Efficacy and related factors analysis in HMME-PDT in the treatment of port wine stains

Efficacy and related factors analysis in HMME-PDT in the treatment of port wine stains:



Publication date: Available online 3 January 2020

Source: Photodiagnosis and Photodynamic Therapy

Author(s): Dan-chen Li, Nong Xiang, Hu Zhang-yi, Fang Tian-wen, Zhao Ting-ting, Sun Si-hao, LI Ye

ABSTRACT

Objective

To observe the efficiency and safety of hematoporphyrin mono-methylether photodynamic therapy (HMME-PDT) in treating port-wine stains (PWS) with Chinese patients, and to evaluate the advantage of photograph,VISIA Complexion Analysis System, and dermoscopy in efficacy evaluation.Analyzing changes of pain during treatment and related adverse reactions.

Method

62 patients were treated in our department during2017-2019 with HMME-PDT, among which, 20 cases were pink type, 32 cases were purple type and remain 11 cases were nodular thickening type. Initially, all patients received an intravenous injection of 5 mg/kg HMME, and then the lesion areas of the patients were exposed to 532 nm LED green light after 10 minutes. The irradiation power density was range between 80–100 mW/cm2. By utilization of photograph,VISIA system, and dermoscopy to evaluate the clearance after treatments, and then informing the patients to value the pain level during the treatment via visual analogue scale(VAS), and recording the adverse reactions.

Resul

t After 2 times treatments, 11 of the 62 cases were cured (17.74%), 17 cases showed a good efficacy (27.42%), 20 cases indicated alleviation (32.26%), while 14 cases displayed no efficacy (22.58%).By observation, The VISIA system combined with image analysis software is an excellent technique in assessing efficacy. Dermoscopy helps to classify PWS types.It showed that the pain level each patient could endure was distinct, and it’s remarkable that when receiving consecutive 12.09 ± 3.74 min of treatment, most of patients have showed severe pain.Patients with severe pain except young children who couldn't value the pain, had better efficacy.The side effects after treatment mainly displayed with edema, crust, hyperpigmentation. No recurrence within 2 years.

Conclusion

It shows that after treating with HMME-PDT,the efficacy is remarkable and with advantage of safety and less side effects,which worthwhile for further research and promotion.VISIA system combined with image analysis software and dermoscopy are excellent techniques for evaluating efficacy.