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Riker J, Rissi DR. A retrospective study of lingual lesions in 793 dogs and 406 cats at the Athens Veterinary Diagnostic Laboratory, 2010-2020. J Vet Diagn Invest 2024:10406387241278888. [PMID: 39267436 DOI: 10.1177/10406387241278888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/17/2024] Open
Abstract
Lingual biopsies are a common type of sample submission at the Athens Veterinary Diagnostic Laboratory (AVDL). Here we describe the pathology diagnoses of 793 canine and 406 feline lingual biopsies submitted to the AVDL in a 10-y period. Non-neoplastic lesions accounted for 450 diagnoses (57%) in dogs and 239 diagnoses (59%) in cats. Canine non-neoplastic lesions consisted of inflammatory lesions (286 cases; 64% of non-neoplastic lesions) and tumor-like proliferative lesions (164 cases; 36% of non-neoplastic lesions). Feline non-neoplastic lesions consisted of inflammatory lesions (228 cases; 95% of non-neoplastic lesions) and tumor-like proliferative lesions (11 cases; 5% of non-neoplastic lesions). The most common canine neoplasms were melanocytic neoplasms (103 cases; 30% of neoplasms) and epithelial neoplasms (102 cases; 30% of neoplasms), followed by mesenchymal neoplasms (90 cases; 26% of neoplasms) and round cell neoplasms (48 cases; 14% of neoplasms). Approximately 43% of melanocytic neoplasms affected Chow Chows and Labrador Retrievers, and 20% of epithelial neoplasms affected Labrador Retrievers. In cats, most tumors were epithelial (158 cases; 94% of neoplasms), followed by mesenchymal (8 cases; 5% of neoplasms) and round cell neoplasms (1 case; 1% of neoplasms). Over 50% of neoplasms of cats affected domestic shorthair cats. Although the percentage of lingual biopsies that had a neoplastic diagnosis was roughly the same between species, the diversity of neoplasms was much greater in dogs than in cats.
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Affiliation(s)
- Jesse Riker
- Department of Pathology, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - Daniel R Rissi
- Athens Veterinary Diagnostic Laboratory, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
- Department of Pathology, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
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2
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Maeda K, Wada S, Shimaoka C, Iwai S, Okano S. Granular cell tumor of the brachial nerve in a dog: A case report. BRAZILIAN JOURNAL OF VETERINARY MEDICINE 2024; 46:e001424. [PMID: 38840782 PMCID: PMC11152060 DOI: 10.29374/2527-2179.bjvm001424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 04/15/2024] [Indexed: 06/07/2024] Open
Abstract
Here, we describe the first case of a granular cell tumor (GCT) derived from the brachial nerve. Eleven-year-old neutered female Chihuahua presented to the hospital with a bulge from the left neck to the axilla. The dog had a spherical subcutaneous mass on the cervical subcutis, and cytology hinted at adenocarcinoma or neuroendocrine tumor. However, the origin of the tumor remains unknown. During resection of the mass, bleeding was difficult to control owing to the high blood flow, and tumor removal was extremely difficult. The caudal aspect of the mass was attached to the brachial nerve and had to be removed, along with parts of the nerve fibers. The patient's postoperative course was fair, but it developed paralysis of the left thoracic limb. Pathology revealed that the mass was positive for S100 and vimentin, and GCT was diagnosed. Non-oral GCTs are extremely rare. The clinical diagnosis of GCT is difficult and is often confirmed histopathologically by excision. Although most cases of GCT are benign, they must be recognized as hemorrhagic, indistinct masses that mimic malignancy. Excision carries the risk of hemorrhage and damage to the surrounding tissues to secure margins.
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Affiliation(s)
- Kenichi Maeda
- Veterinarian, Kitasato University School of Veterinary Medicine, Department of Small Animal Surgery 2, Japan.
| | - Seiichi Wada
- Veterinarian, Kitasato University School of Veterinary Medicine, Veterinary Radiology, Japan.
| | - Chiaki Shimaoka
- Veterinarian, Kitasato University Veterinary Teaching Hospital, Japan.
| | - Satomi Iwai
- Veterinarian, Kitasato University School of Veterinary Medicine, Department of Small Animal Surgery 2, Japan.
| | - Shozo Okano
- Veterinarian, Kitasato University School of Veterinary Medicine, Department of Small Animal Surgery 2, Japan.
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3
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Rissi DR. A review of primary central nervous system neoplasms of cats. Vet Pathol 2023; 60:294-307. [PMID: 36803009 DOI: 10.1177/03009858231155400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
Primary central nervous system (CNS) neoplasms are uncommonly diagnosed in cats. The majority of primary feline CNS neoplasms described in the veterinary literature consist of meningioma and glioma occurring mainly in the brain and less often in the spinal cord. Although most neoplasms can be diagnosed based on routine histologic evaluation, less typical tumors need to be further characterized using immunohistochemistry. This review compiles the relevant information about the most common primary CNS neoplasms of cats available in the veterinary literature, aiming to serve as a converging source of information for the topic.
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Intracranial Granular Cell Tumours in Three Dogs: Atypical Magnetic Resonance Imaging Features and Immunohistochemical Study. Vet Sci 2023; 10:vetsci10020134. [PMID: 36851438 PMCID: PMC9962801 DOI: 10.3390/vetsci10020134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 02/06/2023] [Accepted: 02/07/2023] [Indexed: 02/11/2023] Open
Abstract
Intracranial granular cell tumours (GCT) are uncommon neoplasms of uncertain cellular origin that are rarely reported in dogs. This case series describes three aged dogs that presented with neurological signs in which magnetic resonance (MR) imaging revealed plaquelike extra-axial lesions that were hypointense on T2-weighted (T2w) images. The surgical biopsy of the lesions and necropsies were followed by histochemical characterisation with periodic acid-Schiff (PAS) staining and immunohistochemistry with ubiquitin, S-100, and SOX-10 to elucidate the cellular origin. The immunohistochemical study indicated that these intracranial GCTs were not of Schwann cell origin. In conclusion, GCTs should be considered a differential diagnosis of intracranial, extra-axial hypointense brain lesions on T2w MR images.
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5
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Ororbia A, Sanz A, Novellas R, Pastor J, Pumarola M, Fresno L, Espada Y. Diagnostic imaging and pathological findings of an abdominal mesenteric granular cell tumour in a dog. Vet Med Sci 2021; 7:1514-1517. [PMID: 34021730 PMCID: PMC8464256 DOI: 10.1002/vms3.543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 03/10/2021] [Accepted: 05/03/2021] [Indexed: 11/21/2022] Open
Abstract
A 12-year-old mixed-breed dog was presented for a follow-up examination after ablation of an auricular mast cell tumour. An abdominal ultrasound and computed tomography were performed and an irregular, ill-defined and partially mineralised lesion was observed around the caudal duodenal flexure without evidence of metastasis. The cytologic examination was highly suggestive of a granular cell tumour. Partial surgical ablation with histological and immunohistochemical examination of the lesion confirmed the diagnosis. According to our review of the literature, this is the first report documenting an abdominal granular cell tumour in a dog.
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Affiliation(s)
- Alejandro Ororbia
- Fundació Hospital Clinic VeterinariUniversitat Autònoma de BarcelonaBarcelonaSpain
| | - Alba Sanz
- Departamento de medicina y cirugía animalUniversitat Autònoma de BarcelonaBarcelonaSpain
| | - Rosa Novellas
- Fundació Hospital Clinic VeterinariUniversitat Autònoma de BarcelonaBarcelonaSpain
- Departamento de medicina y cirugía animalUniversitat Autònoma de BarcelonaBarcelonaSpain
| | - Josep Pastor
- Fundació Hospital Clinic VeterinariUniversitat Autònoma de BarcelonaBarcelonaSpain
- Departamento de medicina y cirugía animalUniversitat Autònoma de BarcelonaBarcelonaSpain
| | - Marti Pumarola
- Departamento de medicina y cirugía animalUniversitat Autònoma de BarcelonaBarcelonaSpain
- Unit of Murine and Comparative Pathology (UPMiC) and Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER‐BBN)BarcelonaSpain
| | - Laura Fresno
- Departamento de medicina y cirugía animalUniversitat Autònoma de BarcelonaBarcelonaSpain
| | - Yvonne Espada
- Fundació Hospital Clinic VeterinariUniversitat Autònoma de BarcelonaBarcelonaSpain
- Departamento de medicina y cirugía animalUniversitat Autònoma de BarcelonaBarcelonaSpain
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6
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Davis KL, Cheng L, Ramos-Vara J, Sánchez MD, Wilkes RP, Sola MF. Malakoplakia in the Urinary Bladder of 4 Puppies. Vet Pathol 2021; 58:699-704. [PMID: 33888013 PMCID: PMC9949591 DOI: 10.1177/03009858211009779] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Malakoplakia in humans most often affects the urinary bladder and is characterized by inflammation with von Hansemann-type macrophages, with or without Michaelis-Gutmann bodies, and is frequently associated with Escherichia coli infection. We describe the microscopic features of malakoplakia in the urinary bladder of 4 puppies. In all cases, the lamina propria of the urinary bladder was markedly expanded by sheets of large, round to polygonal macrophages with intracytoplasmic, periodic acid-Schiff-positive granules and granular inclusions, and rare Prussian blue-positive inclusions. Macrophages were positive for CD18 and Iba1. In 2 cases, Michaelis-Gutmann bodies were detected with hematoxylin and eosin stain and were best demonstrated with von Kossa stain. E. coli infection was confirmed in 2 cases with bacterial culture or polymerase chain reaction (PCR) and sequencing of the bacterial 16S ribosomal RNA gene. Transmission electron microscopy of one case demonstrated macrophages with abundant lysosomes, phagolysosomes, and rod-shaped bacteria. Microscopic features were similar to human cases of malakoplakia. In dogs, the light microscopic characteristics of malakoplakia closely resemble granular cell tumors and histiocytic ulcerative colitis.
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Affiliation(s)
- Katelin L. Davis
- Purdue University, West Lafayette, IN, USA,National Cancer Institute, Bethesda, MD, USA
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Rodrigues FRN, da Silva Freire JM, Fidelis LDAP, Pereira AABG, de Sousa DER, Wilson TM, Soto-Blanco B, de Castro MB. Paraganglioma of the Tongue in a Chow Chow Dog: A Comparison With the Human Counterpart and Literature Review. Front Vet Sci 2020; 7:422. [PMID: 32851012 PMCID: PMC7396616 DOI: 10.3389/fvets.2020.00422] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 06/12/2020] [Indexed: 01/20/2023] Open
Abstract
Over the last 20 years, substantial knowledge has been developed in Veterinary oncology, and tumors previously reported only in humans have been identified in animals. Primary paragangliomas of the tongue are extremely rare tumors in human beings and have never been reported in animals. A Chow Chow dog showed an ulcerated nodule at the lingual body, deeply infiltrated, which extended to the base of the tongue. A full clinical and pathological investigation was conducted, and a post-surgical follow-up of 6 months did not detect recurrence. Cytological, histological, and immunohistochemical features are presented and support the diagnosis of lingual paraganglioma. The paraganglioma of the tongue reported in this Chow Chow dog shares many similarities with the human counterpart.
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Affiliation(s)
| | | | | | | | | | - Tais Meziara Wilson
- Veterinary Pathology Laboratory, Campus Darcy Ribeiro, University of Brasília, Brasília, Brazil
| | - Benito Soto-Blanco
- Department of Veterinary Clinics and Surgery, Veterinary College, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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8
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Reifinger M, Dinhopl N, Gumpenberger M, Konecny M, Cigler P. Granular Cell Tumour in a California Kingsnake (Lampropeltis californiae). J Comp Pathol 2020; 175:24-28. [PMID: 32138839 DOI: 10.1016/j.jcpa.2019.11.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 10/15/2019] [Accepted: 11/12/2019] [Indexed: 10/25/2022]
Abstract
A 21-year-old female California kingsnake (Lampropeltis californiae) was presented to the University of Veterinary Medicine, Vienna, Austria, with a space-occupying mass in the caudal abdomen. Following clinical, radiological and sonographical evaluation the mass was removed surgically. Histopathology and transmission electron microscopy confirmed the diagnosis of a granular cell tumour, but immunohistochemical labelling for a range of markers was negative. This lesion is rare in mammals and birds, but has not been reported previously in a reptile.
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Affiliation(s)
| | - N Dinhopl
- Institute of Pathology, Vienna, Austria
| | | | - M Konecny
- Department of Birds and Reptiles, University of Veterinary Medicine, Vienna, Austria
| | - P Cigler
- Department of Birds and Reptiles, University of Veterinary Medicine, Vienna, Austria
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9
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Meningeal Granular Cell Tumour in a Green Tree Python (Morelia viridis). J Comp Pathol 2019; 174:54-57. [PMID: 31955803 DOI: 10.1016/j.jcpa.2019.10.190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 10/16/2019] [Accepted: 10/21/2019] [Indexed: 11/21/2022]
Abstract
Granular cell tumours (GCTs) are uncommon neoplasms mostly reported in man, dogs and horses. The origin of GCT is thought to be Schwann cells, with the associated characteristics of neural crest morphology. Neoplastic cells often demonstrate positive immunoreactivity for S100, LC3, vimentin and p62. They are also periodic acid-Schiff (PAS) positive and diastase resistant. A female green tree python (Morelia viridis) was presented for severe constipation and hyporexia of 4 month's duration and, despite treatment, died the next day. A 4.8 × 3.4 mm intracalvarial GCT was identified, compressing the overlying cerebrum without invasion. Neoplastic cells were immunoreactive to S100 and had brightly eosinophilic cytoplasmic granules that were PAS positive and diastase resistant. Electron microscopy revealed numerous cytoplasmic lysosomes in neoplastic cells. GCTs are reported rarely in non-mammalian species with three reports in birds. This represents the first report of a GCT in a reptile.
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10
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Reineking W, Seehusen F, Lehmbecker A, Wohlsein P. Predominance of Granular Cell Tumours among Testicular Tumours of Rabbits (Oryctolagus cuniculi f. dom.). J Comp Pathol 2019; 173:24-29. [PMID: 31812170 DOI: 10.1016/j.jcpa.2019.09.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 09/17/2019] [Accepted: 09/25/2019] [Indexed: 11/19/2022]
Abstract
Testicular neoplasms are reported rarely in pet and laboratory rabbits (Oryctolagus cuniculi f. dom.), with interstitial cell tumours being the most commonly described testicular neoplasm. In this retrospective study, paraffin wax-embedded testicles with neoplastic changes from 52 rabbits were investigated. Five out of 52 animals exhibited more than one tumour type, resulting in a total of 57 tumours. Granular cell tumours were the most prevalent neoplasm with 36 examples (63%) out of the 57 testicular tumours. Interstitial cell tumours, Sertoli cell tumours and seminomas occurred less frequently. Granular cell tumours of the testis are rare in rabbits. Histological similarities between granular cell and interstitial cell (Leydig cell) tumours in haematoxylin and eosin-stained tissue sections may lead to misdiagnoses. The periodic acid-Schiff reaction or immunohistochemistry for periaxin and S100 protein, as well as ultrastructural analysis, are useful methods to confirm the diagnosis.
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Affiliation(s)
- W Reineking
- Department of Pathology, University of Veterinary Medicine, Hannover, Germany
| | - F Seehusen
- Department of Pathology, University of Veterinary Medicine, Hannover, Germany
| | - A Lehmbecker
- Department of Pathology, University of Veterinary Medicine, Hannover, Germany
| | - P Wohlsein
- Department of Pathology, University of Veterinary Medicine, Hannover, Germany.
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11
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Dimov D, Dikov T, Dimitrova L, Filipov C, Raychev I. First report of canine mammary gland granular cell tumour: case description and review of the literature. BULGARIAN JOURNAL OF VETERINARY MEDICINE 2019. [DOI: 10.15547/bjvm.2111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The case of a 5-year-old intact female Pitbull Terrier with a granular cell tumour (GCT) of the mammary gland is presented. The dog was admitted for surgical removal of a non-painful lump assumed to be a fibroadenoma. Histological and immunohistochemical findings leading to the diagnosis consisted of polygonal tumour cells with well-defined cell borders and granular cytoplasm, staining positively with neuron-specific enolase (NSE) and protein S100 and negatively for cytokeratin AE1-AE3. Some important points in the diagnostic and therapeutic approach to this uncommon neoplasm are discussed. To our best knowledge this is the first case of such tumour in the mammary gland described in the veterinary literature.
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12
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Granular Cell Tumor in a Horse: Multifocal Pulmonary Distribution and Evidence of Autophagy in Tumorigenesis. J Equine Vet Sci 2019; 79:23-29. [PMID: 31405495 DOI: 10.1016/j.jevs.2019.05.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 03/27/2019] [Accepted: 05/09/2019] [Indexed: 11/20/2022]
Abstract
Granular cell tumor (GCT) is a soft tissue neoplasm characterized by abundant intracellular eosinophilic granules. The majority of GCTs are benign, although some display malignant behavior. Furthermore, GCTs may mimic other neoplasms. The clinical course and biology of GCTs are poorly understood. Regarding the histogenesis of GCT, a Schwann cell origin is currently favored in light of immunohistochemical and ultrastructural analyses. However, based on literature data, some of the primitive GCTs show non-neural origin; therefore, the histogenesis of this tumor has remained enigmatic. Granular cell tumors can arise in almost any location of the body and typically present as solitary lesions. This study illustrates equine primary GCT with multifocal pulmonary distribution. The presence of GCT in the respiratory tract becomes a diagnostic challenge on initial presentation. The morphologic details of this case are presented. Immunohistochemical evaluation confirmed the neuronal origin of equine GCT and the relation of intracytoplasmic granules formation to an autophagy phenomenon. Most of the discussion is related to GCT nature to help characterize molecular aspects associated with the biological behavior of this tumor and its heterogeneity.
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Levitin HA, Foss KD, Hague DW, Connolly SL, Vieson M, Wycislo KL, Lezmi S, Lovett MC. The utility of intraoperative impression smear cytology of intracranial granular cell tumors: Three cases. Vet Clin Pathol 2019; 48:282-286. [DOI: 10.1111/vcp.12732] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 10/09/2018] [Accepted: 11/10/2018] [Indexed: 11/28/2022]
Affiliation(s)
- Hilary A. Levitin
- Department of Veterinary Clinical Medicine The University of Illinois Urbana Illinois
| | - Kari D. Foss
- Department of Veterinary Clinical Medicine The University of Illinois Urbana Illinois
| | - Devon W. Hague
- Department of Veterinary Clinical Medicine The University of Illinois Urbana Illinois
| | - Sara L. Connolly
- Department of Veterinary Clinical Medicine The University of Illinois Urbana Illinois
| | - Miranda Vieson
- Department of Veterinary Clinical Medicine The University of Illinois Urbana Illinois
| | | | - Stephan Lezmi
- Department of Neuroscience Ipsen Pharmaceutical Paris France
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14
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Webb JK, Reavill DR, Garner MM, Kiupel M, Graham JE. Characterization of Testicular Granular Cell Tumors in Domestic Rabbits (Oryctolagus Cuniculus). J Exot Pet Med 2019. [DOI: 10.1053/j.jepm.2018.08.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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15
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Valentini A, Canal S, Mandara MT, Balducci F, Bernardini M. Intradural extramedullary granular cell tumour in a cat. J Small Anim Pract 2018; 61:259-262. [PMID: 29745421 DOI: 10.1111/jsap.12854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 11/24/2017] [Accepted: 01/08/2018] [Indexed: 11/27/2022]
Abstract
A 7-year-old domestic shorthair cat was evaluated for progressive paraparesis, inability to jump, a paralysed tail and inability to void the bladder. Neurologic examination was consistent with a L4-S3 localisation. Survey radiographs of the lumbar vertebral column revealed L4-L7 vertebral body remodelling. A pre-contrast T1-weighted hyperintense, diffusely enhancing intradural lesion extending from L4 to S1 vertebral bodies was detected by MRI. Large, mesenchymal, round-to-polygonal cells arranged in nests or sheets were found on histologic examination at post mortem. These cells were characterised by abundant intracytoplasmic PAS-positive, diastase-resistant granules and positive immunoexpression of vimentin, S-100, neuron-specific enolase and desmin. This is the first report of a spinal granular cell tumour in a cat.
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Affiliation(s)
- A Valentini
- Department of Animal Medicine, Production and Health, University of Padova, 35020 Legnaro, Italy
| | - S Canal
- Neurology Unit, Portoni Rossi Veterinary Hospital, 40069 Zola Predosa, Italy
| | - M T Mandara
- Department of Veterinary Medicine, University of Perugia, 06126 Perugia, Italy
| | - F Balducci
- Neurology Unit, Portoni Rossi Veterinary Hospital, 40069 Zola Predosa, Italy
| | - M Bernardini
- Department of Animal Medicine, Production and Health, University of Padova, 35020 Legnaro, Italy.,Neurology Unit, Portoni Rossi Veterinary Hospital, 40069 Zola Predosa, Italy
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Nagahara R, Kimura M, Itahashi M, Sugahara G, Kawashima M, Murayama H, Yoshida T, Shibutani M. Canine mammary minute oncocytomas with neuroendocrine differentiation associated with multifocal acinar cell oncocytic metaplasia. J Vet Diagn Invest 2016; 28:722-728. [PMID: 27698175 DOI: 10.1177/1040638716664381] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Two solitary and minute tumors of 1 and 1.5 mm diameter were identified by microscopy in the left fourth mammary gland of a 13-year-old female Labrador Retriever dog, in addition to multiple mammary gland tumors. The former tumors were well circumscribed and were composed of small-to-large polyhedral neoplastic oncocytes with finely granular eosinophilic cytoplasm, and were arranged in solid nests separated by fine fibrovascular septa. Scattered lumina of variable sizes containing eosinophilic secretory material were evident. Cellular atypia was minimal, and no mitotic figures were visible. One tumor had several oncocytic cellular foci revealing cellular transition, with perivascular pseudorosettes consisting of columnar epithelial cells surrounding the fine vasculature. Scattered foci of mammary acinar cell hyperplasia showing oncocytic metaplasia were also observed. Immunohistochemically, the cytoplasm of neoplastic cells of the 2 microtumors showed diffuse immunoreactivity to anti-cytokeratin antibody AE1/AE3, and finely granular immunoreactivity for 60-kDa heat shock protein, mitochondrial membrane ATP synthase complex V beta subunit, and chromogranin A. One tumor also had oncocytic cellular foci forming perivascular pseudorosettes showing cellular membrane immunoreactivity for neural cell adhesion molecule. The tumors were negative for smooth muscle actin, neuron-specific enolase, vimentin, desmin, S100, and synaptophysin. Ultrastructural observation confirmed the abundant mitochondria in the cytoplasm of both neoplastic and hyperplastic cells, the former cells also having neuroendocrine granule-like electron-dense bodies. From these results, our case was diagnosed with mammary oncocytomas accompanied by neuroendocrine differentiation. Scattered foci of mammary oncocytosis might be related to the multicentric occurrence of these oncocytomas.
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Affiliation(s)
- Rei Nagahara
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, Tokyo, Japan (Nagahara, Kimura, Itahashi, Kawashima, Murayama, Yoshida, Shibutani)Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, Kanagawa, Japan (Sugahara)
| | - Masayuki Kimura
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, Tokyo, Japan (Nagahara, Kimura, Itahashi, Kawashima, Murayama, Yoshida, Shibutani)Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, Kanagawa, Japan (Sugahara)
| | - Megu Itahashi
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, Tokyo, Japan (Nagahara, Kimura, Itahashi, Kawashima, Murayama, Yoshida, Shibutani)Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, Kanagawa, Japan (Sugahara)
| | - Go Sugahara
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, Tokyo, Japan (Nagahara, Kimura, Itahashi, Kawashima, Murayama, Yoshida, Shibutani)Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, Kanagawa, Japan (Sugahara)
| | - Masashi Kawashima
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, Tokyo, Japan (Nagahara, Kimura, Itahashi, Kawashima, Murayama, Yoshida, Shibutani)Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, Kanagawa, Japan (Sugahara)
| | - Hirotada Murayama
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, Tokyo, Japan (Nagahara, Kimura, Itahashi, Kawashima, Murayama, Yoshida, Shibutani)Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, Kanagawa, Japan (Sugahara)
| | - Toshinori Yoshida
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, Tokyo, Japan (Nagahara, Kimura, Itahashi, Kawashima, Murayama, Yoshida, Shibutani)Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, Kanagawa, Japan (Sugahara)
| | - Makoto Shibutani
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, Tokyo, Japan (Nagahara, Kimura, Itahashi, Kawashima, Murayama, Yoshida, Shibutani)Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, Kanagawa, Japan (Sugahara)
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17
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Barnhart KF, Edwards JF, Storts RW. Symptomatic Granular Cell Tumor Involving the Pituitary Gland in a Dog: A Case Report and Review of the Literature. Vet Pathol 2016; 38:332-6. [PMID: 11355666 DOI: 10.1354/vp.38-3-332] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
A granular cell tumor involving the pituitary gland, optic chiasm and ventral pyriform lobes was discovered in a 12-year-old Labrador Retriever. Clinical signs included acute blindness, seizures, ataxia, weakness, and behavioral changes. The diagnosis was established by histopathologic and ultrastructural examination of neoplastic tissues collected at necropsy. Granular cell tumors involving the central nervous system are well documented in humans but rarely have been described in dogs. The location of the neoplasm and the clinical symptoms seen in this dog closely parallel those of a rare syndrome in humans commonly described as symptomatic parasellar or pituitary granular cell tumors. The cell of origin for these tumors is still highly debated, and attempts to characterize human granular cell tumors through immunohistochemistry have produced conflicting results. An immunohistochemical profile of this neoplasm revealed focal positive staining for vimentin with a lack of staining for neuron-specific enolase, glial fibrillary acidic protein, S-100, and synaptophysin. All neoplastic cells were strongly positive with the periodic acid-Schiff reaction.
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Affiliation(s)
- K F Barnhart
- Department of Pathobiology, College of Veterinary Medicine, Texas A&M University, College Station 77833-4457, USA
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Nolte T, Brander-Weber P, Dangler C, Deschl U, Elwell MR, Greaves P, Hailey R, Leach MW, Pandiri AR, Rogers A, Shackelford CC, Spencer A, Tanaka T, Ward JM. Nonproliferative and Proliferative Lesions of the Gastrointestinal Tract, Pancreas and Salivary Glands of the Rat and Mouse. J Toxicol Pathol 2016; 29:1S-125S. [PMID: 26973378 PMCID: PMC4765498 DOI: 10.1293/tox.29.1s] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The INHAND (International Harmonization of Nomenclature and Diagnostic Criteria for Lesions in Rats and Mice) project is a joint initiative of the Societies of Toxicologic Pathology from Europe (ESTP), Great Britain (BSTP), Japan (JSTP), and North America (STP) to develop an internationally accepted nomenclature and diagnostic criteria for nonproliferative and proliferative lesions in laboratory animals. The purpose of this publication is to provide a standardized nomenclature and diagnostic criteria for classifying lesions in the digestive system including the salivary glands and the exocrine pancreas of laboratory rats and mice. Most lesions are illustrated by color photomicrographs. The standardized nomenclature, the diagnostic criteria, and the photomicrographs are also available electronically on the Internet (http://www.goreni.org/). Sources of material included histopathology databases from government, academia, and industrial laboratories throughout the world. Content includes spontaneous and age related lesions as well as lesions induced by exposure to test items. Relevant infectious and parasitic lesions are included as well. A widely accepted and utilized international harmonization of nomenclature and diagnostic criteria for the digestive system will decrease misunderstandings among regulatory and scientific research organizations in different countries and provide a common language to increase and enrich international exchanges of information among toxicologists and pathologists.
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Affiliation(s)
- Thomas Nolte
- Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach an
der Riss, 88397, Germany
- Chairman of the Digestive Tract INHAND Committee
| | - Patricia Brander-Weber
- Novartis Institutes for BioMedical Research, Novartis Pharma
AG, CH-4002 Basel, Switzerland
| | - Charles Dangler
- Jackson Laboratory, Bar Harbor, Maine 04609, USA.
Present: Sanofi5 The Mountain Road, Framingham, Massachusetts 01740,
USA
| | - Ulrich Deschl
- Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach an
der Riss, 88397, Germany
| | - Michael R. Elwell
- Covance Laboratories, Inc. 14500 Avion Parkway, Ste 125,
Chantilly, Virginia 20151, USA
| | - Peter Greaves
- University of Leicester, Department of Cancer Studies and
Molecular Medicine, Robert Kilpatrick Clinical Science Building, Leicester Royal
Infirmary, Leicester LE2 7LX, United Kingdom
| | - Richard Hailey
- GlaxoSmithKline PO Box 14164 Durham, North Carolina 27709,
USA
| | | | - Arun R. Pandiri
- Cellular and Molecular Pathology Branch, National Toxicology
Program, National Institute of Environmental Health Sciences, Research Triangle Park,
North Carolina 27709, USA
- Experimental Pathology Laboratories, Inc. PO Box 12766,
Research Triangle Park, North Carolina 27709, USA
| | - Arlin Rogers
- Tufts University, Department of Biomedical Sciences, 274
Tremont Street, Massachusetts 02111, USA
| | - Cynthia C. Shackelford
- Cellular and Molecular Pathology Branch, National Toxicology
Program, National Institute of Environmental Health Sciences, Research Triangle Park,
North Carolina 27709, USA
| | - Andrew Spencer
- Covance Laboratories Ltd, Alnwick Research Centre,
Willowburn Avenue, Alnwick, Northumberland NE66 2JH United Kingdom
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Katou-Ichikawa C, Izawa T, Sasai H, Kuwamura M, Yamate J. Multiple Histiocytic Foam Cell Nodules in the Tongue of Miniature Dachshund Dogs. Vet Pathol 2015; 53:625-8. [PMID: 26173452 DOI: 10.1177/0300985815594850] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Miniature dachshund dogs are a common breed in Japan and are known to be predisposed to granulomatous diseases. Here we report the pathologic features of multiple lingual nodules in 7 miniature dachshunds. Seven dogs had multiple nodules of variable sizes mainly on the ventral and lateral surface of the tongue. In addition, 1 dog also had masses on the left oral mucosa. Three cases had recurrence after surgical resection. Histologically, the lingual nodules were composed of aggregates of foam cells with clear vacuolated cytoplasm that were negative for oil red O, PAS, and alcian blue. They stained positively for CD204 (macrophage scavenger receptor) and MHC class II and negatively for Iba-1, E-cadherin, adipophilin, cytokeratins, S-100, and nestin. These findings indicate that the multiple lingual nodules in miniature dachshunds are an unusual, unique lesion consisting of macrophage-derived foam cells, which does not correspond to canine lingual diseases reported to date.
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Affiliation(s)
- C Katou-Ichikawa
- Department of Veterinary Science, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - T Izawa
- Department of Veterinary Science, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - H Sasai
- Kitasuma Animal Hospital, Kobe City, Hyogo, Japan
| | - M Kuwamura
- Department of Veterinary Science, Osaka Prefecture University, Izumisano, Osaka, Japan
| | - J Yamate
- Department of Veterinary Science, Osaka Prefecture University, Izumisano, Osaka, Japan
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Suzuki S, Uchida K, Harada T, Nibe K, Yamashita M, Ono K, Nakayama H. The Origin and Role of Autophagy in the Formation of Cytoplasmic Granules in Canine Lingual Granular Cell Tumors. Vet Pathol 2014; 52:456-64. [DOI: 10.1177/0300985814546051] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Granular cell tumors (GCTs) are histologically characterized by polygonal neoplastic cells with abundant eosinophilic cytoplasmic granules. In humans, these cells are considered to be derived from Schwann cells, and the cytoplasmic granules are assumed to be autophagosomes or autophagolysosomes. However, the origin and nature of the cytoplasmic granules in canine GCTs have not been well characterized. The present study examined 9 canine lingual GCTs using immunohistochemistry, transmission electron microscopy (TEM), and cell culture and xenotransplantation experiments. In some cases, the tumor cells expressed S100, CD133, and desmin. The cytoplasmic granules were positive for LC3, p62, NBR1, and ubiquitin. TEM revealed autophagosome-like structures in the cytoplasm of the granule-containing cells. The cultured GCT cells were round to spindle shaped and expressed S100, nestin, Melan-A, CD133, LC3, p62, NBR1, and ubiquitin, suggesting that they were of neural crest origin, redifferentiated into melanocytes, and exhibited upregulated autophagy. The xenotransplanted tumors consisted of spindle to polygonal cells. Only a few cells contained cytoplasmic granules, and some had melanin pigments in their cytoplasm. The xenotransplanted cells expressed S100, nestin, Melan-A, and CD133. P62 and ubiquitin were detected, regardless of the presence or absence of cytoplasmic granules, while LC3 and NBR1 were detected only in the neoplastic cells containing cytoplasmic granules. These findings suggest that some xenotransplanted cells redifferentiated into melanocytes and that autophagy was upregulated in the cytoplasmic granule-containing cells. In conclusion, canine lingual GCTs originate from the neural crest and develop cytoplasmic granules via autophagy. In addition, the microenvironment of GCT cells affects their morphology.
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Affiliation(s)
- S. Suzuki
- Department of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, the University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - K. Uchida
- Department of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, the University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - T. Harada
- Department of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, the University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - K. Nibe
- Japan Animal Referral Medical Center, Takatsu-ku, Kawasaki-shi, Kanagawa, Japan
| | - M. Yamashita
- Japan Animal Referral Medical Center, Takatsu-ku, Kawasaki-shi, Kanagawa, Japan
| | - K. Ono
- Japan Animal Referral Medical Center, Takatsu-ku, Kawasaki-shi, Kanagawa, Japan
| | - H. Nakayama
- Department of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, the University of Tokyo, Bunkyo-ku, Tokyo, Japan
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21
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Ravi M, Schobert CS, Kiupel M, Dubielzig RR. Clinical, morphologic, and immunohistochemical features of canine orbital hibernomas. Vet Pathol 2013; 51:563-8. [PMID: 23794150 DOI: 10.1177/0300985813493913] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Hibernomas are uncommon benign tumors of brown fat that occur in humans and various animal species. They have not been observed in the orbit of dogs, humans, or other animals. Here we report clinical, light and electron microscopic, and immunohistochemical features of a series of 7 hibernomas arising in the orbital region of dogs. These neoplasms occurred in adult dogs with no breed predilection. The mean age of the affected dogs was 10.4 years (range, 8-13 years). All neoplasms presented as soft lobular masses composed of predominantly round or polygonal neoplastic cells with granular eosinophilic and vacuolated cytoplasm resembling adipocytes. The cytoplasm contained large numbers of pleomorphic mitochondria with dense matrices and indistinct cristae. Immunohistochemical evaluation confirmed positive labeling of neoplastic cells from all cases with uncoupling protein 1 (UCP-1) consistent with brown fat differentiation. Interestingly, rare neoplastic cells also expressed myogenin and myoD, possibly suggesting a common progenitor cell for neoplastic brown adipose and skeletal muscle cells.
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Affiliation(s)
- M Ravi
- Alberta Agriculture and Rural Development, OS Longman Bldg, 6909 112 St, Edmonton, Alberta T6H 4P2, Canada.
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22
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Anwer CC, Vernau KM, Higgins RJ, Dickinson PJ, Sturges BK, LeCouteur RA, Bentley RT, Wisner ER. MAGNETIC RESONANCE IMAGING FEATURES OF INTRACRANIAL GRANULAR CELL TUMORS IN SIX DOGS. Vet Radiol Ultrasound 2013; 54:271-7. [DOI: 10.1111/vru.12027] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2012] [Accepted: 02/07/2013] [Indexed: 12/01/2022] Open
Affiliation(s)
- Cona C. Anwer
- From the Department of Surgical and Radiological Sciences
| | | | - Robert J. Higgins
- Department of Pathology; Microbiology, and Immunology; University of California - Davis; Davis; CA
| | | | | | | | | | - Erik R. Wisner
- From the Department of Surgical and Radiological Sciences
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23
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Spoor MS, Kim DY, Kanazono S, Wininger FA, Whitney MS. What is your diagnosis? Impression smears of a cerebral mass from a dog. Vet Clin Pathol 2013; 42:240-1. [PMID: 23432620 DOI: 10.1111/vcp.12026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Melanie S Spoor
- Department of Pathobiology, Veterinary Medical Diagnostic Laboratory, University of Missouri, Columbia, MO 65211, USA.
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Hernández V, Carrera E, Méndez A, Morales JC, Morales E, Sánchez FD. Histopathologic, immunohistochemical and ultrastructural features of a granular cell tumour in an Australian parakeet (Melopsittacus undulatus). Avian Pathol 2012; 41:437-40. [DOI: 10.1080/03079457.2012.711463] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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26
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Golbar HM, Izawa T, Kuwamura M, Okamura K, Fujita D, Tagami Y, Sasai H, Yamate J. A collision tumor consisting of granular cell tumor and adenocarcinoma in the uterus of an aged djungarian hamster. J Toxicol Pathol 2012; 24:233-7. [PMID: 22319236 PMCID: PMC3266359 DOI: 10.1293/tox.24.233] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2011] [Accepted: 07/13/2011] [Indexed: 11/19/2022] Open
Abstract
A neoplastic nodular lesion consisting of an admixture of granular cell tumor and
adenocarcinoma was found in the uterus of a 26-month-old Djungarian hamster. Neoplastic
cells of the uterine adenocarcinoma showed an epithelial nature in their growth patterns
and by cytokeratin-immunopositive reaction, exhibiting nuclear pleomorphism. The granular
cells had an abundant amount of fine granular eosinophilic cytoplasm and eccentric or
central nuclei with no nuclear atypia; the granular structures were positive for periodic
acid-Schiff with diastase resistance and were confirmed as lysosomes/autophagosomes by
electron microscopy; immunohistochemically, the cells reacted to desmin, vimentin and
α-smooth muscle actin and negatively for neurogenic, histiocyte/macrophage or epithelial
markers, indicating smooth muscle origin. Because these tumors were generated from
different cell origins, a diagnosis of collision tumor was made.
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Affiliation(s)
- Hossain M. Golbar
- Laboratory of Veterinary Pathology, Division of Veterinary
Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University,
1-58 Rinku-ourai-kita, Izumisano City, Osaka 598-8531, Japan
| | - Takeshi Izawa
- Laboratory of Veterinary Pathology, Division of Veterinary
Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University,
1-58 Rinku-ourai-kita, Izumisano City, Osaka 598-8531, Japan
| | - Mitsuru Kuwamura
- Laboratory of Veterinary Pathology, Division of Veterinary
Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University,
1-58 Rinku-ourai-kita, Izumisano City, Osaka 598-8531, Japan
| | | | - Daisuke Fujita
- Kitasuma Animal Hospital, Kobe City, Hyogo 654-0131,
Japan
| | - Yukari Tagami
- Kitasuma Animal Hospital, Kobe City, Hyogo 654-0131,
Japan
| | - Hiroshi Sasai
- Kitasuma Animal Hospital, Kobe City, Hyogo 654-0131,
Japan
| | - Jyoji Yamate
- Laboratory of Veterinary Pathology, Division of Veterinary
Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University,
1-58 Rinku-ourai-kita, Izumisano City, Osaka 598-8531, Japan
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27
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Cornegliani L, Gracis M, Ferro S, Vercelli A, Roccabianca P. Sublingual reactive histiocytosis in a dog. J Vet Dent 2011; 28:164-70. [PMID: 22206142 DOI: 10.1177/089875641102800303] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Lingual lesions are relatively uncommon in dogs and are mostly represented by neoplasms and glossitis secondary to trauma or infections. Reactive histiocytosis is an uncommon, poorly understood, reactive disorder characterized by proliferation of activated, interstitial, dendritic, antigen-presenting cells associated with lymphocytes and neutrophils with a specific angiocentric orientation and occasional angioinvasion and angiodestruction. Clinically, the disease has a waxing and waning behavior with possible response to treatment and regression, or progression to multiple lesions and internal organ involvement. This case report describes an unusual sublingual presentation of reactive histiocytosis in a Miniature Pinscher dog. The diagnosis was obtained by clinical and histopathological exclusion of other causes, detection of the characteristic microscopic growth pattern, and by immunocytochemistry. Histiocytic cells were vimentin, CD18, CD11c, and CD1c positive consistent with a dendritic cell origin. Anti-BCG stain (Bacillus Calmette and Guerin) was negative for etiological agents. The dog was treated with oral administration of tetracycline and niacinamide during an 8-month period. There was no indication of recurrence of the sublingual mass 2-years following treatment.
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28
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Mishra S, Kent M, Haley A, Platt S, Sakamoto K. Atypical meningeal granular cell tumor in a dog. J Vet Diagn Invest 2011; 24:192-7. [DOI: 10.1177/1040638711425942] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
A 10-year-old, female spayed Chihuahua dog was presented to the Veterinary Teaching Hospital at the University of Georgia for evaluation of seizures, abnormal mentation, and cervical pain of 2 months duration. On magnetic resonance imaging, there was generalized thickening of the meninges overlying the left cerebral hemisphere and along the falx cerebri. Despite symptomatic treatment, the dog remained neurologically affected. Consequently, the owners elected euthanasia. On gross examination, the meninges covering the left cerebral hemisphere were severely thickened and firmly adhered to the calvaria. On transverse section, the white matter of the left cerebral hemisphere was swollen, enlarged, and extended across the midline with resultant compression of the right cerebral hemisphere. Cytologic evaluation of an impression smear of the thickened meninges showed numerous large, spindloid to polygonal cells with abundant, amphophilic, vacuolated cytoplasm, present either in clusters or in individual cells. Histopathologic evaluation of the meninges revealed a poorly circumscribed and infiltrative, moderately cellular neoplasm, composed of vacuolated, spindloid to polygonal cells with marked anisocytosis and anisokaryosis, arranged in sheets, and occasionally separated by thick bands of connective tissue. Immunohistochemistry for vimentin revealed diffuse cytoplasmic staining of the neoplastic cells. Although the periodic acid–Schiff reaction was negative, ultrastructural findings showed numerous vesicles that were empty or that contained membranous or electron-dense material. Based on gross, microscopic, immunohistochemical, and ultrastructural changes, the meningeal neoplasm was diagnosed as an atypical granular cell tumor.
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Affiliation(s)
- Sasmita Mishra
- Departments of Pathology (Mishra, Sakamoto), College of Veterinary Medicine, University of Georgia, Athens, GA
- Small Animal Medicine and Surgery (Kent, Haley, Platt), College of Veterinary Medicine, University of Georgia, Athens, GA
| | - Marc Kent
- Departments of Pathology (Mishra, Sakamoto), College of Veterinary Medicine, University of Georgia, Athens, GA
- Small Animal Medicine and Surgery (Kent, Haley, Platt), College of Veterinary Medicine, University of Georgia, Athens, GA
| | - Allison Haley
- Departments of Pathology (Mishra, Sakamoto), College of Veterinary Medicine, University of Georgia, Athens, GA
- Small Animal Medicine and Surgery (Kent, Haley, Platt), College of Veterinary Medicine, University of Georgia, Athens, GA
| | - Simon Platt
- Departments of Pathology (Mishra, Sakamoto), College of Veterinary Medicine, University of Georgia, Athens, GA
- Small Animal Medicine and Surgery (Kent, Haley, Platt), College of Veterinary Medicine, University of Georgia, Athens, GA
| | - Kaori Sakamoto
- Departments of Pathology (Mishra, Sakamoto), College of Veterinary Medicine, University of Georgia, Athens, GA
- Small Animal Medicine and Surgery (Kent, Haley, Platt), College of Veterinary Medicine, University of Georgia, Athens, GA
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Piseddu E, De Lorenzi D, Freeman K, Masserdotti C. Cytologic, histologic, and immunohistochemical features of lingual liposarcoma in a dog. Vet Clin Pathol 2011; 40:393-7. [DOI: 10.1111/j.1939-165x.2011.00342.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Bound NJ, Priestnall SL, Cariou MP. Lingual and renal lymphoma in a cat. J Feline Med Surg 2011; 13:272-5. [PMID: 21208818 PMCID: PMC10832807 DOI: 10.1016/j.jfms.2010.11.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2010] [Revised: 11/16/2010] [Accepted: 11/18/2010] [Indexed: 10/18/2022]
Abstract
A domestic shorthair cat presented with a progressive history of polydipsia, lingual swelling and ulceration. The tongue was firm and grossly enlarged with associated regional lymphadenopathy. Surgical biopsies revealed lymphoma of the tongue. Following the procedure, the cat developed respiratory distress and was subsequently euthanased. Necropsy confirmed the diagnosis of lingual lymphoma and also identified lymphoma within the left kidney. This is the first report of lymphoma within the feline tongue in the literature.
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Affiliation(s)
- Nicola J Bound
- Royal Veterinary College, North Mymms, Hertfordshire, UK.
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31
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Rao D, Rylander H, Drees R, Schwarz T, Steinberg H. Granular Cell Tumor in a Lumbar Spinal Nerve of a Dog. J Vet Diagn Invest 2010; 22:638-42. [DOI: 10.1177/104063871002200425] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A 2-year-old Great Dane dog with a 2.5-week history of progressive paraparesis was presented to the Veterinary Medical Teaching Hospital at the University of Wisconsin-Madison. Neurologic examination revealed nonambulatory paraparesis with reduced to absent withdrawal hind-limb reflexes and lumbar pain. Magnetic resonance imaging and gross pathology confirmed a larger regional lumbar mass and a second smaller extradural mass within the spinal canal. The left lumbar mass was associated with extensive hemorrhage; dissection showed a dark-red, soft, well-circumscribed mass measuring 2 cm × 1.5 cm × 0.5 cm within the left fourth lumbar spinal nerve. Histopathological evaluation with immunohistochemistry revealed sheets of round to polygonal cells with diffuse granular cytoplasm demonstrating diastase-resistant periodic acid–Schiff reactivity and positive immunoexpression of S100 and neuron-specific enolase. The smaller extradural mass within the spinal canal exhibited similar morphology. Based on gross, histological, and immunohistochemical evidence, the masses were diagnosed as granular cell tumor.
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Affiliation(s)
- Deepa Rao
- Veterinary Medical Teaching Hospital, University of Wisconsin, Madison, WI
- Cellular and Molecular Pathology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC
| | - Helena Rylander
- Veterinary Medical Teaching Hospital, University of Wisconsin, Madison, WI
| | - Randi Drees
- Veterinary Medical Teaching Hospital, University of Wisconsin, Madison, WI
| | - Tobias Schwarz
- Veterinary Medical Teaching Hospital, University of Wisconsin, Madison, WI
- University of Edinburgh, Royal School of Veterinary Studies, Roslin, UK
| | - Howard Steinberg
- Veterinary Medical Teaching Hospital, University of Wisconsin, Madison, WI
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Quist CF, Latimer KS, Goldade SL, Rivera A, Dein FJ. Granular cell tumour in an endangered Puerto Rican Amazon parrot (Amazon vittata ). Avian Pathol 2010; 28:345-8. [DOI: 10.1080/03079459994597] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Veit AC, Painter JT, Miller RA, Hardisty JF, Dixon D. Characterization of uterine granular cell tumors in B6C3F1 mice: a histomorphologic, immunohistochemical, and ultrastructural study. Vet Pathol 2008; 45:654-62. [PMID: 18725470 DOI: 10.1354/vp.45-5-654] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The granular cell tumor is most often a benign neoplasm of uncertain origin. Four uterine granular cell tumors in control and treated female B6C3F1 mice were identified in chronic studies at the National Toxicology Program. Two tumors occurred in untreated control animals and 2 in treated animals receiving different compounds. Tissue sections were evaluated histologically and stained with hematoxylin and eosin, periodic acid-Schiff with diastase resistance, Masson's trichrome, toluidine blue, phosphotungstic acid-hematoxylin, and stained immunohistochemically with a panel of antibodies to muscle (desmin, alpha smooth muscle actin), neural (S-100, neuron specific enolase), epithelial (wide-spectrum cytokeratin), and macrophage (F4/80) markers. The main histomorphologic feature of tumor cells was the presence of abundant cytoplasmic eosinophilic granules that stained positive for periodic acid-Schiff with diastase resistance. Tumors varied in appearance and were comprised of sheets and nests of round to polygonal cells with distinct borders. Nuclei were hyperchromatic, pleomorphic, and centrally to eccentrically located and often contained single nucleoli. Occasional multinucleated giant cells were observed. Tumors were pale pink and homogeneous with trichrome stain and negative with toluidine blue. Three tumors had positive to weakly positive immunoreactivity for desmin, and 1 was positive for alpha smooth muscle actin. Expression of S-100, wide-spectrum cytokeratin, and neuron-specific enolase was negative for all tumors. Ultrastructurally, prominent electron-dense cytoplasmic granules were abundant and contained secondary lysosomes with heterogeneous lysosomal contents. The characteristics of these uterine granular cell tumors were suggestive of a myogenic origin.
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Affiliation(s)
- A C Veit
- Cellular and Molecular Pathology Branch, National Institute of Environmental Health Sciences, PO Box 12233, MD C2-09, 111 T.W. Alexander Drive, Bldg. 101, Research Triangle Park, NC 27709 (USA)
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Syrcle JA, Bonczynski JJ, Monette S, Bergman PJ. Retrospective Evaluation of Lingual Tumors in 42 Dogs: 1999–2005. J Am Anim Hosp Assoc 2008; 44:308-19. [DOI: 10.5326/0440308] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
In this retrospective study of 42 cases of lingual tumors in dogs, 27 (64%) were malignant, and 15 (36%) were benign. Median survival time for dogs with benign tumors was >1607 days, compared to 286 days for malignant tumors. Prognostic factors significantly associated with increased survival included complete histological margins (P=0.036), smaller tumor size (P=0.003), and benign tumor type (P=0.011). Smaller tumors were more likely to be completely resected (P=0.008) and were less likely to recur (P=0.001). Partial or subtotal glossectomies were performed in 13 cases. Short-term morbidity associated with glossectomy included ptyalism and dehiscence. Long-term morbidity included minor changes in eating and drinking habits.
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Affiliation(s)
- Jason A. Syrcle
- Departments of Surgery (Syrcle, Bonczynski), Pathology (Monette), and Oncology (Bergman), The Animal Medical Center, 510 East 62nd Street, New York, New York 10065
- From the
| | - Jennifer J. Bonczynski
- Departments of Surgery (Syrcle, Bonczynski), Pathology (Monette), and Oncology (Bergman), The Animal Medical Center, 510 East 62nd Street, New York, New York 10065
- From the
| | - Sebastien Monette
- Departments of Surgery (Syrcle, Bonczynski), Pathology (Monette), and Oncology (Bergman), The Animal Medical Center, 510 East 62nd Street, New York, New York 10065
- From the
| | - Philip J. Bergman
- Departments of Surgery (Syrcle, Bonczynski), Pathology (Monette), and Oncology (Bergman), The Animal Medical Center, 510 East 62nd Street, New York, New York 10065
- From the
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Takeuchi Y, Ohnishi Y, Matsunaga S, Nakayama H, Uetsuka K. Intracranial meningioma with polygonal granular cell appearance in a Chihuahua. J Vet Med Sci 2008; 70:529-32. [PMID: 18525181 DOI: 10.1292/jvms.70.529] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A menigioma with polygonal granular cell proliferation in an 11-year and 8-month-old male Chihuahua is described. The tumor was observed under the dura matter of the right cerebrum. Microscopically, the tumor consisted of solid growth foci of small- or large- sized polygonal cells, with pale-stained nuclei, prominent nucleoli, and fine granular to foamy eosinophilic cytoplasm. Some of the proliferating cells contained variable amounts of cytoplasmic PAS-positive granules. Immunohistochemical analysis revealed that neoplastic cells were positive for vimentin and S-100 protein. Ultrastructurally, the neoplastic cells contained vesicular structures with a few small round-shaped bodies in the cytoplasm. We diagnosed the case as canine meningioma with granular cell appearance.
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Affiliation(s)
- Yoshinori Takeuchi
- Department of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan.
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Sardon D, Vazquez F, Cabrera P, Alonso M. Choroid Plexus Papilloma of the Fourth Ventricle of the Plexus in a Horse. J Equine Vet Sci 2008. [DOI: 10.1016/j.jevs.2008.07.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Irizarry-Rovira AR, Lennox AM, Ramos-Vara JA. Granular Cell Tumor in the Testis of a Rabbit: Cytologic, Histologic, Immunohistochemical, and Electron Microscopic Characterization. Vet Pathol 2008; 45:73-7. [DOI: 10.1354/vp.45-1-73] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
An adult pet rabbit ( Oryctolagus cuniculus) presented with a progressively enlarging left testicle. Because neoplasia was suspected, the testicle was removed. Pathologic evaluation (exfoliative cytology, histopathology, immunohistochemistry, electron microscopy) indicated that the tumor was an intratesticular granular cell tumor. Granular cell tumor has not been described in rabbits before and has not been described in the testes of animals or postnatal humans. Granular cell tumor should be included as a differential diagnosis of testicular tumors, particularly Leydig cell tumor, because of potential histologic similarities.
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Affiliation(s)
- A. R. Irizarry-Rovira
- Toxicology and Drug Disposition, Lilly Research Laboratories, A Division of Eli Lilly and Company, Greenfield, IN
| | - A. M. Lennox
- Avian and Exotic Animal Clinic of Indianapolis, Indianapolis, IN
| | - J. A. Ramos-Vara
- Department of Comparative Pathobiology, Purdue University, West Lafayette, IN
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38
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Rossi G, Tarantino C, Taccini E, Renzoni G, Magi GE, Bottero E. Granular Cell Tumour Affecting the Left Vocal Cord in a Dog. J Comp Pathol 2007; 136:74-8. [PMID: 17258228 DOI: 10.1016/j.jcpa.2006.10.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2006] [Accepted: 10/05/2006] [Indexed: 10/23/2022]
Abstract
Granular cell tumours (GCTs) have been described in human vocal cords, but not in those of the dog. A single polyp in the left vocal cord, associated with laryngeal oedema and monolateral hyperplasia of the tonsil, was observed endoscopically in a 6-year-old male dog. Cytologically, the mass was characterized by well-defined polygonal cells, with granular cytoplasm and an eccentric nucleus. Histologically, the mass showed sheets of globoid to polygonal cells, filled with numerous diastase-resistant, periodic acid-Schiff-positive granules, and scanty stroma. Ultrastructurally, the granules were represented by heterogeneous lysosomes of variable size, suggesting a diagnosis of GCT. As reported in man, hyperplasia of the laryngeal and tonsillar epithelium and the presence of foci of pearl-like epithelial cells, mimicking invasive squamous cell carcinoma, were observed. Immunohistochemical examination revealed labelling of neoplastic cells for S-100 protein, CD68, collagen IV, and, focally, for glial fibrillary acidic protein, neuron-specific enolase and vimentin. These findings suggested a Schwann cell origin of the GCT.
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Affiliation(s)
- G Rossi
- Department of Animal Science, University of Camerino, Via Circonvallazione 93/95, 62024 Matelica, Italy.
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Abstract
An oncocytoma was diagnosed in the nasal cavity of a 12-year-old Domestic Shorthair cat who presented with periocular swelling and sneezing. Histologic examination from biopsy material revealed monomorphic sheets, anastomosing cords, tubules, and acini composed of large polygonal to oval cells that contained abundant finely granular eosinophilic cytoplasm. No vascular or lymphatic invasions were noted. Histochemical stains revealed positive staining of tumor cells with periodic acid-Schiff (PAS) (before and after diastase digestion) and phosphotungstic acid-hematoxylin. Immunohistochemical evaluation of the tumor cells demonstrated positive staining for cytokeratin and negative staining for vimentin, desmin, S-100, glial fibrillar acidic protein, and neuronal specific enolase. Ultrastructurally, the tumor cells contained large numbers of mitochondria within their cytoplasm, which confirmed a diagnosis of oncocytoma.
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Affiliation(s)
- R W Doughty
- PCS Biology, GE Healthcare Bio-sciences, P.O. Box 4220 Nydalen, NO-0401 Oslo, Norway.
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40
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Dennis MM, Ehrhart N, Duncan CG, Barnes AB, Ehrhart EJ. Frequency of and risk factors associated with lingual lesions in dogs: 1,196 cases (1995-2004). J Am Vet Med Assoc 2006; 228:1533-7. [PMID: 16677121 DOI: 10.2460/javma.228.10.1533] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To categorize histologic lesions affecting the tongue, determine the frequency with which they develop, and identify risk factors associated with their development in dogs. DESIGN Retrospective case series. ANIMALS 1,196 dogs. PROCEDURES Diagnostic reports of lingual biopsy specimens from dogs evaluated from January 1995 to October 2004 were reviewed. RESULTS Neoplasia comprised 54% of lingual lesions. Malignant tumors accounted for 64% of lingual neoplasms and included melanoma, squamous cell carcinoma, hemangiosarcoma, and fibrosarcoma. Large-breed dogs, especially Chow Chows and Chinese Shar-Peis, were at increased risk for melanoma. Females of all breeds and Poodles, Labrador Retrievers, and Samoyeds were more likely to have squamous cell carcinomas. Hemangiosarcomas and fibrosarcomas were commonly diagnosed in Border Collies and Golden Retrievers, respectively. Benign neoplasms included squamous papilloma, plasma cell tumor, and granular cell tumor. Small-breed dogs, especially Cocker Spaniels, were at increased risk for plasma cell tumors. Glossitis accounted for 33% of diagnoses; in most cases, the inciting cause was not apparent. Whereas large-breed dogs were more likely to have lingual neoplasia, small-breed dogs were more likely to have glossitis. Calcinosis circumscripta accounted for 4% of lingual lesions and predominately affected young large-breed dogs. The remaining submissions consisted mostly of various degenerative or wound-associated lesions. CONCLUSIONS AND CLINICAL RELEVANCE The frequency of lingual lesions was not evenly distributed across breeds, sexes, or size classes of dogs. Veterinarians should be aware of the commonly reported lingual lesions in dogs so that prompt diagnosis and appropriate management can be initiated.
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Affiliation(s)
- Michelle M Dennis
- Department of Microbiology, Immunology, and Pathology and Veterinary Diagnostic Laboratory, Animal Population Health Institute, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO 80523-1601, USA
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41
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Pérez V, Vidal E, González N, Benavides J, Ferreras MC, Villagrasa M, Pumarola M. Orbital Meningioma with a Granular Cell Component in a Dog, with Extracranial Metastasis. J Comp Pathol 2005; 133:212-7. [PMID: 16045918 DOI: 10.1016/j.jcpa.2005.02.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2004] [Accepted: 02/10/2005] [Indexed: 11/19/2022]
Abstract
A meningioma with a significant component of granular cells is described in the left ocular orbit of a 5-year-old male Golden retriever dog that presented with exophthalmos. The neoplastic mass surrounded the optic nerve. Microscopically, the tumour was characterized by nests of large, round to polygonal cells, variable in size, with eccentric nuclei and abundant eosinophilic cytoplasm, containing PAS-positive granules. In focal areas, cells were smaller and occasionally formed whorl-like structures. Immunohistochemical analysis revealed that neoplastic cells reacted positively for vimentin and, with less intensity, for neuron specific enolase and S-100, whereas they were negative for glial fibrillary acidic protein and cytokeratins. Metastatic growths, formed by similar cells, were seen in the lung and heart.
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Affiliation(s)
- V Pérez
- Departamento de Patología Animal: Medicina Animal (Anatomía Patológica), Facultad de Veterinaria, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain
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Abstract
Neoplastic diseases are becoming more than a postmortem diagnosis due to the increasing knowledge base and improving quality of avian medicine. The expectation for better health care demands a diagnosis, prognosis, and therapy options. However, the published information regarding prognosis and therapy of specific neoplasms remains limited in avian medicine. With each case report or study that provides this information, there is an improvement in the level of care we can offer our companion avian species. This review will cover some basic information about specific tumor types and will reference the more recent reports in the avian literature. It is not intended to be all encompassing.
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Affiliation(s)
- Drury R Reavill
- Zoo/Exotic Pathology Service 2825 KOVR Drive West Sacramento, CA 95605, USA.
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Fukuoka A, Nakayama H, Nakayama Y, Yasoshima A, Uetsuka K, Fujino Y, Tsujimoto H, Doi K. Thymoma in a dog with a part of granular cell proliferation and concurrent lymphoma cells. J Vet Med Sci 2004; 66:713-5. [PMID: 15240949 DOI: 10.1292/jvms.66.713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A 12-year-old male Shiba dog showed anemia and the swelling of systemic lymph nodes. X-ray and post mortal examinations revealed a anterior mediastinal mass. Histologically, the tumor mass consisted of four different elements; cord-like proliferation of cuboidal epithelial cells, tubular or cystic structures lined with ciliated epithelial cells, proliferation of large round-shaped epithelial cells with PAS-slightly positive granular cytoplasm, and diffuse proliferation of neoplastic lymphocytes. Epithelial cells in cord-like or cystic structures were strongly positive for cytokeratin. Granular or foamy cells were negative for all markers examined and had myelin-like bodies in the cytoplasm by electron microscopy. The neoplastic lymphocytes in the tumor mass were considered being derived from concurrent multicentric lymphoma. Based on these findings, the present case was diagnosed as thymoma with a part of granular cell proliferation and concurrent lymphoma cells.
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Affiliation(s)
- Ayumi Fukuoka
- Department of Veterinary Pathology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Japan
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Sharkey LC, McDonnell JJ, Alroy J. Cytology of a mass on the meningeal surface of the left brain in a dog. Vet Clin Pathol 2004; 33:111-4. [PMID: 15195271 DOI: 10.1111/j.1939-165x.2004.tb00358.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
An 11-year-old neutered male Labrador Retriever presented to Tufts University School of Veterinary Medicine for a 2-week history of seizures and altered behavior. Magnetic resonance imaging (MRI) revealed a homogeneously enhancing mass involving the surface of the left temporal, parietal, and occipital lobes of the brain, causing secondary hydrocephalus. Cytology samples obtained during rostrotentorial craniectomy contained abundant amorphous pink material suggestive of neuropil, scattered leukocytes, capillary fragments, large polyhedral nerve cell bodies, and other smaller cells with pale blue cytoplasm that occasionally were vacuolated and contained fine eosinophilic granules. The cytologic diagnosis was neoplasia, possibly meningioma. Ninety days after surgery the patient was euthanized after MRI results confirmed regrowth of the tumor. Histologic samples of the meningeal lesion collected at necropsy consisted of sheets and nests of loosely packed, large polygonal cells that compressed the brain parenchyma. The cytoplasm was eosinophilic and slightly granular, whereas nuclei were dense and eccentric. Neoplastic cells stained positive for S-100 protein, periodic acid-Schiff, and were partially diastase resistant. Vimentin staining was negative. Ubiquitin staining was light but diffusely positive. Ultrastructural features of the neoplastic cells included numerous secondary lysosomes and irregular pleomorphic nuclei. The final diagnosis was meningeal granular cell tumor. This case documents the cytologic and histologic features of an uncommon type of meningeal tumor.
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Affiliation(s)
- Leslie C Sharkey
- Department of Biomedical Sciences, Tufts University School of Veterinary Medicine, North Grafton, MA., USA,
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Sato T, Takada M, Shibuya H, Shirai W, Matsuo K. A Malar Granular Cell Tumor in a Djungarian Hamster. ACTA ACUST UNITED AC 2004; 51:23-6. [PMID: 15086507 DOI: 10.1111/j.1439-0442.2004.00593.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
'Granular cell' tumor observed in the malar subcutis of a Djungarian hamster was examined to determine its cellular origin. Histologically, the tumor consisted of a solid growth of oval or spindle-shaped large cells with abundant cytoplasm filled with eosinophilic granules that were periodic acid-Schiff-positive and diastase-resistant. Immunohistochemically, the tumor cells were positive to anti-vimentin and anti-desmin antibodies and a few cells showed positivity to anti-actin antibody as well. They did not react to myoglobin, S-100 protein, and glial fibrillary acidic protein (GFAP). Electron microscopic studies revealed that the tumor cells had pinocytotic vesicles, dense plaque and microfilaments. The first granular cell variant of myogenic tumor reported here in Djungarian hamsters was differentiated from granular cell tumor of Schwann cell origin.
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Affiliation(s)
- T Sato
- Laboratory of Veterinary Pathology, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-8510, Japan.
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46
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Liu CH, Liu CI, Liang SL, Cheng CH, Huang SC, Lee CC, Hsu WC, Lin YC. Intracranial Granular Cell Tumor in a Dog. J Vet Med Sci 2004; 66:77-9. [PMID: 14960817 DOI: 10.1292/jvms.66.77] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A 12-year-old female miniature poodle showed a 3-month history of neurological signs. Magnetic resonance imaging disclosed a high intensity tumor mass in the right cerebral hemisphere with compression of the lateral ventricle. At necropsy, a 2 x 3 cm white, friable mass was found in the right ventral pyriform lobe. Microscopically, the tumor cells were large, polygonal to round cells supported by a sparse fibrovascular stroma. The tumor cells typically possessed finely granular, pale eosinophilic cytoplasm with strongly positive periodic acid-Schiff (PAS) reaction. The tumor cells were immunopositive for vimentin, NSE and S-100. Ultrastructurally, the tumor cells showed large amounts of granules in the cytoplasm, and absence of basement membrane. Based on the above-mentioned findings, the intracranial granular cell tumor was diagnosed.
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Affiliation(s)
- Chen-Hsuan Liu
- Department of Veterinary Medicine, National Taiwan University, Taipei 106, Taiwan, ROC
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47
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Pusterla N, Norris AJ, Stacy BA, Smith P, Fielding CL, Moore PF, Watson JL. Granular cell tumours in the lungs of three horses. Vet Rec 2003; 153:530-2. [PMID: 14620554 DOI: 10.1136/vr.153.17.530] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- N Pusterla
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis 95616, USA
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Adamo PF, Cantile C, Steinberg H. Evaluation of progesterone and estrogen receptor expression in 15 meningiomas of dogs and cats. Am J Vet Res 2003; 64:1310-8. [PMID: 14596471 DOI: 10.2460/ajvr.2003.64.1310] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To evaluate progesterone and estrogen receptor expression in meningiomas of the CNS in dogs and cats. ANIMAL 8 dogs (1 of which was treated with gestrinone) and 5 cats with intracranial meningiomas and 2 dogs with spinal cord meningiomas; tissue samples were also obtained from 1 clinically normal dog and 1 clinically normal cat. PROCEDURE Meningioma tissue was obtained during surgery or at necropsy; samples were processed for histologic classification and immunohistochemical evaluation of the proportion of tumor cells with progesterone and estrogen receptors. Correlation among receptor expression, tumor grade, and histologic subtypes was determined. RESULT Several histologic subtypes of intracranial meningiomas were detected among tissue samples. In the cats, all intracranial meningiomas were benign. Progesterone receptor immunoreactivity was detected in 14 of 15 meningiomas. Progesterone receptor expression was identified in > 80% of cells in 8 intracranial meningiomas (4 dogs and 4 cats) and 2 spinal cord meningiomas. In samples of malignant transitional and granular cell meningiomas in dogs, progesterone receptors were detected in 32 and 4.8% of cells respectively. In 1 cat, 38% of tumor cells had progesterone receptors. In a dog treated with gestrinone, no progesterone receptors were detected in the intracranial meningioma. Estrogen receptors were only detected in the tumor of 1 dog. CONCLUSIONS AND CLINICAL RELEVANCE Results indicate a high proportion of progesterone receptors in cells of meningiomas of the CNS in dogs and cats. Antiprogesterone treatment may have a role in the treatment of unresectable or recurrent meningiomas in dogs and cats.
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Affiliation(s)
- P Filippo Adamo
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI 53706, USA
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Abstract
Radiographic signs in 64 cats that had radiography as part of the diagnostic work-up for suspected nasal disease were reviewed in a blinded fashion. Final diagnoses in these cats were rhinitis in 27, primary nasal neoplasia in 21 and non-nasal disease in 16. The signs with highest predictive value for nasal neoplasia were displacement of midline structures (73%), unilateral generalised soft tissue opacity (70%), unilateral generalised loss of turbinate detail (69%) and evidence of bone invasion (64%). The only radiographic finding that occurred more frequently in cats with rhinitis was a nasal cavity within normal limits, and the predictive value of this sign was only 38%. Radiographic signs in cats with nasal neoplasia are similar to those reported in dogs, whereas the radiographic signs in cats with rhinitis are variable and non-specific, and may be absent.
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Affiliation(s)
- C R Lamb
- Department of Veterinary Clinical Sciences, The Royal Veterinary College, University of London, Hawkshead Lane, North Mymms, Hertfordshire AL9 7TA, UK.
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Sato J, Tsurukame M, Edamoto H, Kusuoka O, Tamura K. Spontaneous Granular Cell Tumor of Cecum in a Laboratory Beagle. J Toxicol Pathol 2003. [DOI: 10.1293/tox.16.275] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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