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Malignant epithelial tumors associated with Felis catus papilloma virus type 3 and type 4 infections at distinct anatomical sites in a domestic cat. 猫乳头瘤病毒3型和4型感染与家猫不同解剖部位的恶性上皮肿瘤相关
IF 1.1 4区 农林科学
Journal of Veterinary Medical Science Pub Date : 2026-05-01 Epub Date: 2026-03-24 DOI: 10.1292/jvms.25-0517
Hinata Abe, Nanami X Kato, Mika Tanabe, Taichi Shimabukuro, Saki Hashimoto, Takuya Hirai, Naoyuki Fuke, Akatsuki Saito
{"title":"Malignant epithelial tumors associated with Felis catus papilloma virus type 3 and type 4 infections at distinct anatomical sites in a domestic cat.","authors":"Hinata Abe, Nanami X Kato, Mika Tanabe, Taichi Shimabukuro, Saki Hashimoto, Takuya Hirai, Naoyuki Fuke, Akatsuki Saito","doi":"10.1292/jvms.25-0517","DOIUrl":"10.1292/jvms.25-0517","url":null,"abstract":"<p><p>A 12-year-8-month-old neutered male cat presented with multiple nail bed masses and an ulcerative lip lesion. PCR identified Felis catus papillomavirus type 3 (FcaPV3) in the nail masses and type 4 (FcaPV4) in the lip lesion. Histopathology revealed basosquamous cell carcinoma (BSCC) in the digits and Bowenoid in situ carcinoma (BISC) in the lip. Immunohistochemistry showed that tumor cells in both BSCC and BISC were positive for p16 and p63 and weakly positive for pRb; p53 was negative in BSCC but weakly positive in BISC. In situ hybridization confirmed FcaPV3 and FcaPV4 E6 genes in digital and lip tumors, respectively. Over 6 months, viral sequencing showed 23 nucleotide changes in FcaPV3, suggesting viral evolution. This is the first report of distinct malignant epithelial tumors independently induced by FcaPV3 and FcaPV4 in a cat.</p>","PeriodicalId":49959,"journal":{"name":"Journal of Veterinary Medical Science","volume":" ","pages":"710-718"},"PeriodicalIF":1.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147516071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparison of serum paraoxonase 1, butyrylcholinesterase, and carboxylesterase activities among dogs, cats, micro-mini pigs, and goats. 狗、猫、迷你猪和山羊血清对氧磷酶1、丁基胆碱酯酶和羧酸酯酶活性的比较
IF 1.1 4区 农林科学
Journal of Veterinary Medical Science Pub Date : 2026-05-01 DOI: 10.1292/jvms.26-0156
Seiko Doi, Yutaka Kobayashi, Satoshi Takashima, Wataru Ide, Yusuke Murahata, Masato Yayota, Masaki Takasu, Yukiko Sassa-O'Brien, Sanae Shibata
{"title":"Comparison of serum paraoxonase 1, butyrylcholinesterase, and carboxylesterase activities among dogs, cats, micro-mini pigs, and goats.","authors":"Seiko Doi, Yutaka Kobayashi, Satoshi Takashima, Wataru Ide, Yusuke Murahata, Masato Yayota, Masaki Takasu, Yukiko Sassa-O'Brien, Sanae Shibata","doi":"10.1292/jvms.26-0156","DOIUrl":"https://doi.org/10.1292/jvms.26-0156","url":null,"abstract":"<p><p>Serum nonspecific esterases, including paraoxonase 1 (PON1), butyrylcholinesterase (BChE), and carboxylesterase (CES), may influence the hydrolysis of some ester-containing drugs. However, data on these enzymes across animal species remain limited. This study compared serum PON1, BChE, and CES activities among dogs (n=6), cats (n=6), micro-mini pigs (n=6), and goats (n=8) using identical assay systems. Serum samples were analyzed using established colorimetric or fluorescent assays, and interspecies differences were evaluated using the Steel-Dwass test. PON1 activity was highest in goats, BChE activity was highest in dogs, and CES activity was highest in cats. These findings demonstrate distinct interspecies profiles of serum nonspecific esterase activities and provide baseline data for future studies investigating species differences in the metabolism of ester-containing compounds.</p>","PeriodicalId":49959,"journal":{"name":"Journal of Veterinary Medical Science","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147845415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Temporary joint immobilization using external skeletal fixation for recurrent medial shoulder luxation in a captive Japanese raccoon dog (Nyctereutes procyonoides viverrinus). 在一只圈养的日本貉（Nyctereutes procyonoides viverrinus）中使用外骨骼固定暂时固定复发性内侧肩脱位。
IF 1.1 4区 农林科学
Journal of Veterinary Medical Science Pub Date : 2026-05-01 Epub Date: 2026-03-20 DOI: 10.1292/jvms.25-0511
Minato Ueda, Muneki Honnami, Masatoshi Kamata, Manabu Mochizuki, Yasutsugu Miwa
{"title":"Temporary joint immobilization using external skeletal fixation for recurrent medial shoulder luxation in a captive Japanese raccoon dog (Nyctereutes procyonoides viverrinus).","authors":"Minato Ueda, Muneki Honnami, Masatoshi Kamata, Manabu Mochizuki, Yasutsugu Miwa","doi":"10.1292/jvms.25-0511","DOIUrl":"10.1292/jvms.25-0511","url":null,"abstract":"<p><p>A captive male Japanese raccoon dog (Nyctereutes procyonoides viverrinus) presented with medial shoulder luxation. The animal had previously undergone left hindlimb amputation following a traffic accident and exhibited severe dysfunction of the right hindlimb due to chronic medial patellar luxation (MPL), resulting in forelimb-dependent ambulation. Closed reduction was unsuccessful, so external skeletal fixation was applied to achieve stabilization through periarticular fibrosis. The animal resumed weight-bearing shortly after surgery, and the fixator was safely removed under light sedation six weeks later. This case highlights the effectiveness of external skeletal fixation as a minimally invasive treatment for shoulder luxation in raccoon dogs.</p>","PeriodicalId":49959,"journal":{"name":"Journal of Veterinary Medical Science","volume":" ","pages":"741-745"},"PeriodicalIF":1.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147500281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Arterial supplies to the spleen in the rat (Rattus norvegicus), degu (Octodon degus), and red-bellied squirrel (Callosciurus erythraeus). 大鼠（褐家鼠）、德古鼠（德古章鱼）和红腹鼠（红腹鼠）脾脏的动脉供应。
IF 1.1 4区 农林科学
Journal of Veterinary Medical Science Pub Date : 2026-05-01 Epub Date: 2026-03-24 DOI: 10.1292/jvms.26-0066
Tetsuhito Kigata, Yuine Watanabe, Mio Matsuura, Keiko Sakai
{"title":"Arterial supplies to the spleen in the rat (Rattus norvegicus), degu (Octodon degus), and red-bellied squirrel (Callosciurus erythraeus).","authors":"Tetsuhito Kigata, Yuine Watanabe, Mio Matsuura, Keiko Sakai","doi":"10.1292/jvms.26-0066","DOIUrl":"10.1292/jvms.26-0066","url":null,"abstract":"<p><p>Rodents exhibit diverse morphological and ecological adaptations across species, making them important species for considering the evolutionary background of morphological traits. Although the splenic artery has been described in various rodent species, interspecific comparisons remain difficult due to a lack of uniformity in anatomical descriptions. We therefore traced the ramification patterns of the splenic artery in 15 rats (Rattus norvegicus), 15 degus (Octodon degus), and 10 red-bellied squirrels (Callosciurus erythraeus) using standardized anatomical criteria to enable rigorous interspecific comparisons. In all degus and red-bellied squirrels, the splenic artery was the first independent branch of the celiac artery, while in 73% of rats, the splenic artery emerged as one of the trifurcated branches of the celiac artery. The splenic artery of red-bellied squirrels exhibited the highest average number of divisions before entering the splenic parenchyma compared to the other two species, resulting in the highest average number of splenic branches. Further, the average number of gastric branches, including the short gastric and gastroepiploic arteries, was highest in red-bellied squirrels and lowest in rats. The differences in branching patterns of the splenic artery among three rodent species, as revealed in this study, are expected to provide clues to understanding species differences in ramification patterns of the splenic artery in rodents.</p>","PeriodicalId":49959,"journal":{"name":"Journal of Veterinary Medical Science","volume":" ","pages":"670-676"},"PeriodicalIF":1.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147516114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Identification of a genetic locus responsible for the dominant white-spotting coat phenotype in mice spontaneously isolated from a Japanese wild-derived inbred strain. 日本野生自交系小鼠白斑皮毛显性表型遗传位点的鉴定。
IF 1.1 4区 农林科学
Journal of Veterinary Medical Science Pub Date : 2026-05-01 Epub Date: 2026-03-24 DOI: 10.1292/jvms.25-0443
Hiromitsu Ochiai, Gou Takahashi, Yuki Ishida, Yoshibumi Matsushima, Kenta Wada
{"title":"Identification of a genetic locus responsible for the dominant white-spotting coat phenotype in mice spontaneously isolated from a Japanese wild-derived inbred strain.","authors":"Hiromitsu Ochiai, Gou Takahashi, Yuki Ishida, Yoshibumi Matsushima, Kenta Wada","doi":"10.1292/jvms.25-0443","DOIUrl":"10.1292/jvms.25-0443","url":null,"abstract":"<p><p>Agouti-dominant spotting (Ads) is a novel mutant mouse that was spontaneously isolated from KOR1/Stm (KOR1), an inbred strain derived from a Japanese wild mouse. Heterozygous Ads mice exhibit dominant white-spotting on the dorsal coat, whereas homozygous mice display embryonic lethality. We generated [Ads×C57BL/6J (B6)]F<sub>1</sub> (F<sub>1</sub>), F<sub>2</sub> and [B6×(Ads×B6)]N<sub>2</sub> (N<sub>2</sub>) mice to investigate the inheritance patterns of the Ads phenotype. The segregation ratio did not conform to the theoretical values expected for a simple autosomal dominant inheritance pattern with recessive embryonic lethality, as there was a reduced number of individuals exhibiting white-spotting in F<sub>2</sub> (χ<sup>2</sup>=29.07, P<0.0001) and N<sub>2</sub> (χ<sup>2</sup>=5.79, P=0.016). Genome-wide linkage analysis revealed that the Ads locus was located within the interval between D4Mit288 (56.8-Mb) and D4Mit69 (136.1-Mb) on chromosome 4. Further fine mapping using additional N<sub>2</sub> and N<sub>3</sub> progeny and markers narrowed the Ads locus to the genomic interval between Dhcr24 (106.4-Mb) and D4Mit199 (111.7-Mb). Among the genes encoded within this genomic interval, we predicted that the mago homolog, exon junction complex core component (Magoh), was the most promising candidate gene for Ads, as its null mutations have been reported to cause a white-spotting phenotype in Mos2 mice. However, no mutations were identified in the coding region of Magoh in Ads mice, suggesting that the causative mutation for the white-spotting phenotype may reside in a cis-regulatory region of Magoh or in another novel gene within the interval.</p>","PeriodicalId":49959,"journal":{"name":"Journal of Veterinary Medical Science","volume":" ","pages":"704-709"},"PeriodicalIF":1.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147516076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Successful treatment of small intestinal calculus in a cockatiel (Nymphicus hollandicus) with oral cola administration. 口服可乐治疗荷兰凤尾鹦鹉小肠结石疗效观察。
IF 1.1 4区 农林科学
Journal of Veterinary Medical Science Pub Date : 2026-04-30 DOI: 10.1292/jvms.25-0437
Akiko Ueda, Kengo Ueda, Kiyokazu Ozaki
{"title":"Successful treatment of small intestinal calculus in a cockatiel (Nymphicus hollandicus) with oral cola administration.","authors":"Akiko Ueda, Kengo Ueda, Kiyokazu Ozaki","doi":"10.1292/jvms.25-0437","DOIUrl":"https://doi.org/10.1292/jvms.25-0437","url":null,"abstract":"<p><p>Radiopaque intestinal calculi are occasionally observed in pet cockatiels. When large calculi are suspected of causing intestinal obstruction, medical therapy is unlikely to improve the condition, making surgical removal the appropriate treatment. However, surgical intervention is problematic owing to its high invasiveness. Recently, numerous human studies have demonstrated the efficacy of oral cola therapy for various gastrointestinal calculi. Here, we report a case of ileus in a cockatiel due to a large small-intestinal calculus, in which oral cola therapy achieved remarkable success.</p>","PeriodicalId":49959,"journal":{"name":"Journal of Veterinary Medical Science","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147787518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Gastric carcinoid with metastasis to a regional lymph node in a dog: case report. 犬类胃癌伴局部淋巴结转移1例。
IF 1.1 4区 农林科学
Journal of Veterinary Medical Science Pub Date : 2026-04-29 DOI: 10.1292/jvms.26-0118
Su-Hyung Lee, Ji Young Ha, Na Young Lee, Jihoon Kim, Dae Young Kim, Dae-Yong Kim
{"title":"Gastric carcinoid with metastasis to a regional lymph node in a dog: case report.","authors":"Su-Hyung Lee, Ji Young Ha, Na Young Lee, Jihoon Kim, Dae Young Kim, Dae-Yong Kim","doi":"10.1292/jvms.26-0118","DOIUrl":"https://doi.org/10.1292/jvms.26-0118","url":null,"abstract":"<p><p>Gastric neuroendocrine neoplasms (NENs), historically termed gastric carcinoids, are rare in dogs and poorly characterized in veterinary medicine. A 13-year-old spayed female Maltese dog was evaluated for an incidentally detected abdominal mass. Computed tomography revealed a contrast-enhancing gastric body mass and an enlarged regional lymph node suspicious for metastasis. Surgical excision and histopathology confirmed a well-differentiated gastric NEN with regional lymph node metastasis. Immunohistochemical findings supported neuroendocrine differentiation and helped exclude major differential diagnoses. Despite relatively low mitotic activity and an intermediate proliferative index, metastatic spread was documented. This case highlights that histologically well-differentiated canine gastric NENs may exhibit malignant behavior and emphasizes the importance of thorough nodal assessment for accurate staging.</p>","PeriodicalId":49959,"journal":{"name":"Journal of Veterinary Medical Science","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147787503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Buddleja officinalis as a natural xanthine oxidase inhibitor in a murine hyperuricemia model. 水仙作为天然黄嘌呤氧化酶抑制剂在小鼠高尿酸血症模型中的作用。
IF 1.1 4区 农林科学
Journal of Veterinary Medical Science Pub Date : 2026-04-27 DOI: 10.1292/jvms.25-0552
Chih-Chiang Wang, Chia-En Lin, Ching-Ju Huang, Hung-Che Chen, Mei-Chen Tseng, Fu-An Chen
{"title":"Buddleja officinalis as a natural xanthine oxidase inhibitor in a murine hyperuricemia model.","authors":"Chih-Chiang Wang, Chia-En Lin, Ching-Ju Huang, Hung-Che Chen, Mei-Chen Tseng, Fu-An Chen","doi":"10.1292/jvms.25-0552","DOIUrl":"https://doi.org/10.1292/jvms.25-0552","url":null,"abstract":"<p><p>Buddleja officinalis Maxim. is rich in flavonoids and polyphenols, which exhibits pronounced antioxidant activity. Given that B. asiatica, a related species, has been noted to inhibit xanthine oxidase (XO) in vitro, the urate-lowering effects of B. officinalis have not been confirmed. Thus, this study aimed to screen the XO inhibition of extracts in vitro and to confirm the most active urate-lowering fraction of B. officinalis in vivo. Ethanol extracts were partitioned into n-hexane (HEX), ethyl acetate (EA), n-butanol (BuOH), and aqueous fractions. The EA fraction of B. officinalis extracts exhibited the highest XO inhibitory activity, with it significantly surpassing that of the other fractions (P<0.05). Consequently, the EA fraction was selected for further in vivo evaluation in a mouse model of hyperuricemia, which was induced through intraperitoneal injection of potassium oxonate (PO, 250 mg/kg/day for 7 days). Mice were divided into six groups, including not treated, PO, PO + allopurinol, and low (PO + EA-L), medium (PO + EA-M), and high (PO + EA-H) EA dose groups. EA fractions of B. officinalis extracts were orally administered 1 hr after PO injection. Compared with in the PO group, the serum uric acid levels were significantly reduced in the PO + EA-M, PO + EA-H, and PO + allopurinol groups (P<0.05). These findings support the potential of B. officinalis as a natural XO inhibitor and an adjunctive supplement for hyperuricemia.</p>","PeriodicalId":49959,"journal":{"name":"Journal of Veterinary Medical Science","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147787528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Lobular dissecting hepatitis-like chronic hepatitis with bacterial chronic cholangitis in a ferret (Mustela putorius furo). 雪貂小叶夹层性肝炎样慢性肝炎合并细菌性慢性胆管炎。
IF 1.1 4区 农林科学
Journal of Veterinary Medical Science Pub Date : 2026-04-24 DOI: 10.1292/jvms.26-0075
Kio Yoshida, Kenichi Watanabe, Ginga Ohashi, Manabu Yamada, Yoshiyasu Kobayashi
{"title":"Lobular dissecting hepatitis-like chronic hepatitis with bacterial chronic cholangitis in a ferret (Mustela putorius furo).","authors":"Kio Yoshida, Kenichi Watanabe, Ginga Ohashi, Manabu Yamada, Yoshiyasu Kobayashi","doi":"10.1292/jvms.26-0075","DOIUrl":"https://doi.org/10.1292/jvms.26-0075","url":null,"abstract":"<p><p>A 1-year-3-month-old neutered female ferret presented with anorexia, weight loss, and increased liver enzymes and total bile acids. On day 49 of illness, neurologic signs appeared, necessitating humane euthanasia. Macroscopically, the liver was pale yellow with an irregular surface, and two tortuous shunt vessels from the cranial mesenteric vein to the caudal vena cava were observed cranial to the left kidney. Microscopically, single or a few hepatocytes were demarcated by reticular and collagen fibers with an extensive ductular reaction throughout all liver lobes. Bacterial chronic cholangitis was observed. Bilaterally symmetrical spongy degeneration was observed in the brain nuclei. Collectively, the present case showed lobular dissecting hepatitis-like chronic hepatitis with chronic cholangitis, accompanied by an acquired portosystemic shunt and hepatic encephalopathy.</p>","PeriodicalId":49959,"journal":{"name":"Journal of Veterinary Medical Science","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147787538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A case report of multiple cervical and mediastinal sialoceles in a dog: a rare differential for mediastinal masses with pleural effusion. 犬颈部及纵隔多发涎泡一例：罕见的胸膜积液伴纵隔肿块的鉴别诊断。
IF 1.1 4区 农林科学
Journal of Veterinary Medical Science Pub Date : 2026-04-23 DOI: 10.1292/jvms.25-0536
Jeong-Ho Ha, Sooyoung Choi, Jin-Ok Ahn, Jin-Young Chung
{"title":"A case report of multiple cervical and mediastinal sialoceles in a dog: a rare differential for mediastinal masses with pleural effusion.","authors":"Jeong-Ho Ha, Sooyoung Choi, Jin-Ok Ahn, Jin-Young Chung","doi":"10.1292/jvms.25-0536","DOIUrl":"https://doi.org/10.1292/jvms.25-0536","url":null,"abstract":"<p><p>Mediastinal masses with pleural effusion in dogs typically raise suspicion for thymoma or mediastinal lymphoma, necessitating careful differentiation. This paper describes a 12-year-old neutered male dog presenting with acute-onset coughing. Radiographic imaging revealed mild pleural effusion with an expanded cranial mediastinum. Subsequent ultrasonographic and computed tomographic examinations identified multiple masses extending from the cervical region to the cranial mediastinum. Cytologic analysis of the pleural fluid revealed findings suggestive of a salivary origin, with mild inflammatory cell infiltration. The pleural effusion was repeatedly drained and monitored radiographically. All lesions regressed gradually without surgical intervention. This rare case highlights the need to consider differential diagnoses beyond thymoma and lymphoma when mediastinal masses with pleural effusion are present.</p>","PeriodicalId":49959,"journal":{"name":"Journal of Veterinary Medical Science","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2026-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147787486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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