비인강암의 방사선 치료 성적

이종영(Jong Young Lee)·노준규(John J.K. Loh)·서창옥(Chang Ok Suh)·이연구(Yonu Goo Lee)·홍원표(Won Pyo Hong) 대한방사선종양학회 1988 Radiation Oncology Journal Vol.6 No.1

This study is the retrospective evaluation of ninety-six patients with biopsy-proven carcinoma of nasopharynx treated with radiotherapy at Yonsei University, College of Medicine Radiation Oncology from January 1971 to December 1985. Patient's age ranged from 15 to 71 years with a median age of 49 years. Fifty-two point five percent of local control and 47.5% of actuarial 5 year survival were achieved with radical radiotherapy. Five year survival rate for Stage I & II, III and IV were 75.0%, 74.6% and 41.4%, respectively. Distant metastasis rate was related with N stage (N1 12.5%, N1 0%, N2 23.5%, N3 32.1%) and histologic type (lymphoepithelioma 41.7% squamous cell carcinoma 6.5%) but not with T stage. Thirty-one of sixty-seven patient covered adequate radiation field received induction chemotherapy. However induction chemotherapy does not appear to improve over all survival.

Effect of Radiofrequency Induced Local Hyperthermia on Normal Canine Liver

Chang Ok Suh(서창옥) , John J.K.Loh(노준규) , Jin Sil Seong(성진실) , Sun Rock Moon(문성록) Hyung Sik Lee(이형식) , Hyun Soo Shin(신현수) , Sung Sil Chu(추성실) , Gwi Eon Kim(김귀언) , Chan Il Park(박찬일) ,Eun Kyung Han(한은경) 대한방사선종양학회 1991 Radiation Oncology Journal Vol.9 No.1

간조직에 온열치효를 시행시 출현하는 조직병리학적 소견 및 혈액의 생화학적 소견을 관찰하고자 13마리의 정상 간에 8MHz 라디오파를 이용한 온열치료를 시행하였다. 42.5±0.5°C로 30분간 온열치료를 받은 군 (제1군, n=5), 45±0.5°C로 30분간 온열치료를 받은 군 (제2군, n=5) 및 온열치료를 받지않은 대조군(n=3)으로 나누어 분석하였을때, 혈액의 SGOT의 SGPT는 온열치료를 시행한 두군 공히 증가된 소견을 보였고 제 1군에서는 간세포의 부종소견의 특이한 조직병리학적소견이 관찰되지않아 가역성 변화로 생각되었지만 제2군에서는 간 세포의 심한 괴사소견이 관찰되어 있는 불가역성의 가조직 손상으로 생각되었다. 이상의 결론으로 유추할 때 임상에서 행하여지는 간암의 온열치료시에 정상 가조직의 손상을 가능한 방지하기위하여는 정확한 종괴의 구역에 치료온도의 주의깊은 관찰이 요구된다. In order to assess the effects of radiofrequency-induced local hyperthermia on the normal liver, histopathologic findings and biochemical changes after localized hyperthermia in canine liver were studied. Hyperthemia was externally adminsitered using the Thermotron RF-8 (Yamamoto Vinyter Co., Japan; Capacitive type heating machine) with parallel opposed electrodes. Thirteen dogs were used and allocated into one control group (N=3) and two treatment groups according to the treatment temperature. Group I (N=5) was heated with 42.5±0.5°C for 30 minutes, and Group Ⅱ (N=5) was heated with 45±0.5°C for 15-30 minutes. Samples of liver tissue were obtained through a needle biopsy immediately after hyperthermia and 7, 14, and 28 days after treatment. Blood samples were obtained before treatment and 1, 3, 5, 7, 14 and 28 days after treatment and examined for SGOT, SGPT and alkaline phosphatase. Although SGOT and SGPT were elevated after hyperthermia in both groups (three of five in each group), there was no liver cell necrosis or hyperthermia related mortality in Group Ⅰ. A hydropic swelling of hepatocytes was prominent histologic finding. Hyperthermia with 45°C for 30 minutes was fatal and showed extensive liver cell necrosis. In conclusion, liver damage dy heat of 42.5±0.5°C for 30 minutes is reversible, and liver damage by heat of 45±0.5°C for 30 minutes can be fatal or irreversible. However, these results cannot be applied directly to human trial. Therefore, in order to apply hyperthermic treatment on human liver tumor safely, close observation of temperature with proper thermometry is mandatory. Hyperthermic treatment should be confined to the tumor area while sparing a normal liver as much as possible.

하인두암의 방사선치료 성적

이창걸,노준규,류삼열,박경란,서창옥,김귀언,홍원표,김병수,Lee Chang Gul,Loh John J.K.,Ryu Sam Youl,Park Kyung Ran,Suh Chang Ok,Kim Gew Earn,Hong Won Pyo,Kim Byung Soo 대한방사선종양학회 1988 Radiation Oncology Journal Vol.6 No.1

A rerospective review of fifty patients with carcinoma of hypopharynx treated with $RT{\pm}surgery$ was studied for eleven-year period from 1974 to 1984. Of the 50 patients,46 were pyriform sinus in origin, 4 were posterior pharyngeal wall. Eighty-eight percent of patients were locoregionally advanced(stage III, IV) and 78% of patients presented conical lymphadenopathy. 5-year disease-free survival rate of the pyriform sinus ca. was $25.4\%$ in RT alone group, $80\%$ in combined modality group and $30.6\%$ in overall. Local control rate with RT alone in early stage (II) was excellent $(100\%)$, however combined modality appears to be better for local control$(80\%)$ in advanced stage (III, IV) as compared with that of RT alone group $(32\%).$ On basis of this study, RT alone is effective in terms of local control and functional preservation in treatment of early stage of pyriform sinus ca. while surgery can be reserved for salvage purpose when RT fails and combined modality is recommended in patients with locally advanced stage for better local control and survival.

Effects of Radiofrequency Induced Local Hyperthermia on Normal Canine Liver

서창옥,노준규,신현수,이형식,문성록,성진실,추성실,김귀언,한은경,박찬일,Suh Chang Ok,Loh. John J.K.,Shin Hyun Soo,Lee Hyung Sik,Moon Sun Rock,Seong Jin Sil,Chu Sung Sil,Kim Gwi Eon,Han Eun Kyung,Park Chan Il The Korean Society for Radiation Oncology 1991 Radiation Oncology Journal Vol.9 No.2

간조직에 온열치효를 시행시 출현하는 조직병리학적 소견 및 혈액의 생화학적 소견을 관찰하고자 13마리의 정상 간에 8 MHz 라디오파를 이용한 온열치료를 시 행하였다. $42\pm0.5^{\circ}C$로 30분간 온열치료를 받은 군(제 1 군, n=5), $45\pm0.5^{\circ}C$로 30분간 온열치료를 받은 군(제 2군, n=5) 및 온열치료를 받지않은 대조군(n=3)으로 나누어 분석하였을때, 혈액의 SGOT의 SGPT는 온열치료를 시행한 두군 공히 증가된 소견을 보였고 제 1군에서는 간세포의 부종소견외 특이한 조직병 리학적소견이 관찰되지않아 가역성 변화로 생각되었지만 제 2군에서는 간세포의 심한 괴사소견이 관찰되어 있는 불가역성의 가조직 손상으로 생각되었다. 이상의 결론으로 유추할때 임상에서 행하여지는 간암의 온열치료시에 정상 가조직의 손상을 가능한 방지하기위하여는 정확한 종괴의 구역에 치료온도의 주의깊은 관찰이 요구된다. In order to assess the effects of radiofrequency-induced local hyperthermia on the normal liver, histopathologic findings and biochemical changes after localized hyperthermia in canine liver were studied. Hyperthermia was externally adminsitered using the Thermotron RF-8 (Yamamoto Vinyter Co., Japan; Capacitive type heating machine) with parallel opposed electrodes. Thirteen dogs were used and allocated into one control group (N=3) and two treatment groups according to the treatment temperature. Group I (N=5) was heated with $42.5\pm0.5^{\circ}C$ 30 minutes, and Group II (N=5) was heated with $45\pm0.5^{\circ}C$ for 15-30 minutes. Samples of liver tissue were obtained through a needle biopsy immediately after hyperthermia and T,14, and 28 days after treatment. Blood samples were obtained before treatment and W, 3,5, 7,14 and 28 days after treatment and examined for SGOT, SGPT and alkaline phosphatase. Although SGOT and SGPT were elevated after hyperthermia in both groups (three of five in each group), there was no liver cell necrosis or hyperthermia related mortality in Group 1. A hydropic swelling of hepatocytes was prominent histologic finding. Hyperthermia with $45^{\circ}C$ for 30 minutes was fatal and showed extensive liver cell necrosis. In conclusion, liverdamage dy heat of $42.5\pm0.5^{\circ}C$ for 30 minutes is reversible, and liver damage by heat of $45\pm0.5^{\circ}C$ for 30 minutes can be fatal or irreversible. However, these results cannot be applied directly to human trial. Therefore, in erder to apply hyperthermic treatment on human liver tumor safely, close obsewation of temperature with proper thermometry is mandatory. Hyperthermic treatment should be confined to the tumor area while sparing a normal liver as much as possible.

비인강암의 방사선 치료 성적

이종영,노준규,서창옥,이연구,홍원표,Lee Jong Young,Loh John J.K.,Suh Chang Ok,Lee Youn Goo,Hong Won Pyo 대한방사선종양학회 1988 Radiation Oncology Journal Vol.6 No.1

This study is the retrospective evaluation of ninety-six patients with biopsy-proven carcinoma of nasopharynx treated with radiotherapy at Yonsei University, College of Medicine, Radiation Oncology from January 1971 to December 1985. Patient's age ranged from 15 to 71 years with a median age of 49 years. Fifty-two point five percent of local control and $47.5\%$ of actuarial 5 year survival were achieved with radical radiotherapy. Five year survival rate for Stage I&II, III and IV were $75.0\%,\;74.6\%\;and\;41.4\%$, respectively. Distant metastasis rate was related with N stage $(N1\;12.5\%,\;N1\;0\%,\;N2\;23.5\%,\;N3\;32.1\%$and histologic type (lymphoepithelioma $41.7\%$, squamous cell carcinoma $6.5\%$) but not with T stage. Thirty-one of sixty-seven patient covered adequate radiation field received induction chemotherapy. However induction chemotherapy does not appear to improve over all survival.

대장선암의 치료에 있어 수술후 방사선 치료의 역할

박경호,노준규,서창옥,김동원,Park Kyung Ho,Loh Jonh J.K.,Suh Chang Ok,Kim Dong Won The Korean Society for Radiation Oncology 1988 Radiation Oncology Journal Vol.6 No.1

대장선암의 근본적인 치료는 외과적 절제술로 알려져 있으나 이 경우 직장선암과 마찬가지로 수술 후 국소재발이 문제시되어 왔다. 직장선암의 경우 수술 후 국소재발의 위험성이 볼은 판자에 수술후 방사선치료를 병용함으로써 국소제어율 및 나아가서 생존율까지도 상당히 개선된다고 알려져 있다. 그러나 대장선암의 경우 국소제어율 및 생존율의 개선이 보고되고 있기는 하나 아직 널리 알려져 있지는 못하다. 이에 저자는 1970년 3월부터 1984년 12월까지 대장선암으로 진단받고 일차적으로 근치적 수술을 시행한 후 연세대학교 의과대학 치료방사선과에 내원한 21명의 환자를 후향성 분석하여 다음과 같은 결과를 얻었다. 1. 21명의 환자 중 수술후 방사선 치료를 병용하여 계획대로 무사히 마친 환자는 11명이었다. 2. 수술후 방사선 치료를 병용한 환자들의 전체적 인 국소실패율은 $9\%(1/11)$이었고 병기별로는 B2+B3가(0/4), Cl+C2+C3가 $14\%(1/7)$였고 C1이 0(0/2) B2+C2가 $17\%(1/6)$, B3+C3가 0(0/3)였다. 3. 수술후 방사선 치료를 병용한 환자들의 5년 생존율은 $55\%$였다. Form March 1970 to December 1984, 21 patients treated initially with curative surgery for adenocarcinoma of the colon, referred to the Department of Radiation Oncology, College of Medicine, Yonsei University, were analyzed retrospectively. Thirteen of 21 patients who were considered to be a high risk group (i.e, mainly stage B2 or above), received adjuvant postoperative radiation therapy. However,2 of 13 patients did not complete their courses of radiotherapy as planned because of poor tolerance to radiotherapy or patient's refusal and were excluded from this study. Remaining 8 of 21 patients who did not receive postoperative radiotherapy, presented with recurrence at the time of referral and treated with palliative radiotherapy. In 11 patients with postoperative radiotherapy, overall local failure rate was $9\%$(1/11) and the 5year acturial survival rate was $55\%$. Local failure rates by stage were 0(0/4), $14\%(1/7)$ for stage B2+ B3, C1+C2+C3 respectively and 0(0/2), $17\%(1/6),\;0(0/3)$ for stage C1, B2+C2, B3+C3 respectivly.

대장선암의 치료에 있어 수술후 방사선 치료의 역할

박경호,김동원,노준규,서창옥,Park Kyung Ho,Kim Dong Won,Loh J. K.,Suh Chang Ok The Korean Society for Radiation Oncology 1989 Radiation Oncology Journal Vol.7 No.1

대장선암의 근본적인 치료는 외과적 절제술로 알려져 있으나 이 경우 직장선암과 마찬가지고 수술 후 국소재발이 문제시되어 왔다. 직장선암의 경우 수술후 국소재발의 위험성이 높은 환자에 수술후 방사선 치료를 병용함으로써 국소제어율 및 나아가서 생존율까지도 상당히 개선된다고 알려져 있다. 그러나 대장선암의 경우 국소제어율 및 생존율의 개선이 보고되고 있기는 하나 아직 알려져 있지는 못하다. 이에 저자는 1970년 3월부터 1984년 12월까지 대장선암으로 진단받고 일차적으로 근치적 수술을 시행한 후 연세대학교 의과대학 치료방사선과에 내원한 21명의 환자를 후향성 분석하여 다음과 같은 결과를 얻었다. 1. 21명의 환자 중 수술후 방사선 치료를 병용하여 계획대로 무사히 마친 환자는 11명이었다. 2. 수술후 방사선 치료를 병용한 환자들의 전체적인 국소실패율은 $9\%(1/11)$이었고 병기별로는 B2+B3가 (0/4), Cl+C2+C3가 $14\%$ (1/7)였고 Cl이 0 (0/2) B2+C2가 $17\%$ (1/6), B3+C3가 0(O/3)였다. 3. 수술후 방사선 치료를 병용한 환자들의 5년 생존율은 $55\%$였다. From March 1970 to December 1984, treatment results of 21 patients treated initially with curative surgery for adenoarcinoma of the colon and referred to the Department of Radiation Oncology, College of Medicine, Yonsei University, were analyzed retrospectively. Thirteen of 21 patients who were considered to be at high risk (i.e, stage B2 or above), received postoperative adjuvant radiation therapy. However,2 of 13 patients did not complete their courses of radiotherapy as planned because of poor tolerance to radiotherapy or patient's refusal and were excluded from this study. Remaining 8 of 21 patients who did not receive postoperative radiotherapy, presented with recurrence at the time of referral and treated for palliation. In 11 patients who finished postoperative radiotherapy, overall local failure rate was $9\% (1/11)$ and the 5 year actuarial suwival rate was $55\%$. Local failure rates by stage were 0 (0/4), $14\%$ (1/7) for stage B2+B3, Cl+C2+C3 respectively and 0(0/2), $17\%$ (1/6), 0(0/3) for stage C1, B2+C2, B3+C3 respectively.

Treatment of Carcinoma of the Uterine Cervix with High-Dose-Rate Intracavitary Irradiation using Ralstron

서창옥,김귀언,노준규,Suh Chang Ok,Kim Gwi Eon,Loh John J.K. The Korean Society for Radiation Oncology 1990 Radiation Oncology Journal Vol.8 No.2

1979년 5월부터 1981년 12월까지 총 524명의 자궁경부암 환자가 근치적 목적하에 방사선 치료를 받았다. 524명의 환자중, 356명이 코발트 선원을 사용한 원격 조정 아프터로딩 고선량률 강내조사 시스템 (Ralstron)으로써 치료받았으며 168명의 환자는 라듐 선원을 사용한 저선량률 강내 조사를 받았다. 외부조사는 골반부 전체에 총 40-50 Gy가 주어졌으며, 이어서 A지점에 10-13번에 걸쳐 30-39 Gy의 강내 조사를 시행하는 치료지침이 사용되었다. 강내조사는 3 Gy씩, 일주일에 세번 주어졌다. 고선량률 강내조사를 받은 군에서의 5년 실제생존률은 IB기 (N=20)가 $77.6{\%}$, II기 (N=182)가 $68.2{\%}$ 그리고 III기 (N=148)가 $50.9{\%}$였다. 저산량률 강내조사군에서의 5년 생존률은 IB기 (N=22)가 $87.5{\%}$, II기 (N=91)가 $66.3{\%}$, 그리고 III기 (N=52)가 $55.4{\%}$였다. 생존률은 병기에 따라서는 통계학적으로 유의한 차이를 보였지만, 두 강내조사군 간에는 유의한 차이가 없었다. 방사선치료후 내장의 후기 합병증은 고선량률 강내조사 군에서 $3.7{\%}$, 저산량률 강내조사군은 $8.4{\%}$에서 관찰되었다. 그러나 외과적 치료가 필요할 만큼 심한 합병증은 없었다. 방광에서 발생한 합병증의 빈도는 고선량률 강내조사군이 $1.4{\%}$, 저선량률 강내조사군은 $2.4{\%}$였다. 고선량률 강내조사의 시술은 외래 환자에 시행하기에 기술적으로 간단하고 쉬우며 마취가 필요없고, 환자가 매우 잘 견딘다. 담당자에 대한 방사선 피폭도 저선량률 강내조사에 비해 사실상 거의 없다. 고선량률 강내조사의 경우 치료시간이 짧기 때문에 주어진 시간내에 더 많은 환자를 치료할 수 있다. 따라서 많은 환자를 치료해야 되는 암센터의 경우, 고선량률 강내조사 시스템이 훨씬 더 권장되어 진다. 그러나 더욱 향상된 결과를 얻기 위하여, 다른 치료 방식으로 광범위한 연구를 통해, 고선량률 강내조사의 적절한 선량-분할조사 계획과 외부조사와 강내조사의 적절한 배합이 이루어져야 할 것이다. From May 1979 through December 1981 a total of 524 patients with carcinoma of the uterine cervix were treated by radiation therapy with curative intent. Among the 524 patients, 350 were treated with a high-dose-rate (HDR), remote-controlled, afterloading intracavitary irradiation (ICR) system using a cobalt source (Ralstron), and 168 patients received a low-dose-rate (LDR) ICR using a radium source. External beam irradiation with a total dose of 40-50 Gy to the whole pelvis followed by intracavitary irradiation with a total dose of 30-39 Gy in 10-13 fractions to point A was the treatment protocol. ICR was given three times a week with a dose of 3 Gy per fraction. Five-year actuarial survival rates in the HDR-ICR group were $77.6{\%}$ in stage IB (N=20), $68.2{\%}$ in stage II (N=182), and $50.9{\%}$ in stage III (N=148). In LDR-ICR group, 5-year survival rates were $87.5{\%}$ in stage IB (N=22), $66.3{\%}$ in stage II (N=91), and $55.4{\%}$ in stage III (N=52). Survival rates showed a statistically significant difference by stage, but there was no significant difference between the two ICR groups. Late bowel complications after radiotherapy were noted in $3.7{\%}$ of the HDR-ICR group and $8.4{\%}$ of the LDR-ICR group. There was no severe complication requiring surgical management. The incidence of bladder complications was $1.4{\%}$ in the HDR-ICR group and $2.4{\%}$ in the LDR-ICR group. The application of HDR-ICR was technically simple and easily performed on an outpatient basis without anesthesia, and the patients tolerated it very well. Radiation exposure to personnel was virtually nil in contrast to that of LDR-ICR. Within a given period of time, more patients can be treated with HDR-ICR because of the short treatment time. Therefore, the HDR-ICR system is highly recommended for a cancer center, particularly one with a large number of patients to be treated. In order to achieve an improved outcome, however, the optimum dose-fractionation schedule of HDR-ICR and optimum combination of intracavitary irradiation with external beam irradiation should be determined through an extensive protocol.

Photon Energy Dependence of the Sensitivity of LiF TLDs Loaded with Thin Material

민병민,김수길,노준규,조영갑,Min Byongim J,Kim Sookil,Loh John J.K,Cho Young Kap The Korean Society for Radiation Oncology 1999 Radiation Oncology Journal Vol.17 No.3

목적 : 얇은 박막을 위에 얹은 TLD 선량계의 반응 값에 영향을 미치는 인자를 조사하였고, 특히, 금속박막을 얹은 TLD 선량계의 광자에너지와 표면 흡수선량에 대한 의존성을 조사하였다. 방법 및 재료 : 본 연구에서는 TLD-100과 TLD-100 위에 얹은 Slt은 물질로는 주석, 금, 그리고 TE 플라스틱 판을 사용하였다. 각 금속 박막의 두께는 0.1 mm, TE 플라스틱 판의 두께는 1 mm였고 각 박막의 면적은 TLD-100의 면적과 같이 하였다. 방사선치료에 많이 산이는 6 MV에서 15 MV사이의 광자에너지에 대한 TLD-100의 반응감도와 금박막을 얹은 TLD-100의 반응감도, 그리고 주석 박막을 얹은 TLD-100의 반응감도를 비교해 보았다. 결과 : 금속 박막을 얹은 TLD의 경우 표면 흡수선량의 증가가 명백히 나타나고, 금 박막을 얹은 TLD의 경우 10MV에서 정상 TLD보다 약 1.83배 정도 과잉 반응하는 것으로 관측되었으며, 흡수선량에 따른 반응감도의 변화는 주석을 얹은 TLD의 경우가 가장 작았다 금속 박막을 얹은 TLD의 일반 TLD에 대한 상대 반응감도는 에너지에 대한 의존성을 거의 나타내지 않았다. 그리고 311은 박막의 조직에 대한 등가 두께에 따라 반응감도가 증가하였다. 결론 : 금속박막을 얹은 TLD 선량계의 반응값이 고 에너지(6-15 MV)에 대한 의존성을 거의 나타내지 않았으며, 흡수선량에 대한 선형성도 뛰어난 것으로 관측되었다. 따라서 금속박막을 얹은 TLD 선량계는 매우 작은 크기의 광자빔과 표면흡수선량의 측정에 매우 적합한 것으로 사료된다. Purpose : An investigation has been carried out on the factors which affect the response reading of thermoluminescent dosimeters (TLD-100) loaded with thin material in high energy Photon. The aim of the study was to assess the energy response of TLD-100 to the therapeutic ranges of photon beam. Materials and Methods : In this technique, TLD-100 (abbreviated as TLD) chips and three different thin material (Tin, Gold, and Tissue equivalent plastic plate) which mounted on the TLD chip were used in the clinical photon beam. The thickness of each metal plates was 0.1 mm and TE plastic plate was 1 mm thick. These compared with the photon energy dependence of the sensitivities of TLD (normal chip), TLD loaded with Tin or Gold plate, for the photon energy range 6 MV to 15 MV, which was of interest in radiotherapy. Results : The enhancement of surface dose in the TLD with metal plate was clearly detected. The TLD chips with a Gold plate was found to larger response by a factor of 1.83 in 10 MV photon beam with respect to normal chip. The sensitivity of TLD loaded with Tin was less than that for normal TLD and TLD loaded with Gold. The relative sensitivity of TLD loaded with metal has little energy dependence. Conclusion : The good stability and linearity with respect to monitor units of TLD loaded with metal were demonstrated by relative measurements in high energy Photon ($6\~15$ MV) beams. The TLD laminated with metals embedded system in solid water phantom is a suitable detector for relative dose measurements in a small beam size and surface dose.

편도선 암의 방사선 치료

성진실,김수곤,서창옥,김귀언,노준규,Seong J. S.,Kim S. G.,Suh C. O.,Kim G. E.,Loh J. K. The Korean Society for Radiation Oncology 1986 Radiation Oncology Journal Vol.4 No.1

1971년 1월부터 1980년 12월까지 연세암센터에서 방사선치료를 받은 36예의 편도선암 환자군을 대상으로 후향성 분석을 통해 임상적 고찰 및 치료결과를 살펴 보았다. 환자의 $75\%$는 초진시 이미 진행된 병기에 속하였고, 청부 임파절 전이율은 $64\%$였다. 환자의 $19\%$에서는 양측성 경부 임파절 전이가 있었다. 3년 국소치유율은 $T_1$에서 $88\%$, $T_2$에서 $46\%$, $T_3$에서 $25\%$였고 $T_4$에서는 $11\%$에 불과했다. 경부 임파절 전이의 치유율은 $N_0\;와\;N_1$인 경우가 $87\%$였고 $N_2\;와\;N_3$에서 $16\%$로서 뚜렷한 차이를 보였다. 원발병소와 경부 임파절 전이의 정도가 심할수록 예후가 좋지 않았고 전 환자의 3년 국소치유율은 $42\%$였다. Thirty-six patients with carcinoma of the tonsillar region treated with radical radiotherapy at Yonsei Cancer Center between Jan. 1971 and Dec. 1980 were retrospectively reviewed. The purpose of this study is to evaluate the clinical characteristics and the treatment results. Seventy-five per cent of patients were in advanced stage when they were first seen. Incidence of nodal involvement at the time of initial presentation was $64\%$. Bilateral nodal involvement was found in $19\%$ of cases. Three-year local control rates for T1, T2, T3, and T4 were $88\%,\;46\%,\;25\%,\;and\;11\%$, respectively. Advanced neck nodes were poorly controlled $(N1\;70\%,\;N2\;20\%,\;N3\;12\%)$. The prognosis is mainly affected by the status of the primary and neck nodes Overall three-year local control rate was $42\%$.