Efficacy and safety of portable ultrasound-guided pingyangmycin sclerotherapy for deep-seated oral and maxillofacial venous malformations: a retrospective observational study.
Wang Q, Sun X, et al. • Frontiers in neurology • 2026
Portable ultrasound-guided pingyangmycin sclerotherapy is a feasible and well-tolerated outpatient-based procedure for patients with deep-seated oral and maxillofacial venous malformations.
Key Findings
Results
All 49 outpatients experienced symptom relief after portable ultrasound-guided pingyangmycin sclerotherapy, with a significant drop in global discomfort NRS scores.
Median post-treatment NRS score was 0 (range, 0-1), compared with a median of 5 (range, 2-10) before sclerotherapy.
Paired analysis showed significant improvement in NRS score after sclerotherapy.
NRS (0-10) measured global discomfort from the patient's perspective.
Results
Sclerotherapy produced a substantial reduction in lesion volume, with a mean decrease of 82% across all patients.
Mean lesion dimensions fell from 3.27 × 1.69 × 1.85 cm (volume 3.59 cm3) to 1.54 × 0.87 × 0.96 cm (calculated volume 0.47 cm3).
Paired analysis showed a significant improvement in lesion volume.
Lesion volume was calculated using ultrasound.
Results
Most lesions showed excellent or moderate volumetric response, and only a small fraction showed mild response.
Twenty-one lesions (42.86%) had an excellent response (≥90% reduction).
Twenty-three lesions (46.94%) had a moderate response (≥50% and <90% reduction).
Five lesions (10.2%) had a mild reduction (<50%).
Results
Treatment required a median of about 2 sessions per patient, with a range of 1 to 5.
The study included 49 outpatients with symptomatic deep-seated oral and maxillofacial VMs.
Treatment was between August 2023 and September 2025.
It was a retrospective study of portable ultrasound-guided pingyangmycin sclerotherapy.
Results
No severe complications occurred with the procedure.
Complications were recorded during follow-up.
The authors conclude that the procedure is feasible and well-tolerated as an outpatient-based treatment.
What This Means
This study looked back at 49 outpatients with venous malformations (abnormal clusters of veins) located deep in the mouth and face area. They were treated with pingyangmycin, a sclerosing drug injected into the lesion under guidance from a portable ultrasound machine. Patients had a median of about 2 sessions, with a range of 1 to 5.
After treatment, all patients reported symptom relief. Their discomfort scores on a 0-10 scale fell from a median of 5 to a median of 0. Lesions shrank by 82% on average, from about 3.6 cm³ to 0.5 cm³. Around 43% of lesions shrank by 90% or more, 47% shrank by 50-90%, and about 10% shrank by less than half. No severe complications were reported.
This research suggests that ultrasound-guided pingyangmycin injection performed in an outpatient setting may be a practical and well-tolerated option for these hard-to-reach lesions. However, the study was retrospective, had no comparison group, and was relatively small, so the findings should be confirmed in larger, controlled studies.
Wang Q, Sun X, Zhao C, Wu J, Bai H, Zheng J. (2026). Efficacy and safety of portable ultrasound-guided pingyangmycin sclerotherapy for deep-seated oral and maxillofacial venous malformations: a retrospective observational study.. Frontiers in neurology. https://doi.org/10.3389/fneur.2026.1932113