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WOO, Gye-Hyeong,JEAN, Young-Hwa,BAK, Eun-Jung,KANG, Seungwon,ROH, In-Soon,LEE, Kyung-Hyun,HWANG, Eui-Kyung,LEE, O-Soo Japanese Society of Veterinary Science 2010 The Journal of veterinary medical science Vol.72 No.9
<P>A dead whooper swan was found in an area of cropland near a stream and was submitted to the National Veterinary Research and Quarantine Service (NVRQS) in Korea. The affected animal was in relatively good condition. Grossly, the heart was enlarged and had pale and dark red stripes. A white, elongate parasite was seen on the cut surface of the heart. Histopathologically, severe lymphohistiocytic inflammation, myocardial necrosis, many adult heart worms and microfilariae were observed in the myocardium. Hemorrhage, lymphocytic inflammation, mineralization, and myocardial degeneration were also seen around the adult worms. No bacteria or viruses were isolated from the affected bird. The pathological findings indicate that the whooper swan was infected with nematodes, presumably <I>Sarconema eurycerca</I>, resulting in non-suppurative myocarditis.</P>
Canine Distemper Virus Infection in Fennec Fox (<i>Vulpes zerda</i>)
WOO, Gye-Hyeong,JHO, Yeon-Sook,BAK, Eun-Jung Japanese Society of Veterinary Science 2010 The Journal of veterinary medical science Vol.72 No.8
<P>Fifteen 8-month-old fennec foxes imported from Sudan showed fever, mucopurulent ocular discharge, diarrhea, severe emaciation, seizures, and generalized ataxia, and died. Three of the 15 animals were presented for diagnostic investigation. Severe dehydration, brain congestion, and gastric ulcers were observed in all animals. In one animal, the lungs had failed to collapse and were multifocally dark red in appearance. Histopathologically, there were lymphohistiocytic meningoencephalitis with malacia, mild interstitial pneumonia, lymphoid depletion of lymphoid tissues and organs, and intestinal villous atrophy with intralesional coccidia. There were many intracytoplasmic and/or intranuclear inclusion bodies in the epithelial cells of the medullary velum, lungs, liver, kidneys, trachea, pancreas, stomach, gall bladder, urinary bladder, and ureters, and in macrophages of malacia foci and lymphocytes and macrophages of lymphoid organs. Additionally, intestinal coccidia were confirmed to be <I>Isospora</I> species by a fecal test. To our knowledge, this is the first report of canine distemper with intestinal coccidiosis in fennec fox.</P>
( Gye Hyeong Woo ),( Ha Young Kim ),( Jung Won Park ),( Eun Jung Bak ),( Jin Young Kim ),( Cheong Up Choi ) 한국동물위생학회 2007 한국동물위생학회지 (KOJVS) Vol.30 No.4
A 16-year-old female mixed dog was submitted for examination at the pathology division of national veterinary research and quarantine service(NVRQS). Grossly, white or grayish spherical, multinodular, firm to friable masses were present in the tibiofibula to the pharenge area of the right limb, and dysphagia, breathing difficulties and tachypnea were shown. Various-sized white or grayish black masses were scattered in lungs and diaphragm and one mass was observed in the trachea and in the jejunum, respectively. Histopathologically, the neoplastic cells were composed of polygonal or spindle shaped cells with various sized round to oval nuclei and abundant cytoplasm. These cells formed lobules or nests separated by fine connective tissue and contained little amount of melanin pigments. Melanin pigments were stained dark gray or black with Fontana-Masson method. Melanosomes were also ultrastructurally demonstrable by electron microscopy. Based on above results, the present case was diagnosed as canine malignant melanoma originating from the lower limb and digit.
A case of metastatic colonic adenocarcinoma in German shepherd
( Gye Hyeong Woo ),( Jae Hoon Kim ),( In Soon Roh ) 한국수의병리학회 2000 한국수의병리학회 학술발표논문집 Vol.2000 No.-
Intestinal acleilocaciilomas are uncoinmon in dogs, ancl they occur most frecluently in the colon ancl rectum of animals averaging 8-9 years old. Also, they have been reported rarely in cattle, goats, horses ancl swine.This tumors occur slightly higher in males than in females. Boxers, collies, poodles, ancl Gennan shepherds are prediposed. A case of nletastatic colonic adenocarcinoma in a 7-year-old, male, German shepherd. This clog shows progressive weight loss, persistent vomiting and diarrhea, anorexia, and emaciation. Other clinical sign was tenesmus. Glossly, the serosa of colon and mesentery contained gray-white, firm tissue mass which measured approximately 10 X 4 X 3 cm. Spleen has protruded pale red rouilcl to oval mass which is 2 to 50 nlm in cliam~eter. The milky yellow nodules ranging from 2 to 5 mm, were scattered in liver. Pancreas was stickly attached with stomach and peritoneum ancl has firm nodular nmass which is 15 X 5 X 5 cm. Microscopically, the tumor of colon was characterized by solid sheets or nests of well-differentiated to highly anaplastic polyheclral, cuboidal columnar epithelial cells, which form irregular acinar stnlctures. The neoplastic cells infiltrated into the sul~mucosa, the n~uscularis ancl the serosa along lymphatics and vessels. Metastases occurred in stomach, lymph nodes spleen and liver. Basecl on the gross findings ancl histopathologic examination. this tumor was diagnosed as colonic aclenoc,arcinoma.