,2ww.cosmoderma.org
Nikam et al. (Mon,) studied this question.