Outcome of Bilateral Thoracoscopic Sympathectomy for Patients with Primary Focal Hyperhidrosis

"Bilateral thoracoscopic sympathectomy will be performed with general anesthesia, using single lung ventilation and monopolar cautery for transection of the sympathetic chain.~Persons with PFH who underwent the BTS were classified into three groups, depending the level of transaction of sympathetic chain:~1. transection at the level from the second to the forth thoracic sympathetic ganglion (T2- T4);~2. transection at the level from the third to the forth thoracic sympathetic ganglion (T3-T4)~3. transection at the level from the second to the third thoracic sympathetic ganglion (T2-T3).."