Incidental Synovial Myxoma with Extensive Intermuscular Infiltration in a Dog
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概要
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A 16-year-old male mixed-breed dog was euthanized due to progression of renal failure caused by renal adenocarcinoma in the left kidney. Apart from main symptomatic lesion, accumulation of transparent jelly-like fluid was observed between the right femoral muscles. Gross examination of the right hindlimb revealed multiple nodules in the articular surface and capsule of the stifle joints, which extended into the crural muscles. Histopathologically, the joint and intermuscular masses were characterized by variously-sized hypocellular nodules consisting of spindle to stellate cells suspended in an abundant myxoid matrix. There were cystic structures within the intermuscular masses, lined by synoviocyte-like cells. Based on the gross and histopathologic findings, the case was diagnosed as synovial myxoma with extensive intermuscular infiltration. Synovial myxoma should be considered in the differential diagnosis of dogs with myxomatous tumor between skeletal muscles, even in absence of joint or muscle symptoms.
著者
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Aoki Mika
Laboratory For Molecular Psychiatry Riken Brain Science Institute Saitama Japan And Section Of Psych
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Izawa Takeshi
Laboratory Of Plant Molecular Genetics Nara Institute Of Science And Technology
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Kuwamura Mitsuru
Laboratory Of Veterinary Pathology Osaka Prefecture University
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Yamate Jyoji
Laboratory Of Veterinary Pathology Division Of Veterinary Sciences Graduate School Of Life And Environmental Sciences Osaka Prefecture University
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Ohashi Fumihito
Laboratory Of Veterinary Surgery Osaka Prefecture University
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TANAKA Miyuu
Laboratory of Veterinary Pathology, Division of Veterinary Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University
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YAMATE Jyoji
Laboratory of Veterinary Pathology, Osaka Prefecture University, Rinku-Orai Kita, Izumisano, Osaka 598–8531, Japan
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KUWAMURA Mitsuru
Laboratory of Veterinary Pathology, Osaka Prefecture University, Rinku-Orai Kita, Izumisano, Osaka 598–8531, Japan
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