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For each included dog, the following CT parameters were recorded: gastric tumor location, tumor shape, gastric involvement pattern, tumor enhancement pattern in early and late phases, presence and location of lymphadenopathy, gastric tumor attenuation values, attenuation values of enlarged lymph nodes, maximum short\u2010axis diameter (mm) of enlarged lymph node, maximum long\u2010axis diameter (mm) of enlarged lymph node, and short\u2010axis diameter to long\u2010axis diameter ratio (short axis\/long axis). A total of 16 dogs met inclusion criteria and had the following final diagnoses: five lymphoma, six adenocarcinoma, three inflammatory polyps, and two leiomyoma. In the early\u2010 and delayed\u2010phase postcontrast images, the mean CT attenuation value for lymphoma was lower than that of other gastric tumors. Lymphadenopathy was widespread in lymphomas and regional in adenocarcinomas. Lymphadenopathy was not detected in leiomyomas. Lymph node measurements in lymphoma were larger than lymph node measurements in adenocarcinoma. Although there were overlapping findings for the different types of gastric tumors, contrast\u2010enhanced CT provided helpful information for characterizing gastric tumors based on the following criteria: early and late enhancement patterns, the site of origin of the mass lesion, and extent of local invasion and distant metastases. Lymphoma should be considered for canine gastric tumors with low mean attenuation values during early\u2010 and delayed\u2010phase postcontrast images, and widespread, bulky, and rounded lymphadenopathy.<\/jats:p>","DOI":"10.1111\/vru.12677","type":"journal-article","created":{"date-parts":[[2018,8,20]],"date-time":"2018-08-20T00:00:16Z","timestamp":1534723216000},"page":"7-18","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":28,"title":["Contrast\u2010enhanced computed tomography may be helpful for characterizing and staging canine gastric tumors"],"prefix":"10.1111","volume":"60","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7911-913X","authenticated-orcid":false,"given":"Toshiyuki","family":"Tanaka","sequence":"first","affiliation":[{"name":"Laboratory of Veterinary Surgery, Department of Graduate School of Life and Environmental Sciences Osaka Prefecture University Izumisano\u2010shi Osaka 598\u20108531 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