• Journal of Chest Surgery
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• 제31권2호
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• pp.186-189
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• 1998

악성 간엽종은 유아와 태생기에서 매우 드문 종양이다. 악성간엽종은 성인에서 극히 드물고 섬유조직이외의 둘 또는 그 이상의 간엽성분으로 구성된 종양으로 결체조직의 어떤 형태로도 분화할 가능성이 있는 태생기 간엽에서 기원한다고 생각된다. 환자는 61세 남자로 2개월 전 가래를 동반한 기침을 주소로 검사를 받던 중 우폐상부에 매우 큰 종괴를 보이는 암종으로 입원하였다. 환자는 우폐상부 미세침윤조직검사상 편평상피세포암 의심하에 우전폐절제술을 받았다. 수술장 소견상 종괴는 흉벽과 심하게 유착되었으며 우폐하부까지 침습된 소견을 보이는 악성간엽종으로 진단되었다. 환자는 수술후 5,000rad의 방사선 조사를 받고 수술후 6개월째인 현재까지 재발징후없이 경과 관찰중이다.

• Journal of Chest Surgery
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• 제35권5호
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• pp.381-386
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• 2002

배경 및 목적: 기관지 유암종은 전체 폐암의 약 2%를 차지하며 전형적 유암종과 이형성 유암종으로 나누어진다. 이형성 유암종은, 신경 내분비성 폐암의 범주에서 양끝을 차지하는, 낮은 악성도의 전형적 유암종과 높은 악성도의 소세포 폐암의 중간형으로 여겨지고 있다. 이형성 유암종의 수술 범위, 수술 후 전신적인 치료의 필요성에 관해서 상반되는 주장이 있다. 이에 본원에서 수술 받은 기관지 유암종 환자들을 대상으로 후향적 연구를 시행하였다. 대상 및 방법: 1990년부터 2000년까지 연세의료원에서 15명의 기관지 유암종 환자가 수술 치료를 받았다. 그중 전형적 유암종이 10명, 이형성 유암종이 5명이었다. 병리학적 진단은 WHO/IASLC(1999)의 기준에 따랐다. 결과: 수술은 전폐 절제술 3예, 폐엽절제술 11예, 구획 절제술 1예였다. 전형적 유암종의 경우 1명(10%)에서 국소 림프절 전이를 보였고, 이형성 유암종의 경우 3명(70%)에서 종격동 림프절 전이를 나타내었다. 수술 후 원격 전이는 전형적 유암종에서는 1명(10%)이었으나, 이형성 유암종에서는 4명(80%)에서 나타났다(p=0.017). 수술 후 5년 생존율은 전형적 유암종에서는 100%인 반면, 이형성 유암종에서는 20%로 통계학적으로 유의하게 전형적 유암종의 생존율이 높았다(p=0.0039). 결론: 이형성 유안종의 경우 진단 당시부터 종격동 림프절 전이가 많고 수술 후 생존율도 낮으므로, 비소세포성 폐암에 준하여 폐엽절제술 이상의 수술을 시행하고 종격동 림프절 전이가 있는 경우에는 수술 후 항암화학 요법이 필요할 것으로 생각된다.

• Journal of Gastric Cancer
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• 제7권2호
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• pp.102-106
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• 2007

위에 발생하는 유암종(carcinoid tumor)은 위저부에 있는 장크롬친화 유사 세포(enterochromaffine-like cell)의 증식에 의해 발생하는 종양이다. 위유암종은 모든 위 신생물의 2% 이내로 드문 질환이나 최근 발생률이 증가하고 있다고 한다. 저자들은 다발성 용종의 형태로 발현된 위유암종을 1예 경험한 바 있어 이를 보고하는 바이다. 29세 여자가 3년 전 실신을 주소로 외부병원을 방문하여 시행한 혈액검사 상 혈색소 6.0 g/dl로 측정되었다. 위내시경 상 출혈을 동반한 용종성 병변이 관찰되었고, 내시경적 결찰술로 지혈하였다. 당시 시행한 병리조직 검사 상 유암종으로 진단되었다. 추적 관찰 중 용종성 병변의 출혈로 인한 철결핍성 빈혈이 계속되어 본원으로 전원되었다. 위내시경 상 중체부에서 분문부에 걸쳐 20개 이상의 크기가 다양한 용종성 병변들이 관찰되었다. 혈색소 수치는 9.0 g/dl이었다. 출혈을 동반한 다발성 용종성 위유암종 진단 하에 위전절제술을 시행하였다. 조직검사 결과 위유암종으로 진단되었고 림프절 전이는 없었다. 수술 18개월 후 혈색소 12.8 g/dl로 측정되었고 복부 초음파 상 재발 소견은 없었다. 본 증례와 같이 위에 다발성으로 발생한 용종 형태의 유암종이 지속적인 출혈을 동반하여 만성적인 빈혈을 유발하는 경우 적극적인 수술적 치료를 고려해야 한다.

• Journal of Gastric Cancer
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• 제18권1호
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• pp.30-36
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• 2018

Purpose: We investigated complications after laparoscopic sentinel basin dissection (SBD) for patients with gastric cancer who were enrolled in a quality control study, prior to the phase III trial of sentinel lymph node navigation surgery (SNNS). Materials and Methods: We analyzed prospective data from a Korean multicenter prerequisite quality control trial of laparoscopic SBD for gastric cancer and assessed procedure-related and surgical complications. All complications were classified according to the Clavien-Dindo Classification (CDC) system and were compared with the results of the previously published SNNS trial. Results: Among the 108 eligible patients who were enrolled in the quality control trial, 8 (7.4%) experienced complications during the early postoperative period. One patient with gastric resection-related duodenal stump leakage recovered after percutaneous drainage (grade IIIa in CDC). The other postoperative complications were mild and patients recovered with supportive care. No complications were directly related to the laparoscopic SBD procedure or tracer usage, and there were no mortalities. The laparoscopic SBD complication rates and patterns that were observed in this study were comparable to those of a previously reported trial. Conclusions: The results of our prospective, multicenter quality control trial demonstrate that laparoscopic SBD is a safe procedure during SNNS for gastric cancer.

• Asian Pacific Journal of Cancer Prevention
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• 제15권13호
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• pp.5355-5358
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• 2014

Background: To assess the role of sonographic endometrial thickness and hysteroscopic polyp size in predicting premalignant and malignant polyps in postmenopausal women. Materials and Methods: A total of 328 postmenopausal women with abnormal uterine bleeding and thickened endometrium underwent operative hysteroscopy due to detection of endometrial polyps were included in this retrospective study. Preoperative endometrial thickness measured by transvaginal ultrasonography and polyp size on hysteroscopy were noted. Hysteroscopic resection with histology was performed for endometrial polyps. Endometrial thickness and polyp size were evaluated on the basis of final diagnosis established by histologic examination. Receiver operator characteristic curves were calculated to assess the sensitivity, specificity, positive predictive value, negative predictive value and diagnostic accuracy of endometrial thickness and polyp size for detecting pemalignant and malignant polyps. Results: Premalignant and malignant polyps were identified in 26 (7.9%) of cases. Sonographic measurement showed a greater endometrial thickness in cases of premalignant and malignant polyps when compared to benign polyps. On surgical hysteroscopy, premalignant and malignant polyps were also larger. Endometrial thickness demonstrated a sensitivity of 53.8%, specificity of 85.8%, PPV of 24.6% and NPV of 95.6% at a cut-off limit of 11.5 mm with diagnostic accuracy of 83.2%. Polyp size has a diagnostic accuracy of 94.8% with a sensitivity of 92.3%, specificity of 95.0%, PPV of 61.5% and NPV of 99.3% at a cut-off point of 19.5mm. Conclusions: Endometrial thickness measured by transvaginal ultrasonography is not sufficient in predicting premalignant and malignant endometrial polyps in postmenopausal women with abnormal uterine bleeding and thickened endometrium. Polyp size on hysteroscopy is a more accurate parameter, because of better sensitivity and specificity. However, while polyp size ${\geq}19.5mm$ seems to have a great accuracy for predicting premalignancy and malignancy, histologic evaluation is still necessary to exclude premalignant and malignant polyps.

• Asian Pacific Journal of Cancer Prevention
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• 제15권13호
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• pp.5337-5341
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• 2014

Background: The standard therapy for stage I rectum cancer is surgical resection. Currently, there is no strong evidence to suggest that any type of adjuvant therapy is beneficial. The risks of local relapse and distant metastasis are higher in rectal tumors. Therefore, while there is no clearly defined absolute indication for adjuvant therapy in lymph node negative colon cancers, rectum tumors that are T3N0 and higher require adjuvant treatment. Due to the more aggressive nature of rectal cancers, we explored the clinical and pathologic factors that could predict the risk of relapse in Stage I (T1-T2) disease and whether there was any progression-free survival benefit to adjuvant therapy. Materials and Methods: This multicenter study was carried out by the Anatolian Society of Medical Oncology. A total of 178 patients with rectal cancers who underwent curative surgery between January 1994 and August 2012 in 13 centers were included in the study. Patient demographics, including survival data and tumor characteristics were obtained from medical charts. Results: The median age was 58 years (range 26-85 years). Most tumors were well or moderately differentiated. For adjuvant treatment, 13 patients (7.3%) received radiotherapy alone, 12 patients (6.7%) received chemotherapy alone and 15 patients (8.4%) were given chemoradiotherapy. Median follow up was 29 months (3-225 months). Some 42 patients (23.6%) had relapse during follow up; 30 with local recurrence (71.4%) whereas 12 (28.6%) were distant metastases. Among the patients, 5-year DFS was 64% and OS was 82%. Mucinous histology and receiving adjuvant therapy were found to have statistically insignificant correlations with relapse and survival. Conclusions: In our retrospective analysis, approximately one quarter of patients exhibited either local or systemic relapse. The rates of relapse were slightly higher in the patients who had no adjuvant therapy. There may thus be a role for adjuvant therapy in high-risk stage I rectal tumors.

• Journal of Korean Neurosurgical Society
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• 제52권6호
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• pp.534-540
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• 2012

Objective : Brainstem arteriovenous malformation (AVM) is rare and radiosurgical management is complicated by the sensitivity of the adjacent neurological structures. Complete obliteration of the nidus is not always possible. We describe over 20 years of radiosurgical procedures for brainstem AVMs, focusing on clinical outcomes and radiosurgical techniques. Methods : Between 1992 and 2011, the authors performed gamma knife radiosurgery (GKRS) in 464 cerebral AVMs. Twenty-nine of the 464 patients (6.3%) reviewed had brainstem AVMs. This series included sixteen males and thirteen females with a mean age of 30.7 years (range : 5-71 years). The symptoms that led to diagnoses were as follows : an altered mentality (5 patients, 17.3%), motor weakness (10 patients, 34.5%), cranial nerve symptoms (3 patients, 10.3%), headache (6 patients, 20.7%), dizziness (3 patients, 10.3%), and seizures (2 patients, 6.9%). Two patients had undergone a previous nidus resection, and three patients had undergone a previous embolization. Twenty-four patients underwent only GKRS. With respect to the nidus type and blood flow, the ratio of compact type to diffuse type and high flow to low flow were 17 : 12 and 16 : 13, respectively. In this series, 24 patients (82.8%) had a prior hemorrhage. The mean target volume was 1.7 $cm^3$ (range 0.1-11.3 $cm^3$). The mean maximal and marginal radiation doses were 38.5 Gy (range 28.6-43.6 Gy) and 23.4 Gy (range 18-27 Gy), and the mean isodose profile was 61.3% (range 50-70%). Results : Twenty-four patients had brainstem AVMs and were followed for more than 3 years. Obliteration of the AVMs was eventually documented in 17 patients (70.8%) over a mean follow-up period of 77.5 months (range 36-216 months). With respect to nidus type and blood flow, the obliteration rate of compact types (75%) was higher than that of diffuse types (66.7%), and the obliteration rate of low flow AVMs (76.9%) was higher than that of high flow AVMs (63.6%) (p<0.05). Two patients (6.9%) with three hemorrhagic events suffered a hemorrhage during the follow-up period. The annual bleeding rate of AVM after GKRS was 1.95% per year. No adverse radiation effects or delayed cystic formations were found. Conclusion : GKRS has an important clinical role in treatment of brainstem AVMs, which carry excessive surgical risks. Angiographic features and radiosurgical techniques using a lower maximal dose with higher isodose profiles are important for lesion obliteration and the avoidance of complications.

• Radiation Oncology Journal
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• 제12권1호
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• pp.33-42
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• 1994

1982년부터 1991년까지 경희대학병원 치료방사선과에서 원발성 중추신경계 림프종으로 확진되어 방사선치료를 받은 16명의 환자를 대상으로 치료결과를 후향적으로 분석하였다. 가장 흔한 세포아형은 large, noncleaved cell과 B cell의 immunoblastic 림프종이었으며 측두엽과 심핵부위에 호발하였다. 치료는 환자를 생검 또는 절제술후 전뇌에 40 Gy(range=30-50 Gy)를 방사선 조사하였으며 원발병소에 15-20 Gy를 추가조사하였다. 16명의 환자중 14명은 방사선치료후 2개월에서 49개월 사이에 사망하였으며, 2명은 재발없이 각각 8개월과 22개월째 생존하고 있다. 1년 및 2년생존율은 각각 55.6$ \% $와 34.7$ \% $이었고, 중간 생존기간은 12개월이었다. 16명의 환자중 재발된 11명을 분석하였다. 방사선치료후 원발부위에 재발은 드물었으나 전뇌조사에서 불구하고 다른 부위에서 재발하였다. 재발율은 뇌에서 68.7$ \% $ (l1/16)이고 척추에서 25.0$ \% $(4/16)이었다. 나이, 성별 발생부위, 병소수, 방사선치료선량등은 각각 생존율과 무관하였다. 이와 같은 결과로 중추신경계 림프종은 방사선 치료의 초기반응은 양호하나 통상적인 방사선치료만으로는 조절이 어려운 질환이다. 따라서 분할치료방법에 의한 방사선량 증가와 항암제의 병용으로 중추신경계 림프종에 대한 치료효과를 향상시키리라 기대한다.

• Radiation Oncology Journal
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• 제37권3호
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• pp.224-231
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• 2019

Purpose: To investigate the patterns of recurrence in patients with neuroblastoma treated with radiation therapy to the primary tumor site. Materials and Methods: We retrospectively analyzed patients with high-risk neuroblastoma managed with definitive treatment with radiation therapy to the primary tumor site between January 2003 and June 2017. These patients underwent three-dimensional conformal radiation therapy or intensity-modulated radiation therapy. A total of 14-36 Gy was delivered to the planning target volume, which included the primary tumor bed and the selected metastatic site. The disease stage was determined according to the International Neuroblastoma Staging System (INSS). We evaluated the recurrence pattern (i.e., local or systemic), progression-free survival, and overall survival. Results: A total of 40 patients with high-risk neuroblastoma were included in this study. The median patient age was 4 years (range, 1 to 11 years). Thirty patients (75%) had INSS stage 4 neuroblastoma. At the median follow-up of 58 months, there were 6 cases of local recurrence and 10 cases of systemic recurrence. Among the 6 local failure cases, 4 relapsed adjacent to the radiation field. The other 2 relapsed in the radiation field (i.e., para-aortic and retroperitoneal areas). The main sites of distant metastasis were the bone, lymph nodes, and bone marrow. The 5-year progression-free survival was 70.9% and the 5-year overall survival was 74.3%. Conclusion: Radiation therapy directed at the primary tumor site provides good local control. It seems to be adequate for disease control in patients with high-risk neuroblastoma after chemotherapy and surgical resection.

• 한국임상수의학회지
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• 제27권3호
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• pp.232-239
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• 2010

개에서 자연발생한 유선종양으로부터 채취, 배양된 세포주 2개를 확립하고 특성을 분석하였다. 9세 령의 퍼그 종 개와 동일연령의 토이푸들 종의 개에 발생한 종양을 무균 상태를 유지하여 수술적으로 채취한 후 primary culture를 실시하였다. 두 종양의 조직병리검사에서는 각각 선암종과 혼합암종이 진단되었으며, 이후 두 마리 모두 전이로 인해 폐사하였다. 배양된 종양세포는 1년 이상의 기간 동안 60회 이상 계대를 반복하면서 형태학적으로 일관성을 유지하였고, 특성분석을 위해 광학현미경검사, 성장곡선 산출, 배가 시간 계산, 누드 마우스에 이종이식, 면역조직 화학검사를 실시하였다. 각 세포주는 다각형의 긴 세포형태를 보였으며, 세포질 연결을 형성하였으며, 배가 시간은 각각 47.1 시간과 18.6 시간이었다. 암컷 누드마우스의 등 부위에 피하이식 후 4주 이내에 10마리 중 9마리에서 촉진이 가능한 종괴의 형성이 확인되었으며, 면역조직화학검사 시 한 세포주에서는 keratin과 cytokeratin 8에서 다른 세포주에서는 smooth muscle actin과 cytokeratin 8에서 강한 염색성이 확인되었다. 두 세포주는 개의 유선종양의 시험관내, 체내 연구에 있어 모두 유용하게 사용될 수 있을 것으로 생각된다.