Surgical technique of staged single-port thoracoscopic R2 sympathicotomy for facial blushing. (A) Patient positioned in the beach-chair position or semi-Fowler position, seated at a 45° angle, with both arms spread out. (B) Marked incision just posterior to the axillary/mammary fold. (C) The positioning of the camera port and the cautery hook port through the same incision. (D) Thoracoscopic view of the right superior mediastinum with identification of the sympathetic nerve running along the neck of the ribs (R2–R4). (E) Thoracoscopic view after R2 sympathicotomy. (F) Double plastic-coated sticker placed over the incision site to prevent air re-entry. CP: camera port; HP: hook port; S: sympathetic nerve.