Eccrine poroma presented as spindle-shaped plaque

Rationale: Eccrine poroma, a benign cutaneous neoplasm originating from the intraepidermal portion of the eccrine sweat duct, is relatively common in clinical practice. Nevertheless, the 1 presenting as spindle-shaped plaque is extremely rare and easily misdiagnosed as seborrheic keratosis or other dermatoses. Thus, the current study demonstrates a case of eccrine poroma with unique clinical manifestation. Patients concerns: A 47-year-old man presented with a spindle-shaped plaque on his left sole for 6 years. Diagnoses: Based on the clinical and histopathological manifestations, diagnosis of eccrine poroma was established. Interventions: Surgical excision under local anesthesia was performed. Outcomes: No recurrence or malignant transformation occurred within 6-month follow-up. Lessons: Eccrine poroma typically presents as a dome-shaped nodule on palm or sole. But this case reminded us the lesion presenting as a spindle-shaped plaque on sole can not rule out the possibility of eccrine poroma.