Eccrine Poroma on the Face: An Atypical Presentation
A fifty-year-old woman presented with a slow-growing nodule over the left cheek for one and a half years. The lesion started as a tiny, 2 mm asymptomatic papule on the left cheek and gradually increased to 2 cm in size. There was no history of trauma, pre-existing skin lesion, or topical application at the site of the lesion. There was no family history of similar lesions.\nExamination revealed an ulcerated nodule with a peripheral hyperpigmented rim just lateral to the left nasolabial fold []. The lesion was about 1.5 cm in diameter, firm, mobile, non-tender, and did not bleed on touch. The local lymph nodes were not enlarged. Differential diagnoses considered were basal cell carcinoma, squamous cell carcinoma, amelanotic melanoma, and keratoacanthoma.\nExcision biopsy was performed, which surprisingly revealed broad anastomosing bands of uniform small cuboidal cells [], few ductal lumina, and narrow cystic spaces [] within the epidermis. Further, the cuboidal cells showed uneven cytoplasmic clearing []. The histological features clinched the diagnosis of an eccrine poroma. A few occasional mitoses were seen which suggested the requirement of a close follow-up in this patient.