放疗联合热疗治疗颈部淋巴结转移癌的临床疗效观察

目的:观察颈部淋巴结转移癌放射治疗加热疗的临床疗效.方法:100例颈部转移癌患者,随机分成2组,热疗加放疗组(H+R),单纯放疗组(R),两组病例放射治疗均采用8MV-X射线照射,DT:2Gy/次,1日1次,1周5次,H+R组病人1周配合2次热疗,共进行10次.结果:治疗剂量达50Gy时,放疗+热疗组CR+PR:92%,单纯放疗组CR+PR:76%,二者有显著性差异;放疗+热疗组,剂量达56-60Gy时,CR:72%,单纯放疗组,剂量达66-70Gy时,CR:44%,二者有显著性差异.结论:放疗联合热疗治疗可减少放射治疗剂量,减轻局部放射负损伤,提高病灶消退率,使颈部淋巴结转移癌疗效明显提高.     

恶性肿瘤放疗加超声热疗的近期疗效

目的 :研究放疗结合超声热疗治疗恶性肿瘤的疗效及毒副反应。方法 :1997年 1月～ 2 0 0 0年 1月间4 1例经病理证实的局部晚期、复发 /转移或对放射敏感性差的表浅性恶性肿瘤患者接受放疗加超声热疗 ,放疗均采用外照射 ,平均剂量 (6 1± 12 )Gy ,热疗于放疗结束后 30分钟内进行 ,1～ 2次 /周 ,平均加热时间为 (5 2 .4± 6 )分钟 ,平均加热 (4.9± 2 .2 )次。采用方差分析肿瘤消退率与热疗参数的关系 ;Kaplan Meier、Cox回归分析三年局部控制率、生存率和预后因素的影响。结果 :CR、PR、NC间的Tmin、Tmax值差异具有统计学意义。全组肿瘤局部CR为 5 8.5 % ,三年局控率、生存率分别为 13.6 %和 32 .6 9%。Tmin、肿瘤体积、放射剂量对三年局控率有显著性影响 (P <0 .0 5 )。超声热疗配合放疗毒副反应较轻。结论 :Tave、Tmax、Tmin、Tmax等参数可用于反映、评价热疗效果 ,放疗结合超声热疗为治疗晚期表浅性恶性肿瘤的有效方法 ,毒性小 ,值得进一步研究。     

放疗联合热疗治疗颈部淋巴结转移癌的临床疗效观察

目的：观察颈部淋巴结转移癌放射治疗加热疗的临床疗效。方法：100例颈部转移癌患者,随机分成2组,热疗加放疗组（H＋R）,单纯放疗组（R）,两组病例放射治疗均采用8MV-X射线照射,DT：2Gy/次,1日1次,1周5次,H＋R组病人1周配合2次热疗,共进行10次。结果：治疗剂量达50Gy时,放疗＋热疗组CR＋PR：92%,单纯放疗组CR＋PR：76%,二者有显著性差异;放疗＋热疗组,剂量达56-60Gy时,CR：72%,单纯放疗组,剂量达66-70Gy时,CR：44%,二者有显著性差异。结论：放疗联合热疗治疗可减少放射治疗剂量,减轻局部放射负损伤,提高病灶消退率,使颈部淋巴结转移癌疗效明显提高。     

局部复发非小细胞肺癌SRT再程放疗近期疗效及不良反应观察

目的 探讨立体定向放疗(SRT)在局部复发非小细胞肺癌(NSCLC)中的近期疗效及不良反应。方法 回顾分析2009-2015年收治的120例NSCLC放疗后复发患者,再程放疗使用SRT,处方剂量为50%剂量曲线包绕靶区,总剂量40~50 Gy,4~5 Gy/次,共8~12次。放疗后每2个月复查胸部CT,评价近期疗效、不良反应,记录放疗前后KPS和生活质量评分(QOL)变化。结果 1例患者因3级急性放射性肺炎终止放疗,其余119例完全缓解(CR)占21.0%(25/119)、部分缓解(PR)占51.3%(61/119)、稳定(SD)占16.0%(19/119)、进展(PD)占11.8%(14/119),客观有效(CR+PR)率为72.3%(86/119),疾病控制(CR+PR+SD)率为88.2%(105/119)。放射性肺炎31例,放射性骨髓抑制23例,急性放射性心脏损伤1例,经对症处理后缓解。KPS从疗前68.16±15.22提高至疗后78.39±11.50(P<0.05);QOL从疗前27.58±5.37提高至疗后38.16±8.39(P<0.01)。结论 SRT局部复发的NSCLC安全有效、不良反应可控、患者可耐受,并可提高生活质量。     

γ刀治疗92例脑转移瘤的临床分析

[目的]探讨γ刀治疗脑转移瘤的疗效及相关因素。[方法]92例脑转移瘤，病灶总数318个，平均3.5个/例，单发病灶17例（18.5%），多发病灶75例（81.5%），采用靶周剂量12Gy～18Gy，等剂量曲线45%～60%旋转式γ刀治疗；31例（33.69%）加用全脑放疗。[结果]随访3～46个月（平均19.7个月），治疗后3～12个月复查MR显示治疗有效率83.70%（77/92）。转移瘤5个以内者局部控制率为91.89%；转移瘤在5个以上者局部控制率为82%；弥散转移瘤的局部控制率为63.64%。治疗未引起严重并发症和死亡病例。[结论]γ刀治疗脑转移瘤能取得一定的疗效。     

局部复发鼻咽癌超分割加立体定向适形放疗的临床研究

目的:初步评价超分割外照射加立体定 向适形放射剂量治疗局部复发鼻咽癌的临床疗 效及毒副反应。方法:对1999～2002年收治的 14例复发鼻咽癌进行超分割外照射(1.3Gy/次, 2次/d,总剂量42～60Gy)加立体定向适形放射 推量(4Gy/次,隔日照射,共10次,总量20Gy) 的临床研究。结果:总有效率(CR+PR)85.7% (12/14),其中完全消退(CR)64.3%(9/14),部分 消退(PR)21.4%,肿瘤稳定14.3%,2年总生存 率57.1%(8/14),无瘤生存率42.8%(6/14),靶 区肿瘤控制率为78.6%(11/14)。结论:超分割 外照射加立体定向适形放射剂量治疗局部复发 鼻咽癌在临床上是可行及有效的。     

立体聚集热疗加放射治疗盆腔恶性肿瘤的临床研究

目的　探讨BSD2 0 0 0型热疗机深部立体聚焦热疗结合放射治疗盆腔恶性肿瘤的疗效。方法　自 1995年8月至 1997年 12月我们将 6 1例盆腔复发或转移的恶性肿瘤病人随机分为热疗加放疗组 ( 3 1例 )和单纯放疗组 ( 3 0例 )。热疗采用立体聚焦的BSD2 0 0 0型热疗机 ,Sigma6 0辐射器 ,每周热疗两次 ,每次均于同日放疗后 3 0分钟内进行 ,每次 40～ 6 0分钟。平均每例热疗 3 .5次。采用高电阻铅测温针肿瘤内测温。放疗用 6MV或 15MVx线 ,每周 5次 ,每次 1.8～ 2 .0Gy ,三野或四野照射 ,均用缩野技术。热疗加放疗组平均照射 5 6Gy ,单纯放疗组 6 0 .5Gy。 结果　治疗结束后热疗加放疗组CR率为 6 4 .5 % ;单纯放疗组为 3 3 .3 3 % (P <0 .0 5 )。放疗至 2 0Gy时两组的CR PR率即显示有明显的意义(P <0 .0 5 )。当放疗至 40Gy时热疗加放疗组的CR率即达 5 5 .2 % ,明显高于单纯放疗组 ( 2 3 .3 % )P <0 .0 5。热疗加放疗组的副作用包括加热区域疼痛 ,股外侧烧灼样感 ,脉搏增快 ,血压升高 ,皮肤水疱。两组皮肤反应均低于Ⅱ°。发生率两组无明显差异 (分别为 2 2 .6 % ,16 .7% )。结论　采用BSD2 0 0 0型深部立体聚焦热疗机热疗结合放疗可以明显提高盆腔复发或转移恶性肿瘤的疗效 ,减少放疗的并发症。     

皮肤B细胞淋巴瘤的放射治疗

目的:根据WHO/EORTC最新分期,报告30例原发性皮肤B细胞淋巴瘤患者的放疗效果。材料和方法:从1978年10月到2002年6月,30例皮肤B细胞淋巴瘤患者接受皮肤放射治疗。男性21例,女性9例。年龄23-89岁(平均年龄48岁)。随访期从放疗结束开始计算,平均随访期限47个月(4～301个月)。所有患者根据WHO/EORTC分期重新分期:2例PCMZL(6.7%);18例PCFCL(60%);8例PCLBCL小腿型(26.7%);1例血管内PCLBCL(3.3%);1例未分型。根据病灶数量患者分为:第一组,单个病灶13例(43%);第二组,同一解剖部位的多个病灶13例(43%);第三组,弥散性病灶4例(13%)。根据病灶部位分为:7例头颈部病灶,6例躯干病灶,7例下肢病灶,3例上肢病灶,7例全身弥散病灶。11例(36.7%)在放疗前接受了新辅助化疗CHOP,在放疗时均有残留病灶。选择扩展野(extended field irradiation,EFI)放射治疗9例多发病灶和弥散病灶。治疗机为SATURNE CLINAC,能量4-8MeV电子线,剂量为30Gy(4次/周;2.5Gy/次),治疗靶区为全身或半身。局部野(localized field irradiation,LFI)作为根治治疗或扩展野后加量治疗22例,治疗机为DARPAC,0.55cm铝过滤片,45KV的X线照射小病灶,100KV以上能量的用于治疗较深部病灶,运用不同类型及大小的限光筒(直径1.5-20cm)照射不同大小的病灶。剂量30-40Gy(2Gy/次,5次/周)。所有放射野为肿块加周围正常皮肤2.5cm。统计软件为SPSS10.0。结果:完全缓解(CR)为86%,完全缓解时间4～301个月。3例患者部分缓解(PR,11%)。1例进展。患者10年总生存率为87%。3例患者死亡(1例PCMBCL,2例PCLBCL小腿型29%)。所有患者都能耐受放疗。结论:根据WHO/EORTC分期,PCMBCL和PCFCL生存率高。PCLBCL下肢型预后较差。局部野对局部病灶有治疗效果,并能保持长期缓解。弥散病灶患者通常采用扩展野和/或化疗。对于进展期的患者,化疗是治疗选择,同时使用局部野治疗获得良好的姑息疗效。     

适形放疗与常规放疗结合治疗Ⅲ期肺鳞癌疗效分析

目的探讨常规放疗与适形放疗结合治疗Ⅲ期肺鳞癌的疗效及患者的耐受性.方法自1996年10月至2002年10月对118例Ⅲ期肺鳞癌患者常规放射治疗40～50 Gy(平均44.6 Gy)后的残留病灶再行适形放疗.肿瘤边缘单次处方剂量平均为6.8 Gy,间隔1～2 d,总照射剂量平均为39.4 Gy.肿瘤靶体积(GTV)0.8～148.6 cm3,平均36.6 cm3;计划靶体积(PTV)3.6～213.5 cm3,平均51.4 cm3.结果近期CR率30.5%(36/118),PR率53.4%(63/118),NR率11.9%(14/118),PD率4.2%(5/118),总有效率(CR PR)83.9%.1,2,3年生存率分别为68.6%(81/118)、35.6%(31/87)和12.2%(6/49),局部控制率分别为92.4%(109/118)、85.1%(74/87)和79.6%(39/49).急性放射性肺炎Ⅰ～Ⅱ级32例,Ⅲ级4例,Ⅳ级0例.晚期放射毒副反应:放射性食管损伤Ⅲ级1例,放射性肺损伤Ⅱ级1例.结论对Ⅲ期肺鳞癌常规放疗后再行适形放疗局部加量照射,患者可耐受,疗程短,可提高肿瘤控制率,延长生存期,是局部剂量升级的有效方法.     

复发性鼻咽癌三维适形放射治疗的疗效分析

目的 分析复发性鼻咽癌三维适形放射治疗的疗效及影响疗效的因素.方法 56例复发性鼻咽癌接受三维适形放射治疗,鼻咽部剂量50～70Gy/36～52d(中位64Gy/44d).结果 全组病例随访3年以上.3年总生存率、无瘤生存率和鼻咽部局部控制率分别为48.2 %、44.6%和53.6%.复发间隔时间＞2年和复发临床分期T2期者,3年生存率和局部控制率高(P＜0.05);再程放疗剂量≥60Gy者,3年生存率和局部控制率优于＜60Gy.结论 三维适形放射治疗是复发性鼻咽癌有效的治疗手段,其复发间隔时间、复发临床分期和再程放疗剂量是影响预后的因素.     

Local hyperthermia combined with external irradiation for regional recurrent breast carcinoma

Backgrounds The purpose of this study was to evaluate the therapeutic effects of hyperthermia in combination with radiotherapy for locoregional recurrence of breast cancer, and to assess the factors related to subsequent local tumor control.Methods Between March 1981 and February 2001, 85 lesions in 73 patients were treated with local hyperthermia combined with external irradiation. Of 75 evaluable lesions, 41 were previously irradiated. Mean radiation dose to the previously unirradiated area was 59.5 ± 6.8Gy (range, 40–70Gy), while a total dose of 43.0 ± 12.4Gy (range, 12–74.4Gy) was administered to previously irradiated tumors. Hyperthermia was administered once or twice per week. The average number of hyperthermia sessions was 4.5 (2–9).Results Complete responses (CRs) were achieved in 56% (23/41) of previously irradiated and 47% (16/34) of unirradiated tumors. There was no significant difference in the CR rate between the two groups. Compared with the response of bulky/nodular tumors, diffuse/multiple small nodular tumors showed a higher CR rate at 4 weeks after treatment. However, at 6 months after treatment, they showed a significantly lower local control rate.Conclusions The present findings suggested a significant benefit of local hyperthermia combined with radiotherapy in the treatment of locally recurrent breast cancer, especially for previously irradiated recurrence, by reducing the total irradiation dose. Diffuse/multiple small nodular tumors respond earlier than bulky/large nodular tumors; however, they tend to recur within the treatment field.     

体部伽玛刀联合微波加热治疗直肠癌术后局部复发的临床观察

目的：评价体部伽玛刀联合微波加热治疗对直肠癌术后局部复发患者的临床疗效及毒副反应。方法：对直肠癌术后局部复发的３６例患者应用体部伽玛刀联合微波加热治疗。伽玛刀治疗方案：５０％ ～８０％处方剂量线,４～６Ｇｙ／次,每周５次,总剂量３６～４２Ｇｙ,生物等效剂量５６～６７Ｇｙ。微波加热治疗方案：伽玛刀治疗期间予以微波加热治疗,每周２次,共４次。每次热疗均在伽玛刀治疗前进行,热疗温度保持在４０～４３℃范围,持续加热时间１.５～２ｈ。治疗结束后１个月复查盆腔ＣＴ。结果：完全缓解７例,部分缓解２５例,稳定３例,进展１例,近期总有效率８８.９％。１、２和３年生存率分别为１０００％、８３.３％和６０.８％。主要毒副反应为下消化道反应,其中Ⅲ级反应２例。其余均为Ⅰ ～Ⅱ级。结论：体部伽玛刀联合微波加热治疗直肠癌术后局部复发患者的疗效好,毒副反应轻。     

Interstitial microwave hyperthermia combined with iridium-192 radiotherapy for recurrent tumors

From 1985 through 1987, 44 tumors in 39 patients with recurrent cancer were treated with interstitial microwave hyperthermia (HT) combined with interstitial 192Ir radiotherapy (RT). All patients had unresectable and previously treated tumors (mean RT dose 57.6 Gy). Diagnoses were squamous cell carcinoma in 27 (62%), adenocarcinoma in 11 (25%), melanoma in 5 (11%), and soft tissue sarcoma in 1 (2%) site. Interstitial RT dose was from 25 to 50 Gy (mean 38.3 Gy). The first HT session was scheduled immediately before the loading of 192Ir, and the second was scheduled following its removal. Each session lasted 45-60 min at therapeutic temperature (42.5 degrees C). Complete response (CR) was obtained in 28 (64%) sites and partial response (PR) in 15 (34%) sites. None of the CR patients had local recurrence. Tumor volume was the most important factor influencing CR (p less than 0.001). The treated site, radiation dose, and thermal dose were not significant factors for CR (p = 0.03). The overall median survival was 39 weeks, with a 2-year survival of 22%. The treatment was well tolerated, with two patients developing focal skin necrosis.     

Low dose reirradiation in combination with hyperthermia: a palliative treatment for patients with breast cancer recurring in previously irradiated areas

Ninety-seven patients with breast cancer recurring in a previously irradiated area (mean dose 44 Gy) were reirradiated in combination with hyperthermia and had evaluable tumor responses. In the reirradiation series, radiotherapy was given twice weekly in most patients, with a fraction size varying from 200 to 400 cGy, the total dose varying from 8 to 32 Gy. Hyperthermia was given following the radiotherapy fractions. The combined treatment resulted in 35% complete and 55% partial responses. Duration of response was median 4 months for partial response and 26 months for complete response, respectively. The median survival time for all patients was 12 months. Acute skin reaction was mild, with more than moderate erythema in only 14/97 patients. Thermal burns occurred in 44/97 patients, generally at sites where pain sensation was decreased, and therefore they did not cause much inconvenience. In the 19 patients who survived more than 2 years, no late radiation damage was observed. When patients who received a "high dose" (greater than 29 Gy and hyperthermia) were compared with those who received a "low dose" (less than 29 Gy and hyperthermia), a higher complete response rate was observed in the high dose group (58% vs. 24%), whereas no difference in acute toxicity was found. We conclude that reirradiation with 8 x 4 Gy in combination with hyperthermia twice weekly is a safe, effective and well tolerated method for palliative treatment of patients with breast cancer recurring in previously irradiated areas.     

Thermoradiotherapy for locally recurrent breast cancer with skin involvement.

PURPOSE: This retrospective analysis investigated the effectiveness and side-effects of combined hyperthermia and radiation therapy in locally recurrent breast cancer after primary modified radical mastectomy. The aim of the thermoradiotherapy was to reduce the substantial risk of symptomatic chest wall disease. MATERIALS AND METHODS: Between May 1995-August 1998, 39 extensively pre-treated women with progressive locoregional chest wall tumours were treated with local radiofrequency hyperthermia, given twice a week immediately before radiotherapy. Sixty-two per cent of the patients had received previous radiotherapy, with a median dose of 50 Gy, 64% had received chemotherapy, 36% hormonal therapy, and 13% local therapy with miltefosin, respectively. Nine patients were treated for microscopic residual disease after local tumour excision (R1-resection) and 30 patients for gross macroscopic nodular recurrences. Twenty-seven patients had two adjacent hyperthermia fields at the ipsilateral chest wall to cover the whole irradiation area. Each field received a median of seven local hyperthermia sessions (range 2-12, average 5.6 sessions) just before radiation therapy, with a median dose of 60 Gy (range 30-68 Gy). The monitored maximum(average) and average(average) epicutaneous temperatures were 42.1 degrees C and 41.0 degrees C, respectively. Maximum(average) and average(average) intratumoural temperatures of 43.0 degrees C and 41.1 degrees C, respectively, were achieved in nine chest wall recurrences with intratumoural temperature probes. Concurrent hormonal therapy was administered in 48%, and concurrent chemotherapy in 10% of patients. RESULTS: Median overall survival time was 28 months (Kaplan Meier), with 71% and 54% of patients living 1 and 2 years after thermoradiotherapy. The median time to local failure has not been reached, local tumour control after 2 years being 53%. Actuarial 1 and 2 year local tumour controls for microscopic residual disease were 89%, and for macroscopic nodular recurrences 71% and 46%, respectively (p = 0.09). Actuarial 1 and 2 year local tumour controls after treatment with a total dose of less than 60 Gy were 51% and 38%, respectively, and, after a total dose greater than 60 Gy, 84% and 60% (p = 0.01), respectively. Actuarial 1 year local tumour control was 92% after complete tumour remission, versus 57% after partial remission (p = 0.002). Three of the 39 patients died of cancer en cuirasse, 13 patients due to distant metastases. Acute thermoradiotherapy related erythema, dry desquamation and moist desquamation were seen in 28.2%, 30.7%, and 30.7% of patients, respectively. Soft tissue necrosis occurred in two patients with previous post-operative delayed wound healing, and in one patient above a silicon implant. CONCLUSION: This study showed that, in extensively pre-treated patients with locally recurrent breast cancer, local tumour control after thermoradiotherapy depended on tumour resectability, response of macroscopic tumour to thermoradiotherapy, and total irradiation dose.     

放疗联合热疗治疗原发性巨块型肝癌临床疗效观察

目的：比较应用单纯三维适形放疗与三维适形放疗联合局部热疗治疗无法手术切除的巨块型肝癌的临床疗效。方法：64例无法手术切除的巨块型肝癌患者,对照组单纯应用三维适形放疗,每周5次,每次2Gy,总剂量50-60Gy。治疗组应用三维适形放疗联合局部体外热疗,热疗在放疗后30分钟进行,每周2次,每次1小时。结果：治疗后3月内复查,对照组治疗后完全缓解（CR）1例,部分缓解（PR）20例,稳定（SD）6例,疾病进展（PD）3例,总有效率为70%。治疗组治疗后完全缓解（CR）3例,部分缓解（PR）23例,稳定（SD）6例,疾病进展（PD）2例,总有效率为76.4%。P〈0.05。放疗及热疗引起的不良反应可以耐受,而肝功能无明显损害加重。随访1年的生存期为65.5%,与对照组62.8%相比,P值〉0.05无统计学意义。结论：三维适形放疗联合热疗治疗不能手术的巨块型肝癌近期疗效确切,不良反应可耐受,是一种可以在临床应用的方法。     

外放射结合腔内照射治疗气管癌和支气管肺癌的疗效观察

目的 探讨气管癌、支气管肺癌腔内放射治疗的价值。方法 4例原发气管癌和22例原发支气管肺癌及14例(18处病变)支气管肺癌术后复发者，外放射采用6MV X射线，剂量为DT30～77Gy(平均52Gy)；腔内照射采用低剂量率^192Ir小线源(1．48BGq)，支气管黏膜参考点剂量为4～6Gy／次，总剂量10～53Gy(中位值28Gy)。结果 37例肿瘤完全消退(CR)，2例部分消退(PR)，1例轻微变化(MR)，3、5年局部控制率分别为75％和65％。23例生存时间≥3年，3年生存率为57．5％。并发症较少见。结论 外放射结合腔内照射治疗对于早期支气管肺癌、局限性气管癌和支气管肺癌术后复发者是有效的治疗手段．长期生存是可能的。     

Initial results of phase I/II interstitial thermoradiotherapy for primary advanced and local recurrent tumors

Since January 1986 in a phase I/II study, 45 lesions (30 head and neck, 11 pelvic, and 4 other lesions) in 44 patients (24 men, 20 women; age 18-81 years) received a combination of interstitial Ir-192 radiotherapy (IRT) and interstitial 915 MHz MW hyperthermia (IHT) supplemented by external radiation (ERT). In June 1989, evaluation was performed for lesions with minimum follow-up (FU) of 6 months and FU periods between 6 and 39 months (mean: 16 months, SD +/- 9). The tumors comprised 21 advanced primary (AP) lesions without prior ERT, 18 local recurrent (LR) and 6 local metastatic (LM) lesions with variable prior treatment modes; 24 lesions had received prior ERT between 40 and 70 Gy, 23 chemotherapy and 30 prior surgery. The mean dimensions of 42 lesions were 4.5 X 4.0 X 3.0 (cm3) with tumor volumes ranging from 12 to 135 cm3 (mean: 54 cm3, SD +/- 35); 3 lesions had extensive tumor volumes greater than 225 cm3. IHT was applied immediately prior to and/or after low-dose Ir-192 IRT (20-30 Gy) for 60 min at temperatures between 41 and 44 degrees C. ERT (40-50 Gy) was always given for AP and LM lesions, but variably applied for previously irradiated LR lesions, thereby avoiding the cumulative radiation dose exceeding 110 Gy per site. IRT doses ranged from 17-48 Gy (mean: 26.8 Gy, SD +/- 8) at a dose rate of 25-70 cGy/h (mean: 42 cGy/h, SD +/- 12). Thirty-three lesions received additional ERT of 30-56 Gy (mean: 46.5 Gy, SD +/- 9). Total radiation dose (IRT + ERT dose) ranged from 31 to 82 Gy (mean: 61 Gy, SD +/- 18). The hyperthermia systems of Lund/Buchler 4010 and Clini-Therm Mark VI/IX with thermistor or fiber-optic thermometry devices were employed. Initial response at 3 months FU showed 31 (69%) lesions complete response (CR), 10 (22%) partial response (PR), and 4 (9%) no change (NC). Long-term response of 30 lesions at 12 months FU revealed a total of 27 (90%) with local control (LC) and 3 (10%) in-field recurrences. Six patients died prior to 12 months FU, three with LC and three with progressive disease. So far 10 (22%) patients have developed distant metastases. Acute side-effects occurred in 15 lesions (33%) resulting in 12 (27%) long-term complications with 3 lesions (7%) requiring surgery.(ABSTRACT TRUNCATED AT 400 WORDS)     

Hyperthermia combined with radiation therapy for primarily unresectable and recurrent colorectal cancer.

The value of adjuvant hyperthermia to radiotherapy in the treatment of locally advanced colorectal cancers was investigated. Between 1981 and 1989, 71 primarily unresectable or recurrent colorectal tumors were treated with radiotherapy at the Department of Radiology, Kyoto University Hospital. Of the 71 tumors, 35 were treated with radiotherapy plus hyperthermia (group I), while 36 tumors (group II) were unsuitable for hyperthermia mainly because of difficulties with the insertion of temperature probes or the thickness of the patient's subcutaneous fat (greater than 2 cm). The mean total radiation dose was 58 Gy and 57 Gy for groups I and II, respectively. Thirty deep-seated pelvic tumors were treated with an 8 MHz radiofrequency capacitive heating device, and five subsurface tumors were treated with a 430 MHz microwave hyperthermia system. Hyperthermia was given following radiotherapy for 30-60 min for a total of 2-14 sessions (mean 5.7). In 32 of the 35 tumors heated, direct measurement of tumor temperature was performed. For the five tumors treated with the microwave heating device, the means of the mean maximum, average, and minimum measured intratumoral temperatures were 45.4 degrees C, 43.3 degrees C, and 40.6 degrees C, respectively. The corresponding values were 42.2 degrees C, 41.3 degrees C, and 40.3 degrees C for the 27 tumors treated with the capacitive heating device. Effective heating of deep-seated pelvic tumors was more difficult than heating of abdominal wall or perineal tumors. The local control rate at 6 months after the treatment, which was defined as absence of local progression of the tumors, was 59% (17/29) and 37% (11/30) for groups I and II, respectively. The objective tumor response rate (complete regression plus partial response) evaluated by computed tomography was 54% (19/35) in group I, whereas it was 36% (10/28) in group II. A better response rate of 67% was obtained in the 15 tumors with a mean average tumor temperature of greater than 42 degrees C. Although limitation of our current heating devices exist, the combination of hyperthermia with radiotherapy is a promising treatment modality in the treatment of locally advanced colorectal cancer.     

Therapeutic Management with Adriamycin-Containing Chemotherapy and Radiotherapy of Monostotic and Polyostotic Primary Non-Hodgkin's Lymphoma of Bone in Adults

The best treatment of primary lymphoma of bone (PLB) remains underfined. We reviewed 15 patients with monostotic PLB and 8 with polyostotic PLB. Twenty of the patients were suitable for analysis. All patients but 1 received adriamycin-containing chemotherapy in association with radiation therapy. Radiotherapy for monostotic cases consisted of 40 Gy to long bones, followed by a boost to 45 Gy to bulky lesions or 40-45 Gy to whole jut bones. In cases of polyostotic PLB, bulky sites, fractured lesions, or sites with a high risk of fracture were irradiated with a median dose of 38 Gy. All patients with monostotic disease achieved complete remission (CR): 10 patients were alive and relapsefree at the time of this writing, 1 other patient was alive following a relapse, and 1 patient died while relapse-free. The survival rate for the patients in the study at the time of this writing was 92% at 50 months. Four patients with polyostotic disease achieved CR. Three of them had only two adjacent sites of disease and were treated as cases of monostotic PLB. Two of these 3 patients are alive and relapse-free. Four patients with polyostotic disease achieved PR, relapsed rapidly, and died of progressive disease. The relapse site was invariably the skeleton. The survival rate for patients with polyostotic PLB at the time of writing was 25% at 40 months. No severe late treatment-related toxicity was observed. The treatment of patients with monostotic PLB with adriamycin-containing chemotherapy and whole-bone irradiation with 40 Gy, followed by a boost to 45 Gy to bulky sites, prevented local relapse and produced a more favorable outcome than the use of radiotherapy (RT) alone. Patients with multiple adjacent lesions that can be included within a single radiation field with acceptable toxicity should be treated as cases of monostotic PLB.