| Abstract: | We report the first case of uric acid nephrolithiasis in a free-ranging river otter (Lontra canadensis). A 7 yr old male river otter collected from the Skagit River of western Washington (USA) had bilateral nephrolithiasis and severely enlarged ureters (one of 305 examined [0.33%]). The uroliths were 97% uric acid and 3% protein. Microscopic changes in the kidney were confined to expansion of renal calyces, minor loss of medullary tissue, and multifocal atrophy of the cortical tubules. No inflammation was observed in either kidney or the ureters. The ureters were enlarged due to marked hypertrophy of smooth muscle plus dilation of the lumen. Fusion of the major calyces into a single ureteral lumen was several cm distal to that of two adult male otters used as histopathologic control specimens. This case report is part of a large contaminant study of river otters collected from Oregon and Washington. It is important to understand diseases and lesions of the otter as part of our overall evaluation of this population. |
| Genre: | Article |
| ProdID: | 1016267 |
| Citation Author: | Grove, Robert A.; Bildfell, Rob; Henny, Charles J.; Buhler, D. R. |
| Citation Contributing Office: | Forest and Rangeland Ecosystem Science Center |
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| Citation End Page: | 917 |
| Citation Issue: | 4 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of Wildlife Diseases |
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| Citation Number Of Pages: | 4 |
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| Citation Phsyical Description: | p. 914-917 |
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| Citation Search Results Text: | Bilateral uric acid nephrolithiasis and ureteral hypertrophy in a free-ranging river otter (Lontra canadensis); 2003; Article; Journal; Journal of Wildlife Diseases; Grove, Robert A.; Bildfell, Rob; Henny, Charles J.; Buhler, D. R. |
| Citation Start Page: | 914 |
| Citation Volume: | 39 |
| Citation Year: | 2003 |
| Type: | citation/reference |
| Text: | Bilateral uric acid nephrolithiasis and ureteral hypertrophy in a free-ranging river otter (Lontra canadensis); 2003; Article; Journal; Journal of Wildlife Diseases; Grove, Robert A.; Bildfell, Rob; Henny, Charles J.; Buhler, D. R. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Wed, 1 Jan 2003 00:00 -0600 |
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