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Wu B, Kastl B, Cino-Ozuna AG, Springer NL, Thakkar R, Biller D, Whitehouse W, Easterwood L, Nguyen TA. Feline sarcomatoid renal cell carcinoma with peritoneal carcinomatosis and effusion. J Vet Diagn Invest 2021; 34:153-159. [PMID: 34713776 DOI: 10.1177/10406387211054826] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A 9-y-old, castrated male, domestic medium-hair cat diagnosed previously with chronic kidney disease developed anorexia and vomiting. Ultrasonography revealed abdominal effusion and a left renal perihilar mass. Cytologic evaluation of the peritoneal fluid and mass identified atypical epithelioid cells suspected to be of renal epithelial or possible mesothelial origin. Immunohistochemical (IHC) evaluation of a formalin-fixed, paraffin-embedded peritoneal fluid cell block indicated both pancytokeratin and vimentin expression in the atypical epithelioid cell population. With scanning electron microscopic evaluation, similar epithelioid cells lacked the cell-surface microvilli expected of mesothelium, supporting an antemortem diagnosis of probable carcinoma. On postmortem examination, the left kidney was effaced by an infiltrative neoplasm with myriad similar nodules throughout the peritoneum. The neoplasm was composed primarily of polygonal-to-spindle-shaped cells with strong vimentin and weak pancytokeratin cytoplasmic immunolabeling. Further IHC characterization with PAX8, CK18, KIT, napsin A, SMA, desmin, CD18, and claudin 5 was performed. Histologic and IHC findings supported a diagnosis of sarcomatoid renal cell carcinoma with peritoneal carcinomatosis. An in vitro cell culture line of neoplastic cells harvested from the primary tumor was successfully established for future research endeavors.
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Affiliation(s)
- BinXi Wu
- College of Veterinary Medicine, and Kansas State Veterinary Diagnostic Laboratory, Kansas State University, Manhattan, KS, USA
| | - Brandy Kastl
- College of Veterinary Medicine, and Kansas State Veterinary Diagnostic Laboratory, Kansas State University, Manhattan, KS, USA
| | - Ada G Cino-Ozuna
- College of Veterinary Medicine, and Kansas State Veterinary Diagnostic Laboratory, Kansas State University, Manhattan, KS, USA
| | - Nora L Springer
- Departments of Diagnostic Medicine/Pathobiology, Kansas State University, Manhattan, KS, USA
| | - Ravindra Thakkar
- Anatomy & Physiology, Kansas State University, Manhattan, KS, USA
| | - David Biller
- Veterinary Clinical Sciences, Kansas State University, Manhattan, KS, USA
| | - William Whitehouse
- Veterinary Clinical Sciences, Kansas State University, Manhattan, KS, USA
| | - Loren Easterwood
- Veterinary Clinical Sciences, Kansas State University, Manhattan, KS, USA
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White JD, Bosward KL, Norris JM, Malik R, Lindsay SA, Canfield PJ. Renal Crest Proliferative Lesions in Cats with Chronic Kidney Disease. J Comp Pathol 2021; 187:52-62. [PMID: 34503654 DOI: 10.1016/j.jcpa.2021.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 05/25/2021] [Accepted: 07/08/2021] [Indexed: 11/18/2022]
Abstract
In a histopathological study of the renal crest (RC) of kidneys of cats with chronic kidney disease (CKD), 58/90 (64%) had epithelial proliferation. Of these, 33 cats had hyperplasia of the collecting duct (CD) epithelium (CDH) alone, eight had hyperplasia of the urothelium covering the RC (RCUH), of which one had concurrent abaxial renal pelvic urothelial hyperplasia (UH), and eight had both CDH and RCUH. CDH or RCUH were present in five cats with marked dysplasia of the CD epithelium (CDD) and four cats with invasive carcinomas, which also had epithelial dysplasia. All nine cats with marked dysplasia or neoplasia of the RC also had substantially altered RC contours due to focal haemorrhage, papillary necrosis or fibrosis. Three of the carcinomas had a strong desmoplastic response. In control cats, both urothelial (RC and renal pelvis) and tubular (CD and distal tubular) cells were immunopositive for cytokeratin (CK; AE1/AE3), tubular epithelial cells were positive for vimentin (Vim) and aquaporin 2 (Aq2), while urothelial cells were positive for p63. PAX8 immunolabelling was difficult to validate. CD and UH labelling was similar to control tissue. While urothelial dysplasia had the same immunolabelling pattern as UH and control tissue, CDD was generally immunonegative for Aq2. As immunolabelling of the four carcinomas did not distinguish between tubular and urothelial origin, with three positive for both Vim and p63, all were broadly designated as RC carcinomas. Overall, proliferative epithelial lesions are common in cats with CKD and form a continuum from simple hyperplasia to neoplasia of the urothelium or CD of the RC.
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Affiliation(s)
- Joanna D White
- Sydney School of Veterinary Science, University of Sydney, Sydney, New South Wales, Australia.
| | - Katrina L Bosward
- Sydney School of Veterinary Science, University of Sydney, Sydney, New South Wales, Australia
| | - Jacqueline M Norris
- Sydney School of Veterinary Science, University of Sydney, Sydney, New South Wales, Australia
| | - Richard Malik
- Centre for Veterinary Education, Veterinary Science Conference Centre B22, University of Sydney, Sydney, New South Wales, Australia
| | - Scott A Lindsay
- School of Animal and Veterinary Sciences, Faculty of Science, University of Adelaide, Adelaide, South Australia, Australia
| | - Paul J Canfield
- Sydney School of Veterinary Science, University of Sydney, Sydney, New South Wales, Australia
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Lee S, Choi HJ, Lee HB, Jo SM, Mun JH, Son WC. Renal oncocytoma in a cat with chronic renal failure. JFMS Open Rep 2017; 3:2055116917693491. [PMID: 28491452 PMCID: PMC5362917 DOI: 10.1177/2055116917693491] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
CASE SUMMARY A 9-year-old male neutered domestic shorthair cat presented with anorexia. Ultrasonography showed an irregularly shaped hypoechoic mass in the cranial pole of the right kidney. Ultrasound-guided fine-needle aspiration of the renal mass was performed. Cytology revealed moderate cellularity smears composed of epithelial cell clusters, which consisted of an exclusive population of oncocytic cells seen in sheets and papillary clusters along with abundant single cells. A moderate-to-abundant amount of densely stained granular cytoplasm with round nuclei and indistinct nucleoli was seen. The cytological diagnosis was renal oncocytic neoplasm. CT and surgical resection revealed a firm tan mass in the right kidney. A final diagnosis of renal oncocytoma was made on the basis of histology, immunohistochemical staining profile (positive for cytokeratin, and negative for chromogranin A, neuron-specific enolase and vimentin) of neoplastic cells, together with the electronic microscopy results. RELEVANCE AND NOVEL INFORMATION We believe that this is the first report of the cytological features of feline renal oncocytoma.
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Affiliation(s)
- Sora Lee
- Asan Institute for Life Sciences and Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.,Department of Clinical Pathology, Irion Animal Hospital, Seoul, Korea
| | - Hyun-Ji Choi
- Asan Institute for Life Sciences and Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Han-Byul Lee
- Asan Institute for Life Sciences and Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Sung-Min Jo
- Asan Institute for Life Sciences and Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Ji-Hye Mun
- Asan Institute for Life Sciences and Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Woo-Chan Son
- Asan Institute for Life Sciences and Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
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