Japanese Journal of Veterinary Anesthesia & Surgery
Online ISSN : 2189-6631
Print ISSN : 2189-6623
ISSN-L : 2189-6623
Volume 52, Issue 1
Displaying 1-3 of 3 articles from this issue
Review
  • Satomi IWAI
    2021 Volume 52 Issue 1 Pages 1-13
    Published: 2021
    Released on J-STAGE: July 06, 2021
    JOURNAL FREE ACCESS

    Currently, there has been an increased risk of ureterolithiasis in cats; most of these stones are calcium oxalate ones, and responsible for ureteral obstruction. Feline ureteral obstruction may occur due to either the stone itself or may be secondary to ureteral fibrosis or granuloma formation. Due to the absence of stones in some cases, a workup for suspected ureteral obstruction is recommended if ultrasonography shows dilatation of the renal pelvis or ureter. While obstruction of a single ureter is less likely to cause serious injury, stricture of both ureters requires urgent treatment. In cases of calcium oxalate stones, surgery is often indicated. Once acute renal injury sets in, even with the resolution of ureteral obstruction, fibrosis of renal tubular interstitium is likely to advance, further progressing to chronic renal disease. This article focuses on the causes, pathological changes, clinical manifestations, diagnostic modalities, treatment modalities, and prognostic management of feline ureterolithiasis.

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Brief Note
  • Toshiyuki SUZUKI, Ayako OKUDA, Kyoko NAKAGAWA, Yasuhiro NAKANO, Haruka ...
    2021 Volume 52 Issue 1 Pages 14-20
    Published: 2021
    Released on J-STAGE: July 06, 2021
    JOURNAL FREE ACCESS

    An 18 month-old cat presented with sneezing, nasal congestion, nasal discharge and clinical signs of Horner’s syndrome. There was no improvement following medical treatment. A nasopharyngeal polyp was seen originating from the right tympanic bulla on a CT image. Resection of the polyp via soft-palate incision resolved the respiratory clinical signs, but the neurological signs remained. Based on MRI findings, inflammatory tissue was removed from the right tympanic bulla via ventral osteotomy one month after the first surgery. No further clinical signs were noted and many neurological signs were improved following surgery. The tissues resected from these surgeries were histologically diagnosed as an inflammatory polyp. The present case suggests that inflammatory polyps involving the bulla and nasopharynx may cause Horner’s syndrome and upper respiratory disturbance in cats, possibly requiring surgery at both sites. A sample for a PCR test, obtained from the nasopharyngeal area sixteen months following surgery, was positive for Mycoplasma felis, but it was not concluded that Feline mycoplasma infection caused the inflammatory nasopharyngeal polyp in the cat.

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  • Yusuke SAKAGUCHI, Hidetaka NISHIDA, Toshiyuki TANAKA, Miyuu TANAKA, Ma ...
    2021 Volume 52 Issue 1 Pages 21-24
    Published: 2021
    Released on J-STAGE: July 06, 2021
    JOURNAL FREE ACCESS

    A 12-year-old castrated Weimaraner was referred to our hospital with an acute onset of tetraparesis. Intervertebral disk extrusion at the level of C5-6 was diagnosed based on diagnostic imaging, and a left-sided hemilaminectomy at the lesion was performed. During the operation, the extruded disk material was turned out to be covered with the membranous tissue, and stripping of the membranous tissue resulted in severe bleeding. Observation of the surgical field after removal of the intervertebral material revealed that the membranous tissue was the internal vertebral venous plexus. In this case, it was difficult to confirm the internal vertebral venous plexus because the venous plexus was compressed by the laterally prolapsed disk material and there was no blood flow.

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