Objective To evaluate the effects of traspupillary thermotherapy (TTT) for the treatment of central exudative chorioretinopathy (CEC). Methods Twelve eyes of 12 patients who suffered from CEC were treated by using a diode laser at 810 nm. A variable spot size of 0.5mm-2.0mm was used depending on the size of choroidal neovascularization (CNV).The treatment was initiated in one spot for 55 to 60 seconds duration at a power range between 200-350 mW, and the treated area revealed no visible color change to a light-gray appearance. Preoperative and postoperative fluorescein angiography (FFA) and indocyanine green angiography (ICGA) were performed in 10 of the 12 eyes. Results The visual acuity in all eyes was improved to different degree over a period of 3-10 months. Five or more lines improvement measured by Snellen chart in visual acuity was found after the treatment in 4 eyes, three to five lines in 5 eyes and one to two lines in 3 eyes. All eyes demonstrated decreased or vanished exudation in FFA. CNV disappeared or decreaced in 8 eyes and remained nochange in 2 eyes in ICGA. Conclusion TTT is obviously effective in treating CEC. (Chin J Ocul Fundus Dis, 2002, 18: 187-189)
Abstract: Objective To summarize the method and effective result of thoracoscopic intrapleural perfusion hyperthermochemotherapy(TIPHC) for treating malignant pleural effusion caused by lung cancer. Methods Fiftyeight patients with malignant pleural effusion caused by lung cancer were randomly divided into therapeutic group(30 cases) and control group(28 cases) between February 1999 and March 2005. Pleural biopsy and TIPHC under general ansthesia with unilateral ventilation were performed in the therapeutic group, and intrapleural injection of cisplatin was administered in control group after drainage of pleural effusion. The effect on malignant pleural effusion， the change for the concentration of carcinoembryonic antigen(CEA)， cytokeratin-19 fragments (CYFRA21-1)， neuronspecific enolase (NSE) and the side effect were compared before and after the treatment. Results The therapeutic group achieved total response rate of 100.0%, but only 53.6% in control group, with significant difference(χ 2=3.863, Plt;0.05). Furthermore, the concentration of CEA， CYFRA21-1， NSE in therapeutic group dramatically descended than control group(t=2.562,Plt;0.05). But there was no significant difference in side effect (Pgt;0.05). The pathological diagnosis of all the patients were determined in the therapeutic group. Conclusion TIPHC has the advantage of both diagnosis and treatment of malignant pleural effusions. It is safe and effective, and also able to determine the diagnosis. Furthermore, it offers the superiority of small wound， best visualization and convenient pleural biopsy.
Objective To observe the therapeutic effects of transpupillary thermal therapy (TTT) on exudative agerelated macular degeneration (AMD) accompanied with subfoveal choroidal neovascularization (CNV).Methods The clinical data of 44 eyes of 41 patients with exudative AMD diagnosed by fundus fluorescein angiography (FFA) who had undergone 810 nmdiode laser were retrospectively analyzed. In the 44 eyes of 41 patients, there were 26 eyes of 24 patients had occult CNV,12 eyes of 12 patients had classic CNV,and 5 eyes of 5 patients had small classic CNV. According to the focus sizes, the diameters of beam spot was 1.2-3.0 mm,the power of laser was 160-400 mW,and the duration was 60 s.The frequency of photocoagulation was once to thrice with the mean of 1.48.The followup duration was 3-24 months with the mean of 10.8 months.Visual acuity, haemorrhage in ocular fundus,absorption of exudation, and the closure of CNV were examined in the followup examination.Results A total of 42 eyes of 40 patients were examined at the last time in the followup duration,in which the visual acuity kept still or improved in 35 eyes of 33 patients (83.34%) and reduced in 7 eyes of 7 patients (16.67%). The results of OCT revealed that 1 and 3 months after the treatment and at the last time of followup duration, the decrease rate of exudative liquid at the macular area was 79.5%,86.4%,and 88.1%, respectively. Three months after the treatment,the macular volume decreased significantly than that before the treatment (P=0.01).The results of FFA demonstrated that at the last time in the folowup duration,the closure rate of occult CNV,classic CNV,and small classic CNV was 79.16%,46.15%,and 60%,respectively.The exudates increased in 6 eyes of 5 paitnets,including 5 eyes of 4 patients with classic CNV and 1 eye of 1 patient with small classic CNV.Conclusion TTT is effective for AMD accompanied with occult CNV,classic CNV, and small classic CNV.
Objective To evaluate the effect of transpupillary thermo therapy (TTT) on the treatment of intraocular tumors. Methods A total of 50 patients with intraocular tumors, including 37 choroidal hemangioma, 2 retinal capillary hemangioma, 5 choroidal osteoma, 4 choroidal melanoma, and 2 retinoblastoma (RB) underwent TTT and were followed up for 1～20 months. Results In 30 patients with choroidal hemangioma (average follow-up was 5.1 months), 29 (96.7%) had pigment scarring in different levels and the retinal detachemnts were partly or completely recovered; 1 had no obvious improvement. The visual acuity was unchanged in 24 (80.0%) patients, improved in 41 (13.3%) and declined in 2 (6.7%). In 2 patients with retinal capillary hemangioma, no effect was found. In 5 eyes (4 patients) with choroidal osteoma (average follow-up was 6 months), no change of the tumor was found in 1 and the atrophic spots were seen in 4; the visual acuity was unchanged in 3, improved in 1 and declined in 1. In 4 patients with choroidal melanoma (average follow-up was 8 months), the tumor was shrunken in 1, unchanged in 2, and enlarged in 1; the visual acuity was unchanged in 2 and declined in 2. In 2 patients with RB, RB was totally shrunken in 1 and partly shrunken in 1. Visual acuity of one child patient who was followed up for 20 months could not be examined, and was unchanged in another one who was followed up for 3 months. No severe complications were found in the patients during the treatment and the follow-up. Conclusions TTT is effective for the treatment of some intraocular tumors except retinal capillary hemangioma. It is a kind of potential treatment for intraocular tumors with few side-effect. (Chin J Ocul Fundus Dis，2003，19：144-148)
Objective To evaluate the efficacy of transpupillary thermotherapy（TTT）on three kinds of intraocular benign tumors. Methods Seventeen patients with 3 kinds of intraocular tumors，3 eyes of 3 patients with papillary hemangioma，9 eyes of 9 patients with choroidal hemangioma and 8 eyes of 5 patients with choroidal osteoma were treated with transpupillary thermotherapy.All patients underwent pretreatment ocular examination，including visual acuity，biomicroscopy for anterior segment and fundus examination，fundus fluorescein and indocyanine green angiography，optic coherence tomography，perimetry test，ultrasonography，and CT.TTT was conducted with infrared diode laser at810nm.with power of 360-1200 mW;beam diameter of 3 mm or combined 2-5 spots according to the tumor size;the exposure time was 60-80 seconds.The treatment was completed in one session，and another treatment was given 1-3 month later if active leakage demonstrated.The follow-up period was 6-36 months（mean 14.5 month）. Results The best corrected visual acuity with Snellen chart on average for papillary hemangioma was 0.17 before TTT and 0.27 after;for choroidal hemangioma was 0.39 before TTT and 0.46 after;for choroidal osteoma was 0.20 before TTT and 0.31 after.Three eyes with papillary hemangioma had operation to release subretinal fluid and intraocular laser coagulation;the tumor remained reddish color with dilated vessels and patches of hemorrhages on the surface.After TTT the color appeared pale yellowish，hemorrhages absorbed，subretinal fluid subsided，and choroidal retinal atrophy disclosed along the lower border of the tumor.In 9 eyes with choroidal hemangioma, the red-light area disappeared, subretinal fluid subsided, and the pigment proliferation in the treatment area was found.Eight eyes with choroidal osteoma had choroidal neovessels and macular hemorrhages;after TTT blood disappeared，subretinal fluid absorbed，and the color of tumor showed pale yellow with dark pigment and thin scar tissue.There was no significant complication associated with TTT. Conclusions Transpupillary thermotherapy is effective on papillary hemangioma，circumscribed choroidal hemangioma and choroidal osteoma either as preliminary or supplementary treatment. (Chin J Ocul Fundus Dis, 2006, 22:181-184)
Objective To observe the therapeutic effect of photodynamic therapy (PDT) and transpupillary thermotherapy (TTT) on circumscribed choroid hemangioma (CCH).Methods Clinical data of 32 patients (33 eyes) with CCH diagnosed by ocular fundus examination, fundus fluorescein angiography (FFA),indocyanine green angiography (ICGA),optical coherence tomography (OCT) and Bultrasound examination were retrospectively analyzed.Before the therapy the selected cases had best corrected visual acuity (BCVA) of fingercounting/15 cm-0.2,the sizes of 2-10 disc diameter (DD) and serous retinal detachment.Twentyone patients (22 eyes) whose tumor located at the posterior pole except for the papillomacular bundle and arch ring area underwent TTT.The parameters of TTT included: Iris 810 nm infra red diode laser，7001200 mW,60 s,and 1-3 spots. Eleven patients (11 eyes) with tumor located at the posterior pole except for the papillomacular bundle and arch ring area underwent. After 15 minutes of intravenous injection with Visudyne, laser irradiation with the wavelength of 689 nm was performed with the time of 83-123 s. The followup period was 12-48 months with the mean of 25.6 months.BCVA and results of indirect ophthalmoscopy,fundus photogrphy,FFA,ICGA,OCT and B ultrasound examination were exanmined and anlyzed.Results In the 22 eyes in TTT group, the BCVA improved in 15 and kept unchanged in 7;the results of fundus examinations showed healed retina and atrophy tumor with greywhite organized scar;the results of FFA revealed no fluorescence leakage and scar fluorescence dyeing of the lesion in later period；the results of OCT indicated disappeared retinal detachment, completely absorbed subretinal liquid and increased reflection of choroid tumor with scar；the results of Bultrasound examination showed no retinal detachment and atrophy tumor.In 11 eyes in PDT group,the BCVA improved in 9, unchanged in 2;the results of fundus examinations showed atrophy tumor with pigmentation；the results of FFA revealed disappeared fluorescence leakage；the results of OCT indicated completely absorbed subretinal liquid；the results of B-ultrasound examination showed atrophy tumor.Conclusions Both TTT and PDT can make the tumor atrophy,improve BCVA or keep it still;but apply to different area.
Objective To compare the clinical results of photodynamic therapy(PDT) and transpupillary thermotherapy (TTT) for patients with choroidal neovascu larization caused by exudative age-related macular degeneration. Methods Seventy cases (82 eyes) with exudative AMD were divided into PDT and TTT groups. Thirty-five cases (42 eyes) were treated with PDT. Nineteen eyes had occult or predominantly occult CNV. Twenty-three eyes had classic or predominantly classic CNV. Thirty-five cases (40 eyes) were treated with TTT. Twenty-five eyes had occult or predominantly occult CNV. Fifteen eyes had classic or predominantly classic CNV . Visual acuity, FFA, ICGA and OCT were evaluated before and after treatment. All cases were subfoveal or juxtafoveal CNV. The follow-up was 3-6 months. Results Visual acuity in 3 eyes (15.8％) of PDT group and 1 eye (4.0％) in TTT group increased at least 2 lines. The difference was no significant(P=0.1778), FFA showed cessation or reduction of fluorescein leakage from CNV in 15 eyes(78.9％) in PDT group and 13 eyes(52.0％) in TTT group. The difference was not significant (P=0 .0657). Three months after treatment, The visual acuity of 2 eyes(10.5％) in PDT group and 2 eyes (8.0％) in TTT group increased at least 2 lines. The difference was not significant (P=0.7728). FFA showed cessation or reduction of fluorescein leakage from CNV in 8 eyes(42.1％) in PDT group and 21 eyes(84.0％) in TTT group. The difference was significant (P=0.0037). Conclusion For classic CNV, the short-term effect of PDT is better than TTT concerning visual acuity. The effect of PDT is apparently better than TTT in cessation or reduction of fluorescein leakage one month after treatment. But there was no significant difference between PDT and TTT in cessation or reduction of fluorescein leakage three month after treatment. For occult CNV, there is no significant short-term difference between PDT and TTT concerning visual acuity. There was no significant difference between PDT and TTT in cessatin or reduction of fluorescein leakage one month after treatment. But three month after treatment TTT is apparently better than PDT in cessation or reduction of fluorescein leakage. We need more cases and longer follow-up to evaluate these two kinds of treatments in treating exudative age-related macular degeneration.(Chin J Ocul Fundus Dis，2004，20：285-288)
Objective To observe the vascular endthelial cellular apoptosis induced by transpupillary thermotherapy (TTT). Methods Vascular endothelial cells (VEC) cultured in vitro were treated with TTT, hyperthermia and TTT combined with indocyanine green (ICG) pretreatment. The cellular apoptosis was detected by doublelabelled flow cytometer (annexin Vfluroescein isothiocyanate and propidium iodide) analysis, fluorescent microscopy, nucleolus stainned with DNA dye hoechst 33258, DNA ladder detection and electron microscopy. Results Without significant rising of the temperature, TTT couldnprime;t increase the apoptosis of VEC. Pure hyperthermia and TTT combined with ICG pretreatment could increase apoptosis of VEC significantly, and the effect of the latter method was more obvious. The higher power of TTT was used and the longer duration the cells were cultured, the higher apoptosis rate of VEC was. Conclusion The induction of apoptosis of VEC might play an important role in the mechanism of the occlusion of CNV by TTT, and combining with ICG may obviously enhance the apoptosis rate at the same temperature, which may supply a theoretical basis for promoting the clinical effect of TTT.