Malignant mixed tumor in the salivary gland of a cat |
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Authors: | Heejaung Kim Munekazu Nakaichi Kazuhito Itamoto Yasuho Taura |
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Institution: | 1Department of Neurology, College of Medicine, Hanyang University, Seoul 133-792, Korea.;2Department of Veterinary Surgery, Faculty of Agriculture, Yamaguchi University, Yamaguchi 753-8515, Japan.;3Department of Veterinary Radiology, Faculty of Agriculture, Yamaguchi University, Yamaguchi 753-8515, Japan. |
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Abstract: | The presence of a malignant mixed tumor, also known as a carcinosarcoma, in the salivary gland is very rare. Such tumors, which are typically aggressive, are characterized by the presence of carcinomatous and sarcomatous components. A 9-year-old neutered female domestic short-haired cat presented with swelling in the right mandibular lesion that had rapidly enlarged over the previous 3 weeks. Physical examination revealed a large, fluctuated and painless subcutaneous swelling that was associated with a firm mass. Radiographs of the head revealed a soft-tissue density that involved faint circular calcific opacity. Contrast-enhanced computed tomography revealed that the peripheral capsulated cystic area had a contrast enhanced region without bone lysis. The cat received a total excision of the mass and postoperative radiotherapy. Histopathological analysis of the mass revealed that it was a malignant mixed tumor. Metastasis to the lung was discovered 7 weeks later, at which time treatment was stopped. |
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Keywords: | carcinosarcoma cat computed tomography malignant mixed tumor salivary gland |
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