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Ultrasonography and pyelography revealed a right-sided dilation of the renal pelvis and ureter due to complete obstruction in the middle third of the ureter. A mass obstructing the lumen of the right ureter was completely resected, and ureteral suturing was performed, preserving the integrity of the involved structures. Histopathology confirmed primary ureteral hemangiosarcoma. Due to the local and non-invasive nature of the mass, chemotherapy was not initiated. The patient\u2019s survival was approximately two years, and normal renal function was preserved throughout this period.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusions<\/jats:title>\n                <jats:p>Considering this type of tumor in the differential diagnosis of upper urinary tract obstructive disorders. Furthermore, the preservation of the ureter and kidney is a suitable therapeutic option after surgical resection of non-invasive tumors.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s12917-024-04114-8","type":"journal-article","created":{"date-parts":[[2024,6,22]],"date-time":"2024-06-22T09:01:55Z","timestamp":1719046915000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Right-sided ureteral hemangiosarcoma in a paraplegic dog"],"prefix":"10.1186","volume":"20","author":[{"given":"Suellen Rodrigues","family":"Maia","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mayara","family":"Manochio","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lara Vilela","family":"Soares","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yury Carantino Costa","family":"Andrade","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alef Winter Oliveira","family":"Alvarenga","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Leandro Zuccolotto","family":"Crivellenti","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2024,6,22]]},"reference":[{"issue":"5","key":"4114_CR1","doi-asserted-by":"publisher","first-page":"855","DOI":"10.1016\/j.cvsm.2019.04.009","volume":"49","author":"C Mullin","year":"2019","unstructured":"Mullin C, Clifford CA. 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