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Ide K, Katayama M, Mitsui I, Satoh H, Fukushima R, Yamamoto Y, Yamasaki M. Suspected renal interstitial cell tumor causing polycythemia in two dogs. J Vet Med Sci 2024; 86:368-373. [PMID: 38383003 DOI: 10.1292/jvms.23-0413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024] Open
Abstract
Here we report a case series of two dogs diagnosed as renal interstitial cell tumor (RICT) accompanied by elevated serum erythropoietin level and marked polycythemia. RICT is a rare tumor in dogs, originating from renal interstitial cells. While several renal tumors such as renal lymphoma, adenocarcinoma, carcinoma, sarcoma, fibrosarcoma and nephroblastoma may cause polycythemia, polycythemia caused by RICT has never been reported in dogs. The tumors in both dogs were solitary and lied within cortex or cortico-medullary junction. Histopathology revealed spindle-shaped cells suggesting mesenchymal origin, with no mitotic figures suggesting that the tumors in both dogs were benign. Following surgical removal of the affected kidney, serum erythropoietin level and polycythemia normalized in both dogs.
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Affiliation(s)
- Kaori Ide
- Laboratory of Veterinary Small Animal Internal Medicine, Cooperative Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Masaaki Katayama
- Division of Companion Animal Surgery, Veterinary Teaching Hospital, Faculty of Agriculture, Iwate University, Iwate, Japan
| | - Ikki Mitsui
- Laboratory of Veterinary Anatomy, Faculty of Veterinary Medicine, Okayama University of Science, Ehime, Japan
| | - Hiroshi Satoh
- Laboratory of Comparative Pharmacology and Toxicology, Cooperative Department of Veterinary Medicine, Faculty of Agriculture, Iwate University, Iwate, Japan
| | - Ryuji Fukushima
- Animal medical emergency center, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Yoshio Yamamoto
- Laboratory of Veterinary Anatomy and Cell Biology, Cooperative Department of Veterinary Medicine, Faculty of Agriculture, Iwate University, Iwate, Japan
| | - Masahiro Yamasaki
- Laboratory of Veterinary Small Animal Internal Medicine, Cooperative Department of Veterinary Medicine, Faculty of Agriculture, Iwate University, Iwate, Japan
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Xu XD, Zhou Y, Wang CQ, Huang X, Zhang K, Xu XW, He LW, Zhang XY, Fu XZ, Ma M, Qin QB, Liu SJ. Identification and effective regulation of scarb1 gene involved in pigmentation change in autotetraploid Carassius auratus. Zool Res 2024; 45:381-397. [PMID: 38485507 PMCID: PMC11017083 DOI: 10.24272/j.issn.2095-8137.2023.293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 12/25/2023] [Indexed: 03/19/2024] Open
Abstract
The autotetraploid Carassius auratus (4nRR, 4 n=200, RRRR) is derived from whole-genome duplication of Carassius auratus red var. (RCC, 2 n=100, RR). In the current study, we demonstrated that chromatophores and pigment changes directly caused the coloration and variation of 4nRR skin (red in RCC, brownish-yellow in 4nRR). To further explore the molecular mechanisms underlying coloration formation and variation in 4nRR, we performed transcriptome profiling and molecular functional verification in RCC and 4nRR. Results revealed that scarb1, associated with carotenoid metabolism, underwent significant down-regulation in 4nRR. Efficient editing of this candidate pigment gene provided clear evidence of its significant role in RCC coloration. Subsequently, we identified four divergent scarb1 homeologs in 4nRR: two original scarb1 homeologs from RCC and two duplicated ones. Notably, three of these homeologs possessed two highly conserved alleles, exhibiting biased and allele-specific expression in the skin. Remarkably, after precise editing of both the original and duplicated scarb1 homeologs and/or alleles, 4nRR individuals, whether singly or multiply mutated, displayed a transition from brownish-yellow skin to a cyan-gray phenotype. Concurrently, the proportional areas of the cyan-gray regions displayed a gene-dose correlation. These findings illustrate the subfunctionalization of duplicated scarb1, with all scarb1 genes synergistically and equally contributing to the pigmentation of 4nRR. This is the first report concerning the functional differentiation of duplicated homeologs in an autopolyploid fish, substantially enriching our understanding of coloration formation and change within this group of organisms.
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Affiliation(s)
- Xi-Dan Xu
- State Key Laboratory of Developmental Biology of Freshwater Fish, Engineering Research Center of Polyploid Fish Reproduction and Breeding of the State Education Ministry, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
- College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, Hunan 410081, China
| | - Yue Zhou
- State Key Laboratory of Developmental Biology of Freshwater Fish, Engineering Research Center of Polyploid Fish Reproduction and Breeding of the State Education Ministry, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Chong-Qing Wang
- State Key Laboratory of Developmental Biology of Freshwater Fish, Engineering Research Center of Polyploid Fish Reproduction and Breeding of the State Education Ministry, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Xu Huang
- State Key Laboratory of Developmental Biology of Freshwater Fish, Engineering Research Center of Polyploid Fish Reproduction and Breeding of the State Education Ministry, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Kun Zhang
- State Key Laboratory of Developmental Biology of Freshwater Fish, Engineering Research Center of Polyploid Fish Reproduction and Breeding of the State Education Ministry, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Xiao-Wei Xu
- State Key Laboratory of Developmental Biology of Freshwater Fish, Engineering Research Center of Polyploid Fish Reproduction and Breeding of the State Education Ministry, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Li-Wen He
- State Key Laboratory of Developmental Biology of Freshwater Fish, Engineering Research Center of Polyploid Fish Reproduction and Breeding of the State Education Ministry, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Xin-Yue Zhang
- State Key Laboratory of Developmental Biology of Freshwater Fish, Engineering Research Center of Polyploid Fish Reproduction and Breeding of the State Education Ministry, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Xin-Zhu Fu
- State Key Laboratory of Developmental Biology of Freshwater Fish, Engineering Research Center of Polyploid Fish Reproduction and Breeding of the State Education Ministry, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
| | - Ming Ma
- College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, Hunan 410081, China
| | - Qin-Bo Qin
- State Key Laboratory of Developmental Biology of Freshwater Fish, Engineering Research Center of Polyploid Fish Reproduction and Breeding of the State Education Ministry, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China
- Nansha-South China Agricultural University Fishery Research Institute, Guangzhou, Guangdong 511458, China
- Hunan Yuelu Mountain Science and Technology Co. Ltd. for Aquatic Breeding, Changsha, Hunan 410081, China. E-mail:
| | - Shao-Jun Liu
- State Key Laboratory of Developmental Biology of Freshwater Fish, Engineering Research Center of Polyploid Fish Reproduction and Breeding of the State Education Ministry, College of Life Sciences, Hunan Normal University, Changsha, Hunan 410081, China. E-mail:
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Kenny SA, Cook MR, Lenz JA, Maritato KC, Skorupski KA, Wustefeld-Janssens BG, Pellin MA, Silveira CJ, Veytsman S, Selmic LE, Husbands BD. Clinical outcomes in cats with renal carcinoma undergoing nephrectomy: A retrospective study. Vet Comp Oncol 2023; 21:587-594. [PMID: 37464904 DOI: 10.1111/vco.12921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 06/28/2023] [Accepted: 06/30/2023] [Indexed: 07/20/2023]
Abstract
Renal carcinomas (RC) are uncommonly encountered in feline medicine. Limited information regarding clinical presentation and postoperative outcomes is available. The purpose of this multi-institutional, retrospective study was to describe the presenting features and clinical outcomes of cats with RC undergoing nephrectomy. Thirty-six client-owned cats were included. Medical records from participating institutions were searched to identify cats that had a histopathologic diagnosis of RC and underwent nephrectomy from January 2001 to October 2021. The most common presenting complaints were weight loss (36.1%) and hyporexia (30.6%). Based on preoperative imaging and intraoperative findings, eight cats had suspected metastasis at the time of surgery (22.2%). Twenty-eight cats survived to discharge (77.8%). Median progression free interval (PFI) could not be determined, as only six cats developed suspected recurrence (16.7%) and seven cats developed suspected metastasis (19.4%). The all-cause median survival time (MST) was 203 days (95% confidence interval [CI]: 84, 1379 days). When cases that died prior to discharge were excluded, MST increased to 1217 days (95% CI: 127, 1641 days). One-year, two-year, and three-year survival rates were all 40.4%. Neither renal tumour histologic subtype nor the presence of preoperative azotemia, anaemia, erythrocytosis, haematuria, or suspected metastasis at diagnosis were found to influence survival. For cats surviving to discharge, prolonged survival times were possible. Further studies are necessary to elucidate other potential prognostic factors, the utility of postoperative adjuvant treatment, and to identify cats at-risk of mortality in the perioperative period.
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Affiliation(s)
- Shannon A Kenny
- Department of Veterinary Clinical Sciences, The Ohio State University, Columbus, Ohio, USA
| | - Matthew R Cook
- Department of Veterinary Clinical Sciences, The Ohio State University, Columbus, Ohio, USA
| | - Jennifer A Lenz
- School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | | | - Katherine A Skorupski
- Department of Surgical and Radiological Sciences, University of California at Davis, Davis, California, USA
| | - Brandan G Wustefeld-Janssens
- Department of Clinical Sciences, Colorado State University College of Veterinary Medicine and Biomedical Sciences, Fort Collins, Colorado, USA
| | - MacKenzie A Pellin
- Department of Clinical Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, Wisconsin, USA
| | - Catrina J Silveira
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA
| | - Stan Veytsman
- Department of Veterinary Clinical Sciences, University of Minnesota, St. Paul, Minnesota, USA
| | - Laura E Selmic
- Department of Veterinary Clinical Sciences, The Ohio State University, Columbus, Ohio, USA
| | - Brian D Husbands
- Department of Veterinary Clinical Sciences, The Ohio State University, Columbus, Ohio, USA
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Slinkard PT, Lana SE, Frank CB, Griffin LR. Multi-modality imaging and therapeutics used in a case of canine spinal nephroblastoma. Can Vet J 2022; 63:811-818. [PMID: 35919463 PMCID: PMC9281887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A 4-year-old castrated male golden retriever dog was brought to a veterinary teaching hospital for evaluation of acute progressive paraparesis. Neurological examination indicated a spinal cord lesion between the third thoracic vertebra and third lumbar vertebrae. Magnetic resonance imaging (MRI) revealed an intradural, extra medullary, and/or intramedullary mass centered over the eleventh and twelfth thoracic disc space. The dog underwent cytoreductive surgery and histopathologic analysis diagnosed a nephroblastoma. Following this, the dog underwent multimodal therapy, including multiple surgeries, 2 courses of radiation, and combination chemotherapy. The dog had serial restaging using MRI, computed tomography (CT), and fluorine-18 fluorodeoxyglucose positron emission tomography/computed tomography throughout the course of therapy. The dog survived 350 d from date of first presentation until humane euthanasia was elected due to worsening of neurologic status. During postmortem examination, extensive infiltration of the spinal cord by nephroblastoma cells was discovered as well as pulmonary metastatic disease. Key clinical message: Based on the literature search, this is the first case in which surgery, radiation therapy, and chemotherapy were all used for the treatment of canine spinal nephroblastoma. This case report details the aggressive nature of a case of canine spinal nephroblastoma despite multi-modal therapy.
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Affiliation(s)
- Powell T Slinkard
- College of Veterinary Medicine and Biomedical Sciences (CVMBS) (Slinkard, Lana), Department of Microbiology, Immunology, and Pathology (MIP) (Frank), and Department of Environmental and Radiological Health Sciences (ERHS) (Griffin), Colorado State University, Fort Collins, Colorado 80523, USA
| | - Susan E Lana
- College of Veterinary Medicine and Biomedical Sciences (CVMBS) (Slinkard, Lana), Department of Microbiology, Immunology, and Pathology (MIP) (Frank), and Department of Environmental and Radiological Health Sciences (ERHS) (Griffin), Colorado State University, Fort Collins, Colorado 80523, USA
| | - Chad B Frank
- College of Veterinary Medicine and Biomedical Sciences (CVMBS) (Slinkard, Lana), Department of Microbiology, Immunology, and Pathology (MIP) (Frank), and Department of Environmental and Radiological Health Sciences (ERHS) (Griffin), Colorado State University, Fort Collins, Colorado 80523, USA
| | - Lynn R Griffin
- College of Veterinary Medicine and Biomedical Sciences (CVMBS) (Slinkard, Lana), Department of Microbiology, Immunology, and Pathology (MIP) (Frank), and Department of Environmental and Radiological Health Sciences (ERHS) (Griffin), Colorado State University, Fort Collins, Colorado 80523, USA
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Nakaichi M, Iseri T, Horikirizono H, Itoh H, Sunahara H, Nemoto Y, Itamoto K, Tani K. A long survival case of spinal nephroblastoma in a dog. Open Vet J 2022; 12:188-191. [PMID: 35603077 PMCID: PMC9109834 DOI: 10.5455/ovj.2022.v12.i2.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Accepted: 02/28/2022] [Indexed: 11/13/2022] Open
Abstract
Background: Dogs’ nephroblastoma of the spinal cord is a rare neoplastic disease, with few reports of long-term survival after surgery. We experienced that surgical treatment with postoperative radiation therapy for spinal nephroblastoma in a dog resulted in the long-term survival of 11 years. Case Description: The patient presented to our veterinary hospital because of progressive hindlimb paralysis. Based on diagnostic imaging, she was diagnosed with a thoracolumbar spinal cord tumor and was treated with surgery. The gross tumor tissue was removed after laminectomy, followed by postoperative radiation therapy using orthovoltage equipment. The histopathological features of the surgical specimen were consistent with those of previously reported spinal nephroblastoma, although infrequent mitotic figures were observed. The dog recovered well after treatment and resumed her normal walking condition. No tumor recurrence was observed on periodic follow-up magnetic resonance imaging performed 10 and 21 months after surgery. Imaging evaluation for the gradual development of hindlimb weakness was performed 9 years after surgery; however, no recurrence of tumor tissue was observed, and spondylosis deformans, probably induced after laminectomy, were identified as a possible cause. The dog died of aspiration pneumonia 11 years after surgery, independent of spinal nephroblastoma. Conclusion: To date, no clinical cases of canine spinal cord primary nephroblastoma that survived for 11 years after surgery have been reported. This case strongly suggests that providing intensive treatment for canine spinal nephroblastoma is very important.
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Affiliation(s)
- Munekazu Nakaichi
- Department of Veterinary Radiology, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
- Corresponding Author: Munekazu Nakaichi. Department of Veterinary Radiology, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Japan.
| | - Toshie Iseri
- Department of Veterinary Radiology, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
| | - Hiro Horikirizono
- Department of Veterinary Radiology, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
| | - Harumichi Itoh
- Department of Veterinary Small Animal Clinical Science, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
| | - Hiroshi Sunahara
- Department of Veterinary Surgery, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
| | - Yuki Nemoto
- Department of Veterinary Surgery, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
| | - Kazuhito Itamoto
- Department of Veterinary Small Animal Clinical Science, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
| | - Kenji Tani
- Department of Veterinary Surgery, Joint Faculty of Veterinary Science, Yamaguchi University, Yamaguchi, Japan
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Evans J, Ward J, Domenig O, Mochel JP, Creevy K. Suspected primary hyperreninism in a cat with malignant renal sarcoma and global renin-angiotensin-aldosterone system upregulation. J Vet Intern Med 2022; 36:272-278. [PMID: 34859924 PMCID: PMC8783369 DOI: 10.1111/jvim.16329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 11/14/2021] [Accepted: 11/17/2021] [Indexed: 12/01/2022] Open
Abstract
A 14-year-old male castrated domestic medium-hair cat with diabetes mellitus was evaluated for vomiting, diarrhea, and anorexia. Two weeks before presentation, the cat had been diagnosed with congestive heart failure and started on furosemide. Initial diagnostic testing identified hypokalemia, systemic hypertension, and hypertrophic cardiomyopathy phenotype, and plasma aldosterone concentration was moderately increased. Abdominal ultrasound examination disclosed bilateral adrenomegaly and a right renal mass, and cytology of a needle aspirate of the mass was consistent with malignant neoplasia. The cat was treated with amlodipine and spironolactone. Because of the unusual presentation for hyperaldosteronism, a comprehensive profile of renin-angiotensin-aldosterone system (RAAS) peptides was performed. Results from multiple timepoints indicated persistently and markedly increased plasma renin activity and generalized RAAS upregulation. In addition to the lack of adrenal tumor, the markedly increased plasma renin activity was atypical for primary hyperaldosteronism. These clinical findings are suggestive of primary hyperreninism, a condition previously unreported in cats. The concurrent presence of a renal neoplasm suggests the possibility of a renin-secreting tumor.
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Affiliation(s)
- Jeremy Evans
- Department of Small Animal Clinical SciencesTexas A&M College of Veterinary Medicine & Biomedical SciencesCollege StationTexasUSA
| | - Jessica Ward
- Veterinary Clinical SciencesIowa State University College of Veterinary MedicineAmesIowaUSA
| | | | - Jonathan P. Mochel
- Department of Biomedical Sciences, SMART PharmacologyIowa State UniversityAmesIowaUSA
| | - Kate Creevy
- Department of Small Animal Clinical SciencesTexas A&M College of Veterinary Medicine & Biomedical SciencesCollege StationTexasUSA
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Culp WTN, Johnson EG, Palm CA, Burton JH, Rebhun RB, Rodriguez CO, Kent MS, Glaiberman CB. Use of percutaneous microwave ablation in the treatment of retroperitoneal neoplasia in three dogs. J Am Vet Med Assoc 2021; 259:1171-1177. [PMID: 34727078 DOI: 10.2460/javma.20.09.0505] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
CASE DESCRIPTION 3 dogs with retroperitoneal masses (2 renal and 1 located near the diaphragm) were treated by percutaneous microwave ablation (MWA). CLINICAL FINDINGS Dogs between 11 and 13 years of age weighing between 13.7 and 43.8 kg had either a renal mass (n = 2) or a mass located in the caudodorsal aspect of the retroperitoneal space near the right side of the diaphragm (1). Cytology revealed that one of the renal masses and the mass located near the diaphragm were malignant neoplasias. Findings on cytologic evaluation of a sample of the other renal mass was nondiagnostic. Maximum mass diameters ranged between 1.4 and 2.5 cm. TREATMENT AND OUTCOME All dogs were treated by percutaneous MWA. Probes were directed into tumors by use of ultrasound and CT guidance, and microwave energy was applied to each mass. Findings on imaging of each mass following MWA was consistent with successful treatment. No intraprocedural or major postprocedural complications occurred, and all dogs were discharged from the hospital within 3 days of treatment. Two dogs died at 3 and 21 months after MWA with no known local recurrence; 1 dog was still alive 64 months after treatment. CLINICAL RELEVANCE Although the indications for MWA in the treatment of neoplasia in companion animals are limited, the outcomes of dogs in the present report provided preliminary evidence that percutaneous MWA can be safely used to effectively treat retroperitoneal neoplasia. This procedure was successfully performed with image guidance in all 3 dogs.
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Johnson J, Hung G, Larson V, Manasse J, Spotswood T. Renal extramedullary plasmacytoma in a dog. Can Vet J 2021; 62:1077-1082. [PMID: 34602635 PMCID: PMC8439341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
A 10-year-old, intact male Siberian husky dog was presented for a suspected left renal cyst. Computed tomography (CT) identified a large, left kidney mass with retroperitoneal hemorrhage. A left-sided nephrectomy was performed, and histopathology confirmed a renal plasmacytoma. Perioperative screening for multiple myeloma was negative. The dog was lost to follow-up and was euthanized 11 months after surgery. A necropsy was not performed. To the authors' knowledge, this is the first case of renal extramedullary plasmacytoma in a dog. Key clinical message: This report describes the clinical presentation, and laboratory, diagnostic imaging, and surgery findings of a case of renal extramedullary plasmacytoma in a dog.
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Affiliation(s)
- Jason Johnson
- VCA Canada Calgary Animal Referral and Emergency Centre, Calgary, Alberta (Johnson, Larson, Spotswood); VCA Canada Western Veterinary Specialist and Emergency Centre, Calgary, Alberta (Hung); ANTECH Diagnostics, Fountain Valley, California, USA (Manasse)
| | - Germaine Hung
- VCA Canada Calgary Animal Referral and Emergency Centre, Calgary, Alberta (Johnson, Larson, Spotswood); VCA Canada Western Veterinary Specialist and Emergency Centre, Calgary, Alberta (Hung); ANTECH Diagnostics, Fountain Valley, California, USA (Manasse)
| | - Victoria Larson
- VCA Canada Calgary Animal Referral and Emergency Centre, Calgary, Alberta (Johnson, Larson, Spotswood); VCA Canada Western Veterinary Specialist and Emergency Centre, Calgary, Alberta (Hung); ANTECH Diagnostics, Fountain Valley, California, USA (Manasse)
| | - Jorden Manasse
- VCA Canada Calgary Animal Referral and Emergency Centre, Calgary, Alberta (Johnson, Larson, Spotswood); VCA Canada Western Veterinary Specialist and Emergency Centre, Calgary, Alberta (Hung); ANTECH Diagnostics, Fountain Valley, California, USA (Manasse)
| | - Tim Spotswood
- VCA Canada Calgary Animal Referral and Emergency Centre, Calgary, Alberta (Johnson, Larson, Spotswood); VCA Canada Western Veterinary Specialist and Emergency Centre, Calgary, Alberta (Hung); ANTECH Diagnostics, Fountain Valley, California, USA (Manasse)
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Evans SJM, Schaffer PA, Sluiter K, Simonson A, Avery PR. Pathology in Practice. J Am Vet Med Assoc 2020; 256:435-437. [PMID: 31999519 DOI: 10.2460/javma.256.4.435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Tanaka T, Akiyoshi H, Nishida H, Mie K, Lin LS, Iimori Y, Okamoto M. Contrast-enhanced computed tomography findings of canine primary renal tumors including renal cell carcinoma, lymphoma, and hemangiosarcoma. PLoS One 2019; 14:e0225211. [PMID: 31756212 PMCID: PMC6874336 DOI: 10.1371/journal.pone.0225211] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 10/30/2019] [Indexed: 12/02/2022] Open
Abstract
In veterinary medicine, abdominal ultrasonography is used to rank the differential diagnosis of renal lesions. However, a conventional sonographic examination may show nonspecific findings. The purpose of this study was to assess the computed tomography (CT) findings of canine renal tumors, including renal cell carcinoma (RCC), lymphoma, and hemangiosarcoma (HSA). In this retrospective study, the following CT parameters were recorded for each dog: 1) extent of renal involvement of tumors, 2) enhancement pattern, 3) number of renal tumors, 4) renal tumor vessel enhancement in the corticomedullary phase, 5) presence of lymphadenopathy and lung metastasis, and 6) attenuation values of the renal tumors on the pre- and post-contrast corticomedullary, nephrographic, and excretory phase images. Fifteen dogs met the inclusion criteria, of which nine had RCCs, four had lymphomas, and two had HSAs. RCCs tended to show heterogeneous enhancement and unilateral renal involvement, and vessel enhancement was detected in the corticomedullary phase in dogs with RCC. Conversely, renal lymphomas showed homogeneous enhancement, bilateral renal involvement, and multiple masses; in these dogs, no vessel enhancement was detected in the corticomedullary phase, and the incidence of lymphadenopathy was low. However, in dogs with lymphadenopathy, the renal lymphoma was associated with regionally severe lymphadenopathy. Finally, renal HSAs tended to show heterogeneous enhancement with a non-enhanced area and unilateral renal involvement; in these dogs, vessel enhancement was detected in the nephrographic phase, with the enhancement expanding around the vessel. These findings had no significant differences. Further studies with a larger sample size are required to examine the association between CT and histopathological findings.
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Affiliation(s)
- Toshiyuki Tanaka
- Laboratory of Veterinary Surgery, Osaka Prefecture University, Department of Graduate School of Life and Environmental Sciences, Osaka, Japan
- Kinki Animal Medical Training Institute and Veterinary Clinic, Osaka, Japan
| | - Hideo Akiyoshi
- Laboratory of Veterinary Surgery, Osaka Prefecture University, Department of Graduate School of Life and Environmental Sciences, Osaka, Japan
- * E-mail:
| | - Hidetaka Nishida
- Laboratory of Veterinary Surgery, Osaka Prefecture University, Department of Graduate School of Life and Environmental Sciences, Osaka, Japan
| | - Keiichiro Mie
- Laboratory of Veterinary Surgery, Osaka Prefecture University, Department of Graduate School of Life and Environmental Sciences, Osaka, Japan
| | - Lee-Shuan Lin
- Laboratory of Veterinary Diagnostic Imaging, College of Veterinary Medicine, Department of Veterinary Medicine, National Pingtung University of Science and Technology, Neipu, Taiwan
| | - Yasumasa Iimori
- Laboratory of Veterinary Surgery, Osaka Prefecture University, Department of Graduate School of Life and Environmental Sciences, Osaka, Japan
| | - Mari Okamoto
- Laboratory of Veterinary Surgery, Osaka Prefecture University, Department of Graduate School of Life and Environmental Sciences, Osaka, Japan
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12
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Abstract
Cytologic evaluation of the urinary tract can be diagnostically rewarding in cases of renomegaly or when discrete kidney or bladder masses are identified. Cytology can often help to distinguish between cystic, inflammatory, and neoplastic disorders. Various types of cystic and benign urinary tract lesions, diseases associated with urinary tract inflammation, and the cytologic differences between primary and metastatic neoplasms of the kidney and bladder are described. Basic sampling techniques for urinary tract cytology are also discussed.
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Affiliation(s)
- Kathryn L Wycislo
- Department of Pathology and Population Medicine, Midwestern University College of Veterinary Medicine, 5715 West Utopia Road, Glendale, AZ 85308, USA.
| | - Tara L Piech
- Department of Pathology and Population Medicine, Midwestern University College of Veterinary Medicine, 5715 West Utopia Road, Glendale, AZ 85308, USA
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13
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Sakaguchi K, Wakamatsu N. Pathology in Practice. J Am Vet Med Assoc 2018; 253:567-569. [PMID: 30110209 DOI: 10.2460/javma.253.5.567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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14
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Kiefer I, Glowienka N, Pfleghaar S, Köhler C, Niesterok C, Alef M. [Nephroblastoma in a 2-year-old female dog]. Tierarztl Prax Ausg K Kleintiere Heimtiere 2018; 46:265-270. [PMID: 30149409 DOI: 10.15654/tpk-170822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
An intact female 2-year-old boxer presented with polydipsia, polyuria, and decreased feed intake. Palpation of the abdomen was painful. Sonography revealed an abdominal mass of the left kidney causing displacement of the organs located in the cranial and mid-abdomen. Dimen sion and invasiveness of the process were evaluated both by contrast enhanced ultrasound (CEUS) and contrast-enhanced computed tomography. Histopathological examination of a biopsy sample revealed a nephroblastoma. The case report describes the clinical, sonographic, and computed tomographic results and the outcome in the untreated dog over a period of 5 months.
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15
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Kwon YJ, Suh GH, Kang SS, Kim HJ. Successful management of proteinuria and systemic hypertension in a dog with renal cell carcinoma with surgery, telmisartan, and amlodipine. Can Vet J 2018; 59:759-762. [PMID: 30026623 PMCID: PMC6005071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
An 11-year-old neutered male Yorkshire terrier dog was presented with a 3-week history of hematuria and anorexia. A unilateral renal mass was detected and surgically removed. The renal mass was diagnosed on histopathologic examination as a renal carcinoma. Supportive medical therapy was carried out and persistent systemic hypertension was managed using telmisartan.
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Affiliation(s)
- Yong-Jin Kwon
- College of Veterinary Medicine, Chonnam National University, Gwangju 500-757, Korea
| | - Guk-Hyun Suh
- College of Veterinary Medicine, Chonnam National University, Gwangju 500-757, Korea
| | - Seong-Soo Kang
- College of Veterinary Medicine, Chonnam National University, Gwangju 500-757, Korea
| | - Ha-Jung Kim
- College of Veterinary Medicine, Chonnam National University, Gwangju 500-757, Korea
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16
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Cremer J, Rademacher N, Bennett RA, Bauer RW. What Is Your Diagnosis? J Am Vet Med Assoc 2018; 252:1345-1347. [PMID: 29772975 DOI: 10.2460/javma.252.11.1345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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17
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18
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19
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Rahmati-Holasoo H, Shokrpoor S, Masoudifard M, Ebrahimzadeh Mousavi H, Haddadi A, Tavakkoli A. Renal Cystic Adenocarcinoma in a Flowerhorn Cichlid with Metastatic Involvement of the Spleen. J Aquat Anim Health 2017; 29:158-164. [PMID: 28679080 DOI: 10.1080/08997659.2017.1349008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A 480-g flowerhorn cichlid (an ornamental hybrid) with severe bilateral abdominal swelling, bulla-like structures on the skin, bilateral exophthalmia, and a prolapsed intestine was presented. Radiographs showed compression of the posterior part of the swim bladder and abdominal distention. Ultrasonography of visceral organs revealed a heterogeneous mass with hypoechoic to anechoic polycystic parenchyma and free fluid in the abdominal cavity. At necropsy, free fluid in the abdominal cavity and a large polycystic mass originating from the posterior kidney were observed. Histologically, the mass was composed of more cystic growth of tubules. The renal architecture was replaced by tubules, often irregular in shape, lined by simple to lightly stratified layers of neoplastic and pleomorphic cuboidal to columnar epithelial cells and the absence of glomeruli. Birefringent crystals were observed with polarized light within the lumen of some tubules. The apical border of the neoplastic cells was periodic acid-Schiff positive. Immunohistochemically, the neoplastic cells were positive for cytokeratin AE1/AE3 and proliferating cell nuclear antigen and were negative for p53 (tumor suppressor protein). Microscopic metastasis was seen in the spleen. The metastatic tumor was classified as a cystic adenocarcinoma of the kidney, originating from the proximal tubules. Received October 7, 2016; accepted June 18, 2017.
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Affiliation(s)
- Hooman Rahmati-Holasoo
- a Department of Aquatic Animal Health, Faculty of Veterinary Medicine , University of Tehran , Post Office Box 14155-6453 , Tehran , Iran
| | - Sara Shokrpoor
- b Department of Pathology, Faculty of Veterinary Medicine , University of Tehran , Post Office Box 14155-6453 , Tehran , Iran
| | - Majid Masoudifard
- c Department of Surgery and Radiology, Faculty of Veterinary Medicine , University of Tehran , Post Office Box 14155-6453 , Tehran , Iran
| | - HosseinAli Ebrahimzadeh Mousavi
- a Department of Aquatic Animal Health, Faculty of Veterinary Medicine , University of Tehran , Post Office Box 14155-6453 , Tehran , Iran
| | - Ali Haddadi
- a Department of Aquatic Animal Health, Faculty of Veterinary Medicine , University of Tehran , Post Office Box 14155-6453 , Tehran , Iran
| | - Amir Tavakkoli
- c Department of Surgery and Radiology, Faculty of Veterinary Medicine , University of Tehran , Post Office Box 14155-6453 , Tehran , Iran
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20
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Romanucci M, Massimini M, Valerii V, Malatesta D, Bongiovanni L, Della Salda L. Pathology in Practice. J Am Vet Med Assoc 2017; 250:1251-1253. [PMID: 28509646 DOI: 10.2460/javma.250.11.1251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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21
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22
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Abstract
Primary renal tumors are rare neoplasms in nonhuman primates. This report describes a mixed epithelial and stromal tumor of the kidney (MESTK) in a 14.5-year-old female ringtail lemur. The well-demarcated, solid, and cystic mass was located in the pelvis of the left kidney and consisted histologically of both epithelial and mesenchymal components. The mesenchymal cells were arranged in fascicles around cysts lined by a well-differentiated epithelium. Neither the mesenchymal nor the epithelial parts showed significant nuclear atypia or mitotic figures. To our knowledge, only 1 similar case, classified as adenoleiomyofibromatous hamartoma, has been reported in a ringtail lemur. In humans this tumor affects predominantly perimenopausal women and can express estrogen and progesterone receptors. However, neither estrogen nor progesterone receptors could be identified by immunohistochemistry in the tumor of the present ringtail lemur. Therefore, a hormonal mechanism could not be demonstrated in this case.
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Affiliation(s)
- S Muller
- Institute for Animal Pathology, University of Berne, Berne, Switzerland.
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23
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Abstract
Apparently synchronous, aggressive, mixed mesenchymal tumors in the right tibia, right femur, left femur, and rib cage produced multiple microscopic metastases in the lungs and macroscopic metastases in the liver, kidney, and spleen in a 1.5-year-old, neutered male, mixed-breed dog. No primary soft tissue tumor mass was present. Microscopically, the neoplasm exhibited osteosarcomatous, chondrosarcomatous, liposarcomatous, leiomyosarcomatous, fibrosarcomatous, angiosarcomatous, and leukocytic differentiation and was diagnosed as a multipotential osteosarcoma with various mesenchymal differentiation. Immunohistochemically, the neoplasm was cytoplasmically immunoreactive for vimentin, osteonectin, osteocalcin, CD 18, CD 31, desmin, and muscle-specific actin. Oil Red O staining was positive within liposarcomatous areas. Skeletal metastases from a primary bone tumor are exceedingly rare in human and veterinary medicine. However, the history, clinical signs, location, microscopic and immunohistochemical features were similar to those described in aggressive, poorly differentiated osteosarcomas of children. In addition, the wide range of mesenchymal tissue differentiation of this neoplasm was unusual, and to the authors' knowledge, an osteosarcoma with this degree of multiple differentiation has not been previously reported in the dog.
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Affiliation(s)
- M J Hoenerhoff
- Department of Pathobiology and Diagnostic Investigation, Diagnostic Center for Population and Animal Health, College of Veterinary Medicine, Michigan State University, East Lansing, MI 48823, USA
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24
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De Cock HEV, Busch MDM, Fry MM, Mehl M, Bollen AW, Higgins RJ. A Peripheral Primitive Neuroectodermal Tumor with Generalized Bone Metastases in a Puppy. Vet Pathol 2016; 41:437-41. [PMID: 15232149 DOI: 10.1354/vp.41-4-437] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
A peripheral primitive neuroectodermal tumor (pPNET), most consistent with a human Ewing's sarcoma, is described in a 5-month-old male Australian Shepherd puppy. The first tumor site detected was in the left frontal bone of the skull with apparent subsequent rapid metastases to multiple sites in the axial and appendicular skeleton and bone marrow, kidneys, and perihyphophyseal meninges. Radiographically, all bone lesions were lytic and there was also a humeral bone fracture. Histologically, the tumor was diagnosed as a small round blue cell tumor. At this stage, the differential diagnosis included a lymphoma, rhabdomyosarcoma, and a PNET of the peripheral nervous system. However, the cells had positive expression of triple neurofilament antigens as detected immunocytochemically. The cells were negative for a broad panel of canine-specific leucocyte cell marker antigens for desmin, smooth muscle actin, synaptophysin, and CD99. Ultrastructurally, the cells contained occasional dense core neurosecretory granules and intermediate filaments with intercellular desmosomal-like junctions and abundant glycogen clusters. Based on the age of the dog, the clinical history, the distribution of gross lesions, histologic characteristics of a small round blue cell tumor, and immunocyto-chemical and ultrastructural evidence of neuroectodermal differentiation, a diagnosis of a pPNET similar to a human Ewing's sarcoma was made.
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Affiliation(s)
- H E V De Cock
- Department of Pathology, Microbiology and Immunology, One Shields Avenue, Davis, CA 95616, USA.
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25
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Abstract
Nephroblastoma is the most common primary renal tumor in children and has also been reported in domestic and nondomestic animal species. Intrapelvic renal nephroblastoma is a rare variant of this tumor type in human patients. Postmortem examination of a captive meerkat ( Suricata suricatta), which was found dead, revealed enlargement of the pelvis of the left kidney by a tumor mass. Gross, histological, and immunohistochemical findings were consistent with a diagnosis of triphasic intrapelvic renal nephroblastoma. This is the first reported spontaneous case of intrapelvic renal nephroblastoma in a nonhuman species.
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Affiliation(s)
- Bhanu P Singh
- Department of Pathology and Infectious Diseases, The Royal Veterinary College, Hertfordshire, United Kingdom
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26
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Froment R, Gara-Boivin C. Bilateral renal T-cell lymphoma with hepatic infiltration and secondary polycythemia in a dog: Utility of cytology slides. Can Vet J 2015; 56:1287-1291. [PMID: 26663927 PMCID: PMC4668813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This is a case of bilateral renal T-cell lymphoma associated with secondary erythrocytosis in a dog. This case is distinctive in using clonality combined with immunocytochemistry to support the diagnosis, thus emphasizing the utility of cytology slides when histology is unavailable. This combination may be a unique canine lymphoma entity.
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Affiliation(s)
- Rémi Froment
- Address all correspondence to Dr. Rémi Froment; e-mail:
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27
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Duffy DJ, Kendall AR, Thamm DH, Marolf AJ. What Is Your Diagnosis? Renal adenocarcinoma. J Am Vet Med Assoc 2015; 247:247-9. [PMID: 26176722 DOI: 10.2460/javma.247.3.247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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28
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Song SH, Park NW, Eom KD. Positron emission tomography/computed tomography imaging features of renal cell carcinoma and pulmonary metastases in a dog. Can Vet J 2014; 55:466-470. [PMID: 24790233 PMCID: PMC3992308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A 9-year-old spayed female cocker spaniel dog was referred for hematuria. A large abdominal mass and multiple pulmonary nodules were identified radiographically. A whole-body 2-deoxy-2-[(18)F]fluoro-d-glucose positron emission tomography/computed tomography (PET/CT) scan revealed intensely increased uptake in a renal mass and the pulmonary nodules. Renal cell carcinoma was diagnosed on histological examination.
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Affiliation(s)
| | | | - Ki-Dong Eom
- Address all correspondence to Dr. Ki-Dong Eom; e-mail:
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29
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Denstedt E. Suspected disseminated histiocytic sarcoma in a 3-year-old Perro de Presa Canario dog. Can Vet J 2014; 55:181-184. [PMID: 24489399 PMCID: PMC3894880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A 3-year-old intact male Perro de Presa Canario dog was presented with acutely inflamed and edematous right hind limb, scrotum, prepuce, and an enlarged left carpus. Two weeks later the dog returned with weight loss, draining tracts in the right hind limb, dermal nodules, a palpable abdominal mass, and uveitis in the left eye. The dog succumbed to his illness 2 days later and a widely disseminated round cell tumor compatible with histiocytic sarcoma was diagnosed following postmortem examination.
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Affiliation(s)
- Emily Denstedt
- Address all correspondence to Ms. Emily Denstedt; e-mail:
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30
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Goodwin EM, Zhong Q, Abendroth CS, Ward-Kavanagh LK, Schell TD, Cooper TK. Anaplastic renal carcinoma expressing SV40 T antigen in a female TRAMP mouse. Comp Med 2013; 63:338-341. [PMID: 24209969 PMCID: PMC3750669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2012] [Revised: 11/27/2012] [Accepted: 01/29/2013] [Indexed: 06/02/2023]
Abstract
An 8-mo-old female transgenic adenocarcinoma of the mouse prostate (C57BL/6-Tg(TRAMP)8247Ng/J) mouse presented with abdominal distention, lethargy, and serosanguineous vaginal discharge. A large primary renal tumor with metastases to lung and liver was present at necropsy. The tumor was composed of poorly differentiated and crowded epithelial cells forming ducts, acini, and cribriform patterns, with comedonecrosis and frequent bizarre mitoses. Immunohistochemistry revealed that neoplastic cells expressed nuclear SV40 T antigen, confirming aberrant expression of the transgene. In addition, cells were positive for pancytokeratin and negative for synaptophysin and estrogen and progesterone receptors. This report details the first transgene-induced tumor in a female TRAMP mouse.
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Affiliation(s)
- Erin M Goodwin
- Department of Comparative Medicine, Cedars-Sinai Medical Center, Los Angeles, California
| | | | | | - Lindsay K Ward-Kavanagh
- Department of Microbiology and Immunology, Penn State College of Medicine, Hershey Medical Center, Hershey, Pennsylvania
| | - Todd D Schell
- Department of Microbiology and Immunology, Penn State College of Medicine, Hershey Medical Center, Hershey, Pennsylvania
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31
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Montinaro V, Boston SE, Stevens B. Renal nephroblastoma in a 3-month-old golden retriever. Can Vet J 2013; 54:683-686. [PMID: 24155463 PMCID: PMC3685002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Nephrectomy was performed in a 3-month-old intact female golden retriever dog for a renal nephroblastoma. The dog has remained disease-free for 19 months with nephrectomy alone. The adoption of human Wilms' tumor grading criteria may be useful in determining clinical stage, adjuvant treatment options, and prognosis in this rare disease.
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Schmidt S, Nerschbach V, Eberle N, Mischke R, Nolte I, Betz D. [Renal lymphoma in a cat: diagnostics, therapy and survival time. A case report]. Tierarztl Prax Ausg K Kleintiere Heimtiere 2012; 40:271-277. [PMID: 22911259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 11/21/2011] [Accepted: 04/16/2012] [Indexed: 06/01/2023]
Abstract
The clinical case report describes diagnostics, therapy, response and outcome in a 7-year-old castrated male European Shorthair cat with renal lymphoma. By use of a combination chemotherapy, partial remission was achieved 8 days after induction, with a complete remission after 72 days. During chemotherapy the cat had a good quality of life. Adverse effects were limited to two episodes of vomiting and one short period of slight depression. At 629 days after the end of the chemotherapy, following 1449 days in remission, a relapse of the renal lymphoma was diagnosed. During the second chemotherapy, extension of the lymphoma to the CNS became apparent and the cat was euthanized after an overall survival time of 1509 days (4 years). The case shows that treating renal lymphoma in cats by adequate combination chemotherapy can achieve long survival times with a good quality of life.
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Affiliation(s)
- S Schmidt
- Klinik für Kleintiere, Stiftung Tierärztliche Hochschule Hannover, Bünteweg 9, 30559 Hannover.
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33
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Jean SM, Morales PR, Paul K, Garcia A. Spontaneous primary squamous cell carcinoma of the lung in a rhesus macaque (Macaca mulatta). J Am Assoc Lab Anim Sci 2011; 50:404-408. [PMID: 21640039 PMCID: PMC3103294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 09/24/2010] [Revised: 10/27/2010] [Accepted: 12/20/2010] [Indexed: 05/30/2023]
Abstract
A 3-y-old male rhesus macaque (Macaca mulatta) was noticed to be lethargic in the compound. Physical exam revealed cyanotic mucous membranes, dyspnea, bilateral harsh lung sounds, wheezing on expiration, and a firm mass possibly associated with the liver. Radiographs revealed bilateral soft tissue opacities in the thorax. Due to poor prognosis, the rhesus was euthanized, and a necropsy was performed. Both right and left lung lobes were consolidated and had multifocal white-tan masses. On cut section, the masses were firm, had areas of necrosis, hemorrhage, and often contained a tenacious exudate. Masses were identified in the liver and both kidneys. Given the morphologic features of the neoplasm, a diagnosis of squamous cell carcinoma was made. Immunohistochemistry staining for thyroid transcription factor, a nuclear transcription factor normally found in lung, thyroid, and tumors arising from either of those tissues, confirmed that the masses originated from the lung. Malignant primary lung tumors are divided into 8 main histologic subtypes: squamous cell carcinoma, small-cell carcinoma, large-cell carcinoma, adenocarcinoma, adenosquamous carcinoma, sarcomatoid carcinoma, carcinoid tumor, and salivary gland tumors. Clinical signs associated with lung tumors include, but are not limited to, dyspnea, coughing, hemoptysis, lethargy, anorexia, and weight loss. Although squamous cell carcinoma will be low on the differential list for these clinical signs, we encourage clinicians and researchers to not rule it out solely based on incidence and age of the animal.
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Affiliation(s)
- Sherrie M Jean
- Department of Animal Resources, University of Southern California, Los Angeles, California
| | | | - Katherine Paul
- Centers for Disease Control and Prevention, Atlanta, Georgia
| | - AnaPatricia Garcia
- Division of Pathology, Yerkes National Primate Research Center and
- Department of Pathology and Laboratory Medicine, School of Medicine, Emory University, Atlanta, Georgia
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Hess M. Anaplastic renal spindle cell sarcoma in a dog. J Small Anim Pract 2010; 51:407. [PMID: 20626788 DOI: 10.1111/j.1748-5827.2010.00971.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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35
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Romero A, Rodgerson DH, Fontaine GL. Hand-assisted laparoscopic removal of a nephroblastoma in a horse. Can Vet J 2010; 51:637-639. [PMID: 20808577 PMCID: PMC2871363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A 3-year-old Thoroughbred was presented for evaluation of hematuria post exercise. On physical examination, an enlarged kidney was identified, as well as serum biochemical abnormalities such as an elevated creatine kinase (CK) and hypoalbuminemia. The kidney was removed laparoscopically and a nephroblastoma was identified.
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Affiliation(s)
- Alfredo Romero
- The Davidson Surgery Center, Hagyard Equine Medical Institute, Lexington, Kentucky 40505, USA.
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36
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37
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Hochwartner O, Loupal G, Wildgoose WH, Schmidt-Posthaus H. Occurrence of spontaneous tumours of the renal proximal tubules in oscars Astronotus ocellatus. Dis Aquat Organ 2010; 89:185-189. [PMID: 20402236 DOI: 10.3354/dao02149] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
This report describes the occurrence of renal papillary cystic adenomas and adenocarcinomas in oscars Astronotus ocellatus Cuvier, 1829. Samples from 5 oscars with abdominal swelling were collected between 1996 and 2004 and compared to a published case from the USA. Macroscopically, all cases revealed a large, well-demarcated, greyish-brown nodular mass in a retroperitoneal position within the body cavity, and originating from the posterior kidney. Histologically, these neoplasms were composed of epithelial cells, which were arranged in papillary cystic tubular structures and partly covered by cilia. In this study, microscopic and ultrastructural examination confirmed that the origin of the neoplasm was the proximal tubules of the kidney.
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38
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Kummerfeld M, Knieriem A, Wohlsein P. [Osteomyelitis and papillary renal adenoma in a red panda (Ailurus fulgens fulgens)]. Dtsch Tierarztl Wochenschr 2008; 115:421-425. [PMID: 19024549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A 13 year-old female Red Panda (Ailurus fulgens fulgens) kept in a zoological garden was euthanatized due to poor general condition. Pathological examination revealed a chronic bacterial ulcerative to necrotizing dermatitis and osteomyelitis at the lower jaw with subsequent pyogranulomatous pneumonia and diffuse hydropic degeneration of the liver. Additionally, in the kidney a papillary renal adenoma was found. Immunohistochemistry revealed an expression of cytokeratins 8 and/or 19 indicating an origin from the renal tubular epithelium.
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Affiliation(s)
- M Kummerfeld
- Institut für Pathologie, Stiftung Tierärztliche Hochschule Hannover
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39
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Abstract
An eight-year-old, neutered male Burmese cat presented with five days vomiting and anorexia. Physical examination, clinical pathology and diagnostic imaging findings suggested a perirenal pseudocyst. After partial resection of the perirenal capsule clinical signs temporarily resolved, but the cat was euthanased 34 days postoperatively as a result of seizures and recurrence of vomiting. Postoperative histopathology showed neoplastic transitional cells within and lining the resected perirenal capsule; a diagnosis of transitional cell carcinoma was confirmed post-mortem. To the authors' knowledge, this is the first report of this presentation of transitional cell carcinoma. Transitional cell carcinoma should be a differential diagnosis for the aetiology of perirenal pseudocyst.
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Affiliation(s)
- E Raffan
- Small Animal Teaching Hospital, University of Liverpool, Leahurst, Chester High Road, Neston, Cheshire CH64 7TE, UK
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40
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Abstract
An 11-year-old domestic shorthair was examined after an enlarged left kidney was palpated by the referring veterinarian. No abnormalities were noted on complete blood count, serum biochemical profile and total thyroxine concentration, and the urine specific gravity was 1.039. An abdominal ultrasound identified the presence of a large cystic structure on the caudal pole of the left kidney. No abnormalities of the right kidney were seen. A left ureteronephrectomy was performed, and the cat recovered uneventfully from the procedure and was discharged from the hospital 5 days after surgery. The cat remains clinically normal 16 months postoperatively. Histopathology of the removed kidney demonstrated the presence of a renal cystadenoma. This report describes the successful surgical treatment of a renal cystadenoma. Renal cystadenoma should be considered as a differential diagnosis when renomegaly is noted. To the author's knowledge, a renal cystadenoma has not been previously reported in a cat.
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Affiliation(s)
- Ariel S Mosenco
- Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Philadelphia 19104-6010, United States.
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41
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Abstract
The purpose of this study was to investigate the association between renal hypoechoic subcapsular thickening observed ultrasonographically and the presence of renal lymphosarcoma in cats. The ultrasonography database was retrospectively searched for cats that underwent ultrasound examination and ultrasound guided needle renal aspirate, renal biopsy, or necropsy. One radiologist unaware of the final diagnosis evaluated the images for the presence of hypoechoic subcapsular thickening and other abnormal findings. Fifty-four cats met the inclusion criteria. Hypoechoic subcapsular thickening was found in 21 cats of which 17 had lymphosarcoma; the remaining four cats had a different diagnosis. Eleven out of 33 cats without hypoechoic subcapsular thickening were positive for lymphosarcoma, and the rest had a different diagnosis. There was a significant association between hypoechoic subcapsular thickening and renal lymphosarcoma (P = 0.001). The positive predictive value of hypoechoic subcapsular thickening for lymphosarcoma was 80.9% and the negative predictive value was 66.7%. The sensitivity and specificity of hypoechoic subcapsular thickening for the diagnosis of renal lymphosarcoma were 60.7% and 84.6%, respectively. The results of this study indicate that the presence of hypoechoic subcapsular thickening in feline kidneys is associated with renal lymphosarcoma.
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Affiliation(s)
- Alejandro Valdés-Martínez
- Department of Clinical Studies, Section of Radiology, Ryan Veterinary Hospital, University of Pennsylvania, 3900 Delancey Street, Philadelphia, PA 19104, USA.
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42
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Grillo TP, Brandão CV, Mamprim MJ, de Jesus CM, Santos TC, Minto BW. Hypertrophic osteopathy associated with renal pelvis transitional cell carcinoma in a dog. Can Vet J 2007; 48:745-7. [PMID: 17824162 PMCID: PMC1899852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
A 6-year-old male, Belgian shepherd dog was presented with lethargy, oliguria, hematuria, and reluctance to move. The dog developed hypertrophic osteopathy secondary to renal pelvis transitional cell carcinoma. A nephrectomy was performed and after a year, the dog was completely asymptomatic, and no evidence of metastatic disease was present.
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Affiliation(s)
| | - Cláudia V.S. Brandão
- Address all correspondence and reprint requests to Dr. Claúdia Valéria Seullner Brandão; e-mail:
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43
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Chiang YC, Liu CH, Ho SY, Lin CT, Yeh LS. Hypertrophic osteopathy associated with disseminated metastases of renal cell carcinoma in the dog: a case report. J Vet Med Sci 2007; 69:209-12. [PMID: 17339768 DOI: 10.1292/jvms.69.209] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A 6-year-old, mixed breed, intact male dog showed signs of left carpal joint swelling and weakness of the forelimbs one month before presentation. The symptoms gradually progressed to bilateral carpal and tarsal joint swelling and tetraparalysis. There were a number of radiographically identified lytic-proliferative bone lesions noted on the axial skeleton. Hypertrophic osteopathy of the metacarpi and all distal long bones was also evident. Because of the deteriorating quality of life and guarded prognosis, the patient was euthanized and a complete necropsy was performed. Renal cell carcinoma, with metastasis to the lung, thoracic vertebrae, ribs, and the right adrenal gland, was diagnosed. To our knowledge, renal cell carcinoma with bone metastases and hypertrophic osteopathy has not been reported in dogs.
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Affiliation(s)
- Yu-Ching Chiang
- Department of Veterinary Medicine, College of Bio-Resource and Agriculture, National Taiwan University, Taipei, Taiwan, ROC
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44
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Abstract
BACKGROUND Hemangiosarcoma (HSA) is a highly metastatic and often rapidly fatal tumor of dogs. At present, adjuvant chemotherapy is the only proven effective treatment for dogs with HSA, though the benefits from chemotherapy are modest. Administration of immunotherapy together with chemotherapy has also been reported to improve survival in dogs with HSA. Therefore, we evaluated safety and immunologic responses to a novel tumor vaccine administered together with doxorubicin chemotherapy in dogs with different stages of HSA. HYPOTHESIS That tumor vaccination could be safely and effectively combined with doxorubicin chemotherapy for treatment of dogs with HSA. ANIMALS Twenty-eight dogs with various stages of HSA were enrolled in the study. METHODS The HSA vaccine was prepared with lysates of allogeneic canine HSA cell lines mixed with an adjuvant composed of liposome-DNA complexes. Dogs received a series of 8 immunizations administered over a 22-week period, and most also received chemotherapy. Clinical adverse effects were noted, immune responses were measured by enzyme-linked immunosorbent assay (ELISA) and flow cytometry, and survival times were calculated. RESULTS The most common adverse effects observed in vaccinated dogs also treated with doxorubicin chemotherapy were diarrhea and anorexia. Vaccinated dogs were found to mount strong humoral immune responses against a control antigen and, most dogs also mounted antibody responses against canine HSA cells. Thirteen dogs with stage II splenic HSA that received the tumor vaccine plus doxorubicin chemotherapy had an overall median survival time of 182 days. CONCLUSIONS We conclude that an allogeneic tumor lysate vaccine is safe in dogs with HSA and can elicit humoral immune responses in dogs that are receiving concurrent doxorubicin chemotherapy.
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Affiliation(s)
- Lance W U'Ren
- Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins 80523, USA
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45
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Klaphake E, Shoieb A, Ramsay E, Schumacher J, Craig L. Renal adenocarcinoma, hepatocellular carcinoma, and pancreatic islet cell carcinoma in a binturong (Arctictis binturong). J Zoo Wildl Med 2007; 36:127-30. [PMID: 17315471 DOI: 10.1638/03-084] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A 19-yr-old binturong (Arctictis binturong) with acute upper respiratory disease was euthanized. Postmortem findings included hepatocellular carcinoma, pancreatic islet cell carcinoma, and renal adenocarcinoma with metastasis to the spleen, pleura, and pericardium. A link between primary hepatic and renal neoplasms has been noted in older humans.
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Affiliation(s)
- Eric Klaphake
- Department of Small Animal Clinical Sciences, The University of Tennessee College of Veterinary Medicine, Knoxville 37996, USA
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Abstract
A 20-year-old thoroughbred mare had a mass in the right kidney. The mass was encapsulated with fibrous capsule and composed of variably-sized papillary projections lined by a single layer of flattened to cuboidal neoplastic epithelial cells with no cytological and nuclear atypia. Immunohistochemically, the neoplastic cells were broadly positive for cytokeratin AE1/AE3 and granular staining for alpha-1-antitrypsin was focally detected; this immunohistochemical property was similar to that of the normal distal nephron. From these results, this case was diagnosed as papillary renal adenoma of distal nephron differentiation.
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Affiliation(s)
- Kazuya Matsuda
- Department of Veterinary Pathology, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido 069-8501, Japan.
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47
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Headley SA, Saut JPE, Maiorka PC. Nephroblastoma in an adult sheep. Vet Rec 2006; 159:850-2. [PMID: 17172481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Affiliation(s)
- S A Headley
- Laboratório de Patologia Veterinária, Departamento de Medicina Veterinária Preventiva, Centro de Ciências Agrárias, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, Pr 445 Km 380, Cx Postal 6001, Londrina, PR, Brasil
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48
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Abstract
BACKGROUND Primary renal tumors are diagnosed uncommonly in dogs. HYPOTHESIS Signs and survival will differ among different categories of primary renal tumors. ANIMALS Data were collected from the medical records of 82 dogs with primary renal tumors diagnosed by examination of tissue obtained by ultrasound-guided biopsy, needle aspiration, surgery, or at postmortem examination. METHODS This was a multi-institutional, retrospective study. RESULTS Forty-nine dogs had carcinomas, 28 had sarcomas, and 5 had nephroblastomas. The dogs were geriatric (mean 8.1 years; range: 1-17) with a weight of 24.9 kg (range: 4.5-80). Tumors occurred with equal frequency in each kidney with 4% occurring bilaterally. Initial signs included one or more of hematuria, inappetance, lethargy. weight loss, or a palpable abdominal mass. Pain was reported more frequently in dogs with sarcomas (5/28). The most common hematologic abnormalities were neutrophilia (22/63), anemia (21/64), and thrombocytopenia (6/68). Polycythemia was present in 3 dogs and resolved with treatment. Hematuria (28/49), pyuria (26/49), proteinuria (24/50), and isosthenuria (20/56) were the most frequently observed abnormalities on urinalysis. Pulmonary metastases were noted on thoracic radiographs in 16% of dogs at diagnosis. Seventy-seven percent of dogs had metastatic disease at the time of death. Median survival for dogs with carcinomas was 16 months (range 0-59 months), for dogs with sarcomas 9 months (range 0-70 months), and for dogs with nephroblastomas 6 months (range 0-6 months). CONCLUSIONS AND CLINICAL IMPORTANCE Primary renal tumors in dogs are generally highly malignant with surgery being the only treatment that improves survival.
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Affiliation(s)
- Jeffrey N Bryan
- Department of Veterinary Medicine and Surgery, University of Missouri-Columbia, USA.
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49
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Abstract
Renal neoplasia in budgerigars (Melopsittacus undulatus) is seen regularly in general practice and is of interest to many practicing veterinary surgeons. This review article provides an overview of the current knowledge and the most recent reports in avian literature regarding renal tumours in budgerigars, with the emphasis on clinical diagnosis and treatment. The high prevalence of renal neoplasia in budgerigar is discussed, with notes on the most commonly diagnosed tumours, possibility of metastases, sex and age predisposition. The possibility of ultrasonography and radiography in the diagnosis of this pathological condition are compared as well as the possible role of blood and urine analyses. Two studies are described, both of which investigate the possible involvement of a retrovirus as the aetiological agent.
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Affiliation(s)
- S Simova-Curd
- Division of Zoo Animals, Exotic Pets and Wildlife, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, 8057 Zurich, Switzerland
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50
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Abstract
BACKGROUND Hemangiosarcoma (HSA) is a common solid tumor of the spleen, heart, and skin of dogs. Renal HSA represents an uncommon anatomic variant, with little reported about its biologic behavior and clinical outcome. HYPOTHESIS That renal HSA is associated with longer survival than other visceral forms of HSA. ANIMALS 14 dogs with renal HSA. METHODS Medical records from 1999 to 2004 were searched for dogs with histopathologically confirmed renal HSA, and data relevant to clinical signs, treatments, and outcomes were abstracted. RESULTS Clinical signs were nonspecific, and the median duration of clinical signs before diagnosis was 60 days. Two dogs presented in cardiovascular collapse secondary to hemoperitoneum. Common hematologic and biochemical abnormalities were anemia (9/14), hematuria (7/14), and proteinuria (7/14). One dog had pulmonary metastasis at diagnosis. All dogs had evidence of a renal mass visualized by abdominal radiography (14/14), ultrasound (9/14), or both. All dogs underwent nephrectomy, and 4/14 dogs also received adjunctive chemotherapy. Median survival time of all dogs was 278 days (range 0-1,005 days), and dogs with hemoperitoneum had significantly shorter survival times than dogs without hemoperitoneum (62 days versus 286 days, P < .001). CONCLUSIONS AND CLINICAL IMPORTANCE These results indicate that hemoperitoneum and distant metastasis at diagnosis appear to occur less frequently in dogs with renal HSA compared with other visceral forms of HSA. Furthermore, dogs with renal HSA have protracted disease progression, with improved 1-year survival rates and longer median survival time compared to dogs with splenic, cardiac, and retroperitoneal HSA.
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Affiliation(s)
- Jennifer E Locke
- Veterinary Clinical Sciences, College of Veterinary Medicine at Iowa State University, Ames 50011-1250, USA.
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