Successful Treatment of Feline Nasopharyngeal Lymphoma by Hypofractionated Radiation Therapy After Surgical Debulking in a Cat

이희천,황태성 한국임상수의학회 2024 한국임상수의학회지 Vol.41 No.2

Abstract A 3-year-old spayed female Russian blue cat was presented for dyspnea, nasal discharge, and stertorous breathing. Plain thoracic radiography revealed no specific findings. Computed tomography (CT) was performed to differentiate upper airway tract disorders. It revealed the presence of an iso-attenuating mass measuring 10.0 × 7.9 × 15.6 mm, with mild homogeneous contrast enhancement occupying the rostral nasopharynx. The mass was surgically debulked via a longitudinal incision in the soft palate. Histopathological and immunohistochemistry analysis of the surgically excised mass revealed CD3–/CD79a+ B cell lymphoma with an incomplete margin. The patient underwent hypofractionated radiation therapy, receiving a total of 36 Gray (Gy) in 6 Gy fractions over a six-week period. A follow-up CT examination was performed after 27 months of irradiation and the patient was confirmed to have achieved a complete response. There were no complications related to irradiation. The patient was alive for 40 months without recurrence. This study suggests that hypofractionated radiation therapy combined with surgical debulking could be considered as a treatment option for feline nasopharyngeal lymphoma.

A Case of Ependymoma in a Dog; Computed Tomography, Histopathological and Immunohistochemical Findings

이희천,김나현,조규완,정해원,문종현,김지현,서정향,정동인 한국임상수의학회 2014 한국임상수의학회지 Vol.31 No.2

Abstract : An 11-year-old intact female Maltese was referred because of 1 week history of cluster seizure episodes. Based on brain CT scan, brain tumor was strongly suspected. The patient was euthanized according to client’s requestand we performed necropsy after euthanasia. The gross findings of the postmortem coronal sections of the brain showedthat the mass was relatively well-demarcated, reddish in colored, and was present inside the left lateral ventricle andcompressed adjacent tissues. The tumor mass had 2 distinct histopathological features: perivascular pseudorosette-likestructures and a whirl-like arrangement of fibrillary cells. The immunohistochemical profile showed strong GFAPpositivity and moderate S-100 expression, sparsely dotted staining with Ki-67. Based on the histopathological andimmunohistochemical findings, the present case diagnosed to ependymoma.

Single Extrahepatic Portosystemic Shunt in 3 Dogs; CT Findings and Progress

이희천,지창무,문종현,조규완,김영기,강병택,정동인 한국임상수의학회 2012 한국임상수의학회지 Vol.29 No.6

Two Maltese (2-year-old, intact female and 4-month-old, intact female) and a Pekingese (10-year-old, intact male) dogs were referred due to vomiting, anorexia, head-pressing and hypersalivation. Physical examinations, complete blood count, serum chemical analysis, radiography, ultrasonography and computed tomography (CT) were evaluated. Laboratory findings in these dogs included high hepatic enzyme, serum bile acid and ammonia concentration. Microhepatia was found on abdominal radiographs in two dogs. The existence of portosystemic shunt was presented in abdominal ultrasonography. The shunt vessel was identified in all dogs by CT imaging. Based on three-dimensional CT reconstruction, the origin and termination of each shunt vessel were defined certainly. In consequence, each dog was diagnosed single extrahepatic portosystemic shunt. After diagnosis, surgical treatment was performed in all dogs. This case report describes clinical finding, imaging characteristics, and three-dimensional CT imaging of single extrahepatic portosystemic shunt cases.

Multiple transesterifications in a reactive dividing wall column integrated with a heat pump

이희천,장원준,이재우 한국화학공학회 2019 Korean Journal of Chemical Engineering Vol.36 No.6

This study addresses a reactive dividing wall column (RDWC) integrated with a vapor recompression heat pump (VRHP). The reaction applied to the system contains two consecutive transesterifications of dimethyl carbonate (DMC) and ethanol, which yields methanol (MeOH) as a by-product, ethyl methyl carbonate as an intermediate product and diethyl carbonate (DEC) as the final desired product. DEC is the only stable node of the five component reacting mixture. The location of the reaction region and feed stages affects the purity of the top product because the unstable node product is not pure MeOH but DMC-MeOH azeotrope. The VRHP pressurizes the top gas product stream and the compressed gas provides heat to the bottom stream of the ethanol recovery section. The optimization procedure minimizes the power consumption of the compressor with respect to the gas flow rate. The energy consumption in the RDWC integrated with a VRHP is reduced by 32.1% and the total utility cost is also cut by 21.6% compared with the conventional RDWC

정신여자고등학교

이희천 대한사립학교장회(구 대한사립중고등학교장회) 2014 私學 Vol.135 No.-

워터프론트의 관광개발 전략에 관한 연구

이희천,박인규,전기환 대한관광경영학회 2011 觀光硏究 Vol.26 No.2

최근 수변공간을 활용한 도시계획은 도시관광, 휴식공간, 공공공간의 활성화를 위한 도시 관광매력물로 매우 중요한 역할을 하고 있다. 따라서 본 연구에서는 낙동강 구미지역의 수변관광개발에 따른 전략을 제시함으로써 지역발전과 주민들의 삶을 향상시키면서 관광객들에게 더욱 시민친화적인 문화관광지로서 발전방향을 제시하였다. 연구결과 수변관광개발을 통하여 새로운 도시공간의 생성이 가능하며, 수변공간의 접근성이 개선으로 공공커뮤니티로 다기능 역할 증가, 수변공간을 통한 도시 이미지 제고, 이벤트 및 프로그램 활성화가 이루어질 수 있다. 하지만 이러한 관광콘텐츠 효과를 높이기 위해선 다음 방안이 선결되어야 한다. 첫째, 수변관광은 종합적이고 체계적으로 진행되어야 한다. 둘째, 민간인 참여로 지역활성화를 유도해야 한다. 셋째, 휴식공간과 도시기능이 조화를 이루어야 한다. 넷째 환경친화적인 도시민의 생활공간으로 변해야 한다. The metropolitan city plan of utilization of largest water front may energize the urban tourism, recreational space or relaxation, public space and there should be focus for the importance of urban tour attractions to energize it. In this case study of the largest water front development of the Nak-dong River, we way focus to upgrade the public urban life with local development including citizen friendly approach for tourists and to achieve this objective, we need to follow the cultural tourism development. In the conclusion, during the period of the largest water front development of the Nak-dong River, we may study more about the process to upgrade the effects of tourism contents. First of all, the largest water front should be develop collectively with systematically. Secondly, local urban energize or upgrading work should be done by local people participation system. Thirdly, the space for relaxation and infrastructures of urban should be upgrade. Forth, the city should be develop and change the life space for environment friendly urban people.

산림경영, 휴양 분야 ( 정보통신센터 멀티미디어실 2 ) : 자연공원지역의 식물군을 통한 자연환경평가에 관한 연구

이희천,김세천 한국임학회 2000 한국임학회 학술발표논문집 Vol.2000 No.-

Gastric Adenoma in the Pyloric Outflow Tract of a Shih-tzu Dog

이희천,권도형,문종현,김형기,조규완,강병택,임금순,서정향,정동인 한국임상수의학회 2012 한국임상수의학회지 Vol.29 No.2

A 12-year-old castrated male Shih-tzu dog presented with vomiting, anorexia, and weight loss. The patient’s medical history and hematological, radiographic, ultrasonographic, and endoscopic findings were used for diagnosis. The patient’s medical history showed that he was being treated for chronic kidney disease since a few weeks. The serum biochemical analysis showed moderate azotemia. However, abdominal radiographic and ultrasonographic findings showed the presence of a mass in the pylorus area of the stomach. On gastrointestinal endoscopic examination, the proliferative mass was found in the pyloric antrum. The histopathological results of the endoscopic biopsy specimen indicated that it was strongly suspected a gastric adenoma; therefore, we surgically excised the pyloric outflow region via a Y-U pyloroplasty. The histopathological examination of the surgically excised specimen also indicated that the mass was a gastric adenoma. After surgical treatment, the patient’s condition improved gradually, and the clinical symptoms diminished in approximately 3 weeks after surgery. The patient’s condition was well controlled until recently,i.e., 18 months after surgery. This case report describes the clinical findings, imaging characteristics, endoscopic findings,and histopathological features of a gastric adenoma in the pyloric outflow tract of a dog.

신재생 에너지 중소기업의 맞춤형 경영성과 측정지표 개발

이희천,위도영,이종환 한국디지털정책학회 2012 디지털융복합연구 Vol.10 No.11

중증근무력증에 의한 개의 거대식도증 3례

이희천,전준혁,조규완,강병택,정동인 한국임상수의학회 2012 한국임상수의학회지 Vol.29 No.1

Three dogs (An 8 years-old intact female Poodle, a 7 years-old intact male Schunauzer, and an 8 yearsold Golden Retriever) were presented due to acute vomiting, dyspnea, and generalized weakness. Megaesophagus was confirmed through radiographic examination in all 3 dogs. Relative oesophageal diameter (ROD) was measured and results of ROD measurements showed the possibility of megaesophagus secondary to myasthenia gravis in three dogs. Thus we performed anticholinesterase test as screening test for myasthenia gravis. In all three dogs, esophageal diameter was reduced after neostigmine methylsulfate administration. For definite diagnosis of acquired myasthenia gravis, serum acetylcholine receptor antibody titer was measured, but definite diagnosis was confirmed only in one case. However,based on history, radiographic findings, anticholinesterase test, ROD measurement, other two cases were still suspected as megaesophagus secondary to myasthenia gravis. Treatment with pyridostigmine bromide was initiated in all dogs,and improvement of esophageal diameter was shown in all dogs. One dog was successfully managed for 15 months after initial treatment and, is still alive, but other two dogs were died shortly after initial treatment, because of severe aspiration pneumonia.