Pedunculated Acral Keratotic Papule on an Ischemic Foot.

An 86-year-old man presented with a slowly enlarging, subject to chronic mechanical irritation, pedunculated keratotic papule on the plantar tip of the right hallux in the setting of severe peripheral arterial disease. Excision was deferred until after endovascular revascularization to reduce the risk of nonhealing and limb complications, after which the lesion was removed without wound sequelae. Histopathology demonstrated a conical papule with a central collagenous core and an overlying cap of compact hyperkeratosis. This case highlights key clinicopathologic features that distinguish acral keratotic tumors and underscores the importance of perfusion optimization when planning elective excision on an ischemic limb.