• Journal of Yeungnam Medical Science
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• 제34권2호
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• pp.270-274
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• 2017

A nodular density was detected on a chest radiograph taken from a 57-year-old Korean woman who was visiting a hospital for a routine check. Chest computed tomography revealed a 4.8 cm lobulated mass in the right lung and another focal nodular lesion in the left lung; biopsies of both lungs revealed adenocarcinoma. We conducted DNA sequencing and peptide nucleic acid clamping to investigate the potential double primary lung cancer. The results verified that the mass in the right lung had a mutation in the epidermal growth factor receptor, whereas the nodule in the left lung had a wild-type sequence, showing that these two were genetically different cancers from one another. Thus, we demonstrate that genetic testing is useful in determining double primary lung cancer, and we herein report on this case.

• Journal of Gastric Cancer
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• 제12권3호
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• pp.179-186
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• 2012

Purpose: The use of 18F-2-deoxy-2-fluoro-D-glucose positron emission tomography-computed tomography as a routine preoperative modality is increasing for gastric cancer despite controversy with its usefulness in preoperative staging. In this study we aimed to determine the usefulness of preoperative positron emission tomography-computed tomography scans for staging of gastric cancer. Materials and Methods: We retrospectively analyzed 396 patients' positron emission tomography-computed tomography scans acquired for preoperative staging from January to December 2009. Results: The sensitivity of positron emission tomography-computed tomography for detecting early gastric cancer was 20.7% and it was 74.2% for advanced gastric cancer. The size of the primary tumor was correlated with sensitivity, and there was a positive correlation between T stage and sensitivity. For regional lymph node metastasis, the sensitivity and specificity of the positron emission tomography-computed tomography were 30.7% and 94.7%, respectively. There was no correlation between T stage and maximum standardized uptake value or between tumor markers and maximum standardized uptake value. Fluorodeoxyglucose uptake was detected by positron emission tomography-computed tomography in 24 lesions other than the primary tumors. Among them, nine cases were found to be malignant, including double primary cancers and metastatic cancers. Only two cases were detected purely by positron emission tomography-computed tomography. Conclusions: Positron emission tomography-computed tomography could be useful in detecting metastasis or another primary cancer for preoperative staging in gastric cancer patients, but not for T or N staging. More prospective studies are needed to determine whether positron emission tomography-computed tomography scans should be considered a routine preoperative imaging modality.

• Asian Pacific Journal of Cancer Prevention
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• 제16권11호
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• pp.4549-4553
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• 2015

Background: Colorectal carcinoma (CRC) is one of the major causes of cancer death worldwide. Data from the literature indicate differences between the proliferation rate of endothelial cells relative to the morphology growth type, possibly due to origin of specimens (autopsy material, surgery fragments) or quantification methods. Vascular endothelial growth factor (VEGF) is a factor that stimulates the proliferation of endothelial cells. It is expressed in more than 90% of cases of metastatic CRC. Aim: The aim of this study was to evaluate the endothelial cell proliferation and VEGF expression in primary tumors and corresponding liver metastases. Materials and Methods: Our study included 24 recent biopsies of primary tumors and corresponding liver metastases of CRC cases. CD34/Ki67 double immunostaining and RNA scope assay for VEGF were performed. Results: In the primary tumors analysis of VEGFmRNA expression indicated no significant correlation with differentiation grade, proliferative and non-proliferative vessels in the intratumoral and peritumoral areas. In contrast, in the corresponding liver metastases, VEGFmRNA expression significantly correlated with the total number of non-proliferative vessels and total number of vessels. CD34/Ki67 double immunostaining in the cases with poorly differentiated carcinoma indicated a high number of proliferating endothelial cells in the peritumoral area and a low number in the intratumoral area for the primary tumor. Moderately differentiated carcinomas of colon showed no proliferating endothelial cells in the intratumoral area in half of the cases included in the study, for both, primary tumor and liver metastasis. In well differentiated CRCs, in primary tumors, a high proliferation rate of endothelial cells in the intratumoral area and a lower proliferation rate in the peritumoral area were found. A low value was found in corresponding liver metastasis. Conclusions: The absence of proliferative endothelial cells in half of the cases for the primary tumors and liver metastases in moderately differentiated carcinoma suggest a vascular mimicry phenomenon. The mismatch between the total number of vessels and endothelial proliferation in primary tumors indicate that a functional vascular network is already formed or the existence of some mechanisms influenced by other angiogenic factors.

• Journal of Digestive Cancer Research
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• 제3권1호
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• pp.42-44
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• 2015

Anomalous union of the pancreaticobiliary duct (AUPBD) has been shown to predispose to carcinomas of the biliary tract (bile duct and gallbladder) and pancreatic cancer because of chronic recurrent inflammatory reaction due to pancreatic or bile juice refluxes. However, pancreatic duct would be less affected by the bile because of the relatively higher intraductal pressure of the pancreatic duct. We report a case of metachronous pancreatic cancer in AUPBD patient without choledochal cyst who underwent cholecystectomy because of gallbladder cancer.

• Journal of Gastric Cancer
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• 제17권2호
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• pp.120-131
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• 2017

Purpose: Tumor bleeding is a major complication in inoperable gastric cancer. The study aim was to investigate the effects of proton pump inhibitor (PPI) treatment for the prevention of gastric tumor bleeding. Materials and Methods: This study was a prospective double-blind, randomized, placebo-controlled trial. Patients with inoperable gastric cancer were randomly assigned to receive oral lansoprazole (30 mg) or placebo daily. The primary endpoint was the occurrence of tumor bleeding, and the secondary endpoints were transfusion requirement and overall survival (OS). Results: This study initially planned to enroll 394 patients, but prematurely ended due to low recruitment rate. Overall, 127 patients were included in the analyses: 64 in the lansoprazole group and 63 in the placebo group. During the median follow-up of 6.4 months, tumor bleeding rates were 7.8% and 9.5%, in the lansoprazole and placebo groups, respectively, with the cumulative bleeding incidence not statistically different between the groups (P=0.515, Gray's test). However, during the initial 4 months, 4 placebo-treated patients developed tumor bleeding, whereas there were no bleeding events in the lansoprazole-treated patients (P=0.041, Gray's test). There was no difference in the proportion of patients who required transfusion between the groups. The OS between the lansoprazole (11.7 months) and the placebo (11.0 months) groups was not statistically different (P=0.610). Study drug-related serious adverse event or bleeding-related death did not occur. Conclusions: Treating patients with inoperable gastric cancer with lansoprazole did not significantly reduce the incidence of tumor bleeding. However, further studies are needed to evaluate whether lansoprazole can prevent tumor bleeding during earlier phases of chemotherapy (ClinicalTrial.gov, identifier No. NCT02150447).

• Journal of Chest Surgery
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• 제38권11호
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• pp.791-794
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• 2005

식도절제술 후 재건술에서 위장은 가장 흔한 식도 대체물로 사용된다 그러나, 인두 이상의 위치까지 위장을 끌어 올려 연결하는 경우 위장만으로는 길이가 모자라는 경우가 많이 있다. 후두암과 식도암을 동반한 환자에서 후두전절제술과 식도전절제술을 시행하였고 유리공장이식편을 이용하여 경부에서 인두공장위장문합을 시행하였다. 유리공장을 이용하여 문합에 충분한 길이를 확보함으로써 문합부 긴장을 줄이고, 혈액공급을 확보할 수 있었다.

• Journal of Chest Surgery
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• 제36권11호
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• pp.866-869
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• 2003

식도암 환자에서 동시에 일차성 폐암이 발견되는 빈도는 2% 미만에 불과하며, 특히 두 질환 모두 예후가 나쁨으로 인해서 환자들이 근치적 절제술을 받을 기회를 놓치게 되는 경우가 많다. 그러나 환자를 신중히 선택한다면 폐와 식도의 중복암을 동시에 절제함으로써 좋은 결과를 가져올 수 있다고 생각한다. 저자들은 최근 식도와 폐의 일차성 중복암 환자 1예를 경험하였고, 쌍폐엽절제술과 Ivor Lewis 술식으로 일차성 근치적 절제술을 시행하여 좋은 결과를 얻었기에 국내 문헌상으로는 최초로 이를 보고하는 바이다.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제30권4호
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• pp.308-315
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• 2004

Aim: The aim of this study was to investigate the mechanism of promoted skin wound healing in skin defects with primary cultured oral mucosal keratinocytes. Materials and methods: Thirty adult female nude mice weighing $20{\pm}2g$ were used for the experiment. Primary cultured and suspended oral mucosal keratinocytes, labeled with BrdU, were scattered onto $1.5cm{\times}1.5cm$ sized full thickness skin defects in the experimental group(N=15), and no grafts were placed the control group(N=15). They were sacrificed at 3 days, 1 week and 2 weeks after the treatment respectively. Histological examination of each wounds were performed to review the healing progress on measuring the length from the wound margin to regenerating epithelial front. The role of keratinocytes were assessed by double immunohistochemical staining with Anti-BrdU and Anti-cytokeratin AE1/3. Results: In the experimental group the wound was completely covered with regenerating epithelia in 2 weeks, but partially regenerated in the control group. The immunohistochemical studies unexpectedly reveal that most of regenerating epithelial cells were induced from marginal epithelium of the margin, not from the scattered keratinocytes. Conclusion: We could successfully confirm that graft of primary cultured oral mucosal keratinocytes promotes the regeneration of skin defects.

• Radiation Oncology Journal
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• 제4권2호
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• pp.129-133
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• 1986

한 환자에서 두개 이상의 중복암이 발생하는 경우는 매우 드물게 알려져 왔으나 근래에 들어와 치료법의 발달로 환자의 수명이 연장되고 진단법이 발달되면서 그 보고가 증가되고 또한 관심도 높아지고 있는 상태이다. 따라서 이런 중복암을 가진 환자의 특성을 분석함으로써 발생할 수 있는 2차 3차 암의 조기 발견 및 나아가서는 발암 물질과 유전적 요인 등을 찾아 암의 치료 및 예방에 이응 할 수 있겠다. 이에 $1978.7\~1986.8$까지 8년간 서울 대학교 병원에서 중복암으로 진단되어 치료받은 121예를 대상으로 하여 다음과 같은 결과를 얻었다. 전체 발생율은$0.7\%$이 있으며 이중 2중복암이 119례, 3중복암이 2례 있었다. 동시성은 (6개월 이내) 51례, 속발성은 (6개월 이상) 70례이었으며 속발성의 경우 $70\%$이상에서 3년내에 2차 암이 발생했다. Moertel분류에 의한 mvlticentriz은 $11.6\%$로 다소 낮은 빈도를 보였으며 다른 장기에 발생한 중복암 중에서는 위암과 간암, 위암과 직장암의 빈도가 가장 높았다.

• Tuberculosis and Respiratory Diseases
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• 제62권4호
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• pp.318-322
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• 2007

최근 평균수명의 연장과 진단 및 치료 방법의 발달로 원발성 중복암의 발견율이 높아지고 있다. 폐와 간에 발생한 중복암, 특히 동시성 중복암에 대한 보고는 매우 드물다. 저자 등은 만성기침을 호소하는 73세 남자에서 폐의 편평상피세포암을 진단한 후, 복부초음파에서 간 종괴를 발견하여 폐암의 전이를 의심하였으나 FDG-PET에 간 전이가 없어서 초음파 유도로 간 생검을 시행한 결과 간세포암을 진단하여, 폐와 간의 동시성 중복암을 경험하였기에 문헌고찰과 더불어 보고한다.