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Unilateral versus Bilateral T3 Ganglionectomy in Primary Palmar Hyperhidrosis Patients
Beatrice Chia-Hui Shih1, Duk Hwam Moon1, Sungsoo Lee1
1Department of Thoracic and Cardiovascular Surgery, Gangnam Severance Hospital, College of Medicine, Yonsei University, Gangnam-gu, Seoul, Korea.
The Thoracic and Cardiovascular Surgeon
|September 11, 2025
Summary
Unilateral endoscopic thoracic sympathectomy (ETS) for primary palmar hyperhidrosis (PPH) offers higher patient satisfaction and significantly lower rates of compensatory hyperhidrosis (CH) compared to bilateral ETS.
Area of Science:
- Thoracic surgery
- Surgical outcomes
- Hyperhidrosis treatment
Background:
- Primary palmar hyperhidrosis (PPH) is a condition characterized by excessive hand sweating, significantly impacting patients' quality of life.
- Endoscopic thoracic sympathectomy (ETS), specifically T3 ganglionectomy, is a recognized treatment for PPH.
- A major concern with ETS is the risk of compensatory hyperhidrosis (CH), where sweating increases in other body areas post-surgery.
Purpose of the Study:
- To compare the incidence of compensatory hyperhidrosis (CH) and patient satisfaction between unilateral and bilateral T3 ganglionectomy for primary palmar hyperhidrosis (PPH).
- To evaluate the effectiveness of unilateral versus bilateral ETS in managing PPH symptoms.
- To identify potential differences in adverse effects, specifically CH, between the two surgical approaches.
Main Methods:
- A retrospective analysis of 118 patients with severe PPH who underwent either unilateral (n=41) or bilateral (n=77) T3 ganglionectomy.
- Data collected included patient characteristics, surgical outcomes, patient satisfaction, and incidence of CH at 3 months post-operation.
- Statistical analysis was performed to compare outcomes between the unilateral and bilateral ETS groups.
Main Results:
- Unilateral T3 ganglionectomy resulted in significantly higher patient satisfaction (93% very satisfied) compared to bilateral T3 ganglionectomy (61% very satisfied) (p < 0.001).
- The incidence of CH was substantially lower in the unilateral group (20% experienced CH) versus the bilateral group (57% experienced mild CH) (p = 0.007).
- Common CH areas included the back, thighs, chest, abdomen, and hips; 7.5% in the unilateral group showed contralateral sweating improvement, with 22% eventually needing contralateral ganglionectomy.
Conclusions:
- Unilateral T3 ganglionectomy for PPH is associated with superior patient satisfaction and a significantly reduced risk of compensatory hyperhidrosis compared to bilateral T3 ganglionectomy.
- These findings suggest that unilateral ETS may be the preferred surgical option for patients aiming for better symptom relief and fewer adverse effects.
- Further long-term studies are warranted to definitively confirm the long-term efficacy and safety of unilateral ETS in managing PPH.

