scholarly journals Photodynamic therapy for vulvar leukoplakia

2019 ◽  
Vol 7 (4) ◽  
pp. 4-10 ◽  
Author(s):  
T. Р. Artemyeva ◽  
D. A. Tzerkovsky

The aim of study is to evaluate the tolerability and effectiveness of photodynamic therapy as an organ‑preserving treatment in patients with vulvar leukoplakia. 50 patients with a verifed diagnosis of «vulvar leukoplakia» were included in the study. The age varied from 27 to 74 years. The method of treatment assumed the use of the photosensitizer рhotolon (RUE «Belmedpreparaty», Belarus) administered intravenously in doses of 1.8–2.5 mg/kg. Photoirradiation of pathological foci was carried out 2.5–3 hours after intravenous injection of photolon® using a semiconductor laser «UPL PDT» (LEMT, Belarus, λ=661 nm) at exposure doses from 30 to 100 J/cm2 with a power density of 100–170 mW/cm2. The treatment was performed under medical anesthesia. The results of treatment were evaluated using clinical data. Adverse reactions and complications after the introduction of the photosensitizer and photoirradiation have not been observed. Complete clinical regression of the treated pathological foci was noted in 100% of cases with a follow‑up observation 1 month after the treatment. At follow‑up after 3 months, local recurrences of the disease were detected in 4 cases, which were successfully treated with repeated photo‑dynamic therapy sessions. The percentage of complete regressions was 92%, partial – 8%. The obtained results allow judging on the possibility of using photodynamic therapy in the treatment of patients with vulvar leukoplakia, which allows to preserve the organ and obtain a satisfactory functional and cosmetic result.

2019 ◽  
Vol 8 (1) ◽  
pp. 24-28
Author(s):  
D. A. Tzerkovsky ◽  
N. A. Petrovskaya ◽  
A. N. Mazurenko

The aim of the study was to evaluate the immediate results of photodynamic therapy (PDT) in patients with intradermal metastases of skin melanoma. The study included 50 patients who received treatment at the department of hyperthermia and photodynamic therapy. The study included 23 (46%) men and 27 (54%) women with an average age of 60.7±10.4 years. PDT of tumors was carried out 3–4 hours after intravenous administration of a chlorine-based photosensitizer (Photolon) in doses of 1.5–3 mg/kg using a semiconductor laser «UPL-PDT» (Lemt, Belarus, λ=660±5 nm). The exposure doses varied from 100 to 400 J/cm2; power density – from 0.2 to 0.9 W/cm2; power – from 0.25 to 1 W and time of PDT of one focus was dependent on the size and location of the tumor and was 5 to 20 minutes. Evaluation of antitumor efficacy of PDT was carried out according to WHO criteria. The terms of follow-up of patients were between 3 and 23 months. At follow-up observation, 1–3 months after the treatment, complete regression of intradermal metastases of skin melanoma was achieved in 9 (18%) patients, partial – in 28 (56%), process stabilization in 8 (16%) and progression in 5 (10%)) patients. The objective effect was achieved in 74% of patients, the therapeutic – in 90%. PDT can be used in the treatment of intradermal metastases of disseminated skin melanoma with palliative purposes and allows reducing the tumor volume, which significantly improves the quality of life of patients.


2022 ◽  
pp. 1-2
Author(s):  
Percy Lehmann

Actinic keratoses are a chronic condition in ultraviolet-damaged skin, with a risk of progressing to invasive skin cancer. The aim of this study was to investigate the preventive potential of field-directed repetitive daylight photodynamic therapy for actinic keratoses. A randomized trial was performed, including 58 patients with ≥5 actinic keratoses on photodamaged facial skin, who received either 5 full-face sessions of daylight photodynamic therapy within a period of 2 years or lesion-directed cryosurgery. Primary outcome was the mean cumulative number of new actinic keratoses developed between visits 2 and 6 (visit 6 being a follow-up). This outcome was lower after daylight photo-dynamic therapy (7.7) compared with cryosurgery (10.2), but the difference did not reach significance (–2.5, 95% confidence interval –6.2 to 1.2; p = 0.18). Several signs of photoageing (fine lines, pigmentation, roughness, erythema, sebaceous gland hyperplasia) were significantly reduced after daylight photodynamic therapy, but not after cryosurgery. Significantly less pain and fewer side-effects were reported during daylight photodynamic therapy than during cryosurgery. This study found that repetitive daylight photodynamic therapy had photo-rejuvenating effects. However, the prevention of actinic keratoses by this therapy could not be proven in a statistically reliable manner.


2018 ◽  
Vol 08 (04) ◽  
pp. 024-027
Author(s):  
Shiny Inasu ◽  
Biju Thomas

AbstractA novel noninvasive photochemical approach for infection control, namely photodynamic therapy, has received much attention in the treatment of oral diseases which requires three nontoxic ingredients namely visible harmless light, a photosensitizer and oxygen are involved in this therapy. It is based on the principle that a photosensitizer binds to the target cells which when activated by light of a suitable wavelength results in the production of singlet oxygen and other very reactive agents that are extremely toxic to certain cells and bacteria. This article highlights the application of photo-dynamic therapy in management of periodontal disease and its current status.


Author(s):  
Paul J. Muller ◽  
Brian C. Wilson

ABSTRACT:Interest in photodynamic therapy of malignant brain tumours has been growing in recent years as intra-operative laser applications become more available.We have developed an inflatable balloon which can be coupled to an argon dye pump laser in order to deliver light to a brain tumour cavity created by the subtotal resection of tumour. Eight patients with primary malignant brain tumours have been treated with photodynamic therapy (PDT) using this device. The 8 patients tolerated the treatment well; morbidity attributable to the PDT was acceptably low.


Author(s):  
И.В. Меньшикова ◽  
В.И. Сороцкая

В многоцентровом исследовании «КОЛИБРИ» оценивали эффективность и переносимость инъекционного средства замедленного действия для терапии остеоартроза крупных и мелких суставов. Исследуемую группу составили 49 больных (87,8% женщин, 12,2% мужчин, медиана возраста – 63,4 [52,3; 75,2] года, длительность болезни – 5,86 [3,07; 11,4] года, индекс массы тела – 30,06 [23,1; 41,4] кг/м2): 14,6% – с поражением мелких суставов кистей (1-я группа), 62,5% – с поражением крупных суставов, получавшие препарат внутримышечно (2-я группа), и 22,9% – с поражением крупных суставов, получавшие препарат внутрисуставно (в/с) и внутримышечно (в/м) (3-я группа). В течение года проведено 2 курса инъекций с интервалом 6 мес и последующим наблюдением в течение 3 мес. Результаты лечения оценивали в динамике по визуально-аналоговой шкале (ВАШ) боли, индексам AUSCAN и WOMAC, удовлетворенности пациента и врача по 5-балльной шкале и потребности в нестероидных противовоспалительных препаратах (НПВП). После первого курса лечения отмечено статистически значимое уменьшение боли по шкале ВАШ на 45,4-57,7%, индекса AUSCAN– на 49,3%, индекса WOMACво 2-й группе – на 44,9%, в 3-й группе – на 53,2%. Около 1/3 больных отказались от приема НПВП. К началу второго курса указанные показатели возросли, но не до исходного уровня. После второго курса терапии отмечено дальнейшее улучшение показателей боли по ВАШ – на 20,2-30,8%, индекса AUSCAN – на 28,4%, индекса WOMAC во 2-й группе – на 20,5%, в 3-й группе – на 22,9%. Через 3 месяца наблюдения отмечено уменьшение по сравнению с исходными показателями боли по ВАШ на 60,8-64,8%, индекса AUSCAN – на 34,3%, WOMAC во 2-й группе – на 51,3%, в 3-й группе – на 35,4%. Наиболее выражена была динамика скованности в суставах. 50% пациентов отказались от приема НПВП. Нежелательные реакции (дерматит в месте инъекции и синовит после внутрисуставного введения препарата) выявлены у 2 больных. The aim of the study was to assess the efficacy and tolerability of slow-acting injectable agent for the treatment of osteoarthritis in the treatment of osteoarthritis of large and small joints. The study group consisted of 49 patients (87,8% women, 12,2% men, whose median age – 63,4 [52,3; 75,2] years, the duration of the disease – 5,86 [3,07; 11.4] years, body mass index – 30,06 [23,1; 41,4] kg/m2): 14,6% – with damage to small joints of the hands (group 1), 62,5% with damage to large joints, who received the drug only intramuscularly (group 2) and 22,9% with lesions of large joints, who received the drug intra-articularly and intramuscularly (group 3). During the year, 2 courses of injections were carried out with an interval of 6 months. 3 months follow-up period was held. The results of treatment were assessed by the dynamics of the VAS of pain, AUSCAN and WOMAC indices, patient and doctor satisfaction on a 5-point scale, and the need for non-steroidal anti-inflammatory drugs (NSAIDs). After 1 course of treatment, there was a statistically significant decrease in pain according to VAS in all groups by 45,4-57,7%, in the AUSCAN index – by 49,3%, in the WOMAC index in group 2 – by 44,9%, in group 3 – by 53,2%. About 1/3 of patients refused to take NSAIDs. By the beginning of the 2nd course, these indicators increased, but not to the initial level. After the 2nd course of therapy, further improvement was noted pain according to VAS – by 20,2-30,8%, AUSCAN index – by 28,4%, WOMAC index in group 2 – by 20,5%, in group 3 – by 22 ,9%. After 3 months of follow-up there was a decrease in comparison with the initial indicators: pain according to VAS – by 60,8-64,8%, AUSCAN index – by 34,3%, WOMAC in group 2 – by 51,3%, in group 3 – by 35,4%. The dynamics of joint stiffness was most pronounced. Half of the patients stopped taking NSAIDs. Adverse reactions (dermatitis at the injection site and synovitis after i/a administration of the drug) were detected in 2 patients.


2021 ◽  
Vol 39 (15_suppl) ◽  
pp. 5592-5592
Author(s):  
Viktoria A. Ivanova ◽  
Ekaterina V. Verenikina ◽  
Vera P. Nikitina ◽  
Oksana E. Zhenilo ◽  
Anna Yu. Ardzha

5592 Background: Photodynamic therapy (PDT) is an effective method for the treatment of various cancers resulting in apoptosis, autophagy and ischemic necrosis of irradiated tissues. The purpose of the study was to analyze the efficacy of PDT for pre-invasive vaginal cancer treatment. Methods: PDT results were studied in 20 patients aged 32-65 years with verified pre-invasive vaginal cancer. All patients received PDT with the Latus diode laser and Photolon or Photolan photosensitizers. The effect was evaluated with extended colposcopy. The criteria for efficiency included normalization of the colposcopic picture and the absence of atypical cells. The sizes of the irradiation fields varied from 1.5 to 2 cm, the number of fields - from 1 to 4, the power density - from 0.1 to 0.17 W/cm2, the light dose - from 40 to 100 J/cm2. The duration of a PDT session varied from 10 to 30 min, depending on the number of irradiation fields. The irradiation field necessarily included an area of normal tissue 3-5 mm surrounding the lesion. 4 to 6 sessions were required to restore the normal layer of stratified squamous epithelium. The antitumor efficacy of PDT was evaluated based on the results of visual observation of changes in the area of the treated pathological foci and information on the presence or absence of clinical symptoms of the disease 1 and 3 months after the treatment (WHO criteria). Results: Complete regression was registered in 100% of patients after 3 months. Repeated courses of PDT were required in cases with a wide spread of pathological foci and the impossibility of their simultaneous irradiation. At follow-up after 1 month, 3 of 20 patients (15%) showed local foci of atypical changes in the epithelium managed with repeated PDT courses. In 6 months, stable remission of the disease clinical symptoms in the treated pathological foci was registered. The results of the cytological study performed 3 months after PDT were normal in 100% patients; no negative changes were registered 6 and 12 months after PDT. Conclusions: The results of PDT in the treatment of patients with pre-invasive vaginal cancer demonstrated its high therapeutic efficacy and a minimal number of adverse reactions, which allows recommending PDT in the treatment of pre-invasive vaginal cancer.


2021 ◽  
Vol 8 (4) ◽  
pp. 33-43
Author(s):  
V. N. Kapinus ◽  
M. A. Kaplan ◽  
E. V. Yaroslavtseva-Isayeva ◽  
I. S. Spichenkova ◽  
S. A. Ivanov

Purpose of the study. Evaluation of the therapeutic efficacy of chlorin E6-photodynamic therapy (PDT) with photosensitizers (PS) photoditazine, photolone and photoran in patients suffering basal cell skin carcinoma.Materials and methods. The efficacy of chlorin E6-PDT was studied in 532 patients with basal cell skin cancer (BCC) aged 28 to 93 years. PhS Photoditazine was used in 72 (13,5 %) patients at a dose of 0.5-1.0 mg/kg, PhS Photolon - in 281 (52,8 %) patients at a dose of 1.1-1.6 mg/kg and PhS Photoran - in 179 (33,6 %) people at a dose of 1.1-1.6 mg/kg.Sessions of local irradiation of tumor foci were performed on a laser device "Latus-2" (662 nm) with a power density of 200-500 mW/cm2, light energy was applied to the tumors at a dose of 100-300-600 J/cm2.Results. During the follow-up period from 6 months to 5 years, 16.2 % of cases of relapse were diagnosed in the study group. When analyzing the results, it was found that the percentage of relapses was minimal when using all PhS in patients who underwent PDT for the first time established BCC of the initial stages (neoplasms up to 2.0 cm) and amounted to 2.2 % (4 patients out of 183), and with a prevalence of the process of more than 2.0 cm and up to 4.0 cm, 9.5 % (10 patients out of 105) of relapses were found. In the results of treatment of recurrent skin malignancies with PDT using derivatives of chloride E6, depending on the prevalence of the process, a similar trend was observed: with the size of tumor foci up to 2.0 cm, the percentage of repeated relapses was less and amounted to 17.1 % (18 patients out of 105) than in the treatment of neoplasms more than 2.0 cm and up to 4.0 cm (28.8 % of relapses - 21 patients out of 73).Conclusions. Chlorin E6-PDT makes it possible to effectively treat primary and recurrent BCC in an independent variant, and the results of treatment depend on a number of factors, including the prevalence of the disease and the presence or absence of previous treatment.


VASA ◽  
2012 ◽  
Vol 41 (2) ◽  
pp. 120-124 ◽  
Author(s):  
Asciutto ◽  
Lindblad

Background: The aim of this study is to report the short-term results of catheter-directed foam sclerotherapy (CDFS) in the treatment of axial saphenous vein incompetence. Patients and methods: Data of all patients undergoing CDFS for symptomatic primary incompetence of the great or small saphenous vein were prospectively collected. Treatment results in terms of occlusion rate and patients’ grade of satisfaction were analysed. All successfully treated patients underwent clinical and duplex follow-up examinations one year postoperatively. Results: Between September 2006 and September 2010, 357 limbs (337 patients) were treated with CDFS at our institution. Based on the CEAP classification, 64 were allocated to clinical class C3 , 128 to class C4, 102 to class C5 and 63 to class C6. Of the 188 patients who completed the one year follow up examination, 67 % had a complete and 14 % a near complete obliteration of the treated vessel. An ulcer-healing rate of 54 % was detected. 92 % of the patients were satisfied with the results of treatment. We registered six cases of thrombophlebitis and two cases of venous thromboembolism, all requiring treatment. Conclusions: The short-term results of CDFS in patients with axial vein incompetence are acceptable in terms of occlusion and complications rates.


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