PURPOSE: This is study of whether 3-D conformal radiotherapy for carcinomas of the ethmoid sinus were better than those treated with conventional 2-D plan. MATERIALS AND METHODS: The 3-D conformal treatment plans were compared with conventional 2-D plans in 4 patients with malignancy of the ethmoid sinus. Isodose distribution, dose statistics, and dose volume histogram of the planning target volume were...

PURPOSE: To evaluate the prognostic factors for disease-free survival and long-term results of radiotherapy for pituitary adenoma. METHODS AND MATERIALS: The study involved a retrospective review of outcome in a series of 27 patients with pituitary adenoma, between 1984 and 1995 at Paik hospital. The study included 20 patients treated with surgery and postoperative radiotherapy and 7 with radiotherapy alone. The...

PURPOSE: This is a retrospective study to evaluate the results of radiation therapy and prognostic factors influencing the results in nasopharyngeal carcinoma. MATERIALS AND METHODS: From October 1989 to May 1996, 56 patients were treated for nasopharyngeal carcinoma at Department of Radiation Oncology. According to stage, patients were distributed as follows: stage I (2), II (13), III (11), IV (30). Twenty-eight...

PURPOSE: To evaluate the role of curative radiotherapy and salvage surgery in patients with T1,T2 glottic cancer. MATERIALS AND METHOD: Between June 1989 and December 1994, 23 patients with early glottic cancer, 18 with T1N0M0 and 5 with T2N0M0, were treated with radiotherapy at Gyeongsang National University Hospital. All patients were male. Median follow-up period was 46 months, and 100% were...

PURPOSE: It is well known that the risk of lymph nodes metastases to head and neck cancers are influenced by the location and size of the primary tumor, as well as the degree and types of histological differentiation. However, data on the statistical analyses of lymph node metastases from the head and neck cancers among Korean population are not available...

PURPOSE: To evaluate our experience in the breast-conserving treatment for early breast cancer with special regard to recurrence pattern and related risk factors. MATERIALS AND METHOD: Two hundred and sixteen patients with AJC stagei and ii breast cancer who received breast conserving treatment between January 1991 and December 1994 were evaluated. Age distribution ranged from 23-80 year old with a median...

PURPOSE: To evaluate the role of postoperative radiation therapy after curative resection of sigmoid colon cancer MATERIALS AND METHODS: From 1988 to 1993, a total of 93 patients with curative resectable sigmoid colon cancer of modified Astler-Coller (MAC) stage B2, B3, C2, C3 was divided into two groups on the basis of those who received radiation treatment and those who...

PURPOSE: To evaluate the efficacy of hyperfractionated radiation therapy in carcinoma of the cervix, especially on huge exophytic and endophytic stage Ib, IIa and IIb. METHODS AND MATERIAl: Fourty one patients with carcinoma of the cervix treated with hyperfractionated radiation therapy at the Department of Therapeutic Radiology, Dongsan Hospital, Keimyung University, School of Medicine from Jul, 1991 to Apr, 1994. According...

PURPOSE: To identify variable prognostic factors and analyse failure patterns in the uterine cervix cancer after radical operation and adjuvant radiotherapy, a retrospective analysis was undertaken. MATERIALS AND METHODS: I analysed one hundred and twenty four patients with uterine cervix cancer, FIGO stage IB, IIA and IIB, treated with radical hysterectomy and pelvic lymph node dissection followed by adjuvant radiotherapy between...

PURPOSE: This study was performed to identify the histopathologic feature by the reevaluation of the pathologic specimen of the cervical tumors and to evaluate the clinical findings and the treatment results of the patients with small cell carcinoma of the cervix treated by radiotherapy. MATERIALS AND METHODS: 2890 patients with cervical carcinoma received radiotherapy at the Department of Radiation Oncology, Yonsei...

PURPOSE: Ovarian dysgerminoma is a highly radiosensitive malignant tumor occurring in young age group. The conventional treatment was total abdominal hysterectomy and bilateral salpingo-oophorectomy followed by radiotherapy. We retrospectively analyzed the treatment results of patients who had received radiotherapy in the era before chemotherapy was widely used. MATERIAL AND METHOD: Twenty two patients with ovarian dysgerminoma were treated at the Department...

PURPOSE: To quantify the movement of lung parenchyma for ICRU 50 Planning Target Volume (PTV) delineation of the lung region. MATERIALS AND METHODS: Fluoroscopic observations and measurements are performed on 10 patients with chest region cancer who have normal pulmonary functions. We have divided the lung region into 12 parts for the right lung, 10 parts for the left lung and...

PURPOSE: When an x-ray beam of small field size is irradiated to target area containing an air cavity, such as larynx, the underdosing effect is observed in the region near the interfaces of air and soft tissue. With a larynx model, air cavity embedded in tissue-equivalent material, this study is intended for examining parameters, such as beam quality, field size,...