Pigmented eccrine poroma: report of an atypical case with the use of\ndermoscopy
A female, 36-year-old patient, of mixed race, homemaker, with history of asymptomatic\nlesion in the palm of her right hand for 3 years. During the examination a dark papule,\nof firm, marked consistency, well-defined contour and anfractuous surface, measuring\naround 0.5 cm diameter was observed in the right palmar region ( and ).\nDermoscopy revealed a white-gray area; black dots; polymorphic vascular structures and\nbluish-red gaps ( and ). There were no pseudopods, webs or pigmental\nstriae.\nHistopathology revealed proliferation of uniform cuboid cells with light-colored\ncytoplasm and evident intercellular bridges (). There was also hyperkeratosis, melanin pigments and abundantly\nvascularized stroma, aspects that are compatible with pigmented eccrine poroma (PEP).\nThere were no alterations suggestive of malignancy (). After diagnostic confirmation, the lesion was surgically\nremoved.