A Dilated Pore of Winer on the Thigh: Clinical and Histopathological Correlation

Dilated pore of Winer (DPW) is a benign follicular adnexal tumor that typically occurs in middle-aged and elderly individuals, most commonly on the face and neck. Rarely, it can present at unusual sites or in younger patients, leading to diagnostic challenges. We present the case of a 28-year-old female with a solitary, asymptomatic, comedo-like lesion on the right thigh that had been slowly enlarging over two years. Histological evaluation following surgical excision demonstrated a dilated follicular infundibulum filled with keratin and lined by acanthotic epithelium with radiating strands, consistent with DPW. The lesion was completely excised without any complications. This report expands the clinical spectrum of DPW by illustrating its occurrence in a young adult at an uncommon site and highlights the importance of histopathology in confirming the diagnosis.