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| Argenta,Fernando Froner; Pereira,Paula Reis; Bertolini,Marianna; Fratini,Letícia Mendes; Saccaro,Renata de Oliveira; Sonne,Luciana; Driemeier,David; Pavarini,Saulo Petinatti. |
| ABSTRACT: A carcinoid is a rare neoplasm derived from neuroendocrine cells that may arise in the hepatobiliary system. This report described two cases of carcinoid of the gallbladder in dogs, with emphasis on the clinical, pathological and immunohistochemical aspects. Case 1 was a 10-year-old female Shih Tzu, with a history of prostration and occasional episodes of diarrhea and vomiting. Case 2 was a 10-year-old male Cocker Spaniel, with a history of diarrhea and abdominal pain. Abdominal ultrasonography suggested a neoplasm of the gallbladder in both cases. The dogs underwent cholecystectomy, and 10% formalin-fixed samples were sent for pathological examination. Histologically, a neoplastic proliferation of neuroendocrine cells was observed in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Canine; Neoplasm; Neuroendocrine carcinoma; Immunohistochemistry. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000200551 |
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| Pereira,Paula Reis; Cruz,Raquel Aparecida Sales da; Jühlich,Luciane Maria; Sonne,Luciana; Barcellos,David Emílio Santos Neves de; Driemeier,David. |
| ABSTRACT: Rhabdomyoma is a rare neoplasm of striated muscle that occurs predominantly in the myocardium. In animals, cardiac rhabdomyoma are observed as incidental lesions in slaughter pigs and have been rarely described in other species, such as cattle, dogs, and deer. This report describes a case of cardiac rhabdomyoma in a male pig at slaughter age that died suddenly in the pre-slaughter period. At necropsy, multiple nodules were observed in the right and left ventricular walls and the interventricular septum. Histopathological examination showed neoplastic proliferation composed of polyhedral cells, with vacuolated cytoplasm that sometimes presented a “spider cell” appearance. Histochemical staining with Schiff’s periodic acid revealed glycogen... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pig; Cardiac tumor; Glycogen; Spider cell; Immunohistochemistry. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018001000553 |
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| Pereira,Paula Reis; Tagliari,Nelson Junior; Leite-Filho,Ronaldo Viana; Schaefer,Gabriela da Cruz; Costa,Fernanda Vieira Amorim da; Pavarini,Saulo Petinatti. |
| ABSTRACT: Neuroblastic tumors can originate from the central neuraxis, olfactory epithelium, adrenal medullary region or autonomous system. Ganglioneuroblastoma are a type of neuroblastic tumor, with very few case descriptions in animals. Diagnosis of facial nerve ganglioneuroblastoma was made in a feline leukemia virus-positive 11-month-old cat. The cat had hyporexia, left head tilt, depressed mental state, horizontal nystagmus, inability to retract the pinched left lip, anisocoria, ptosis, and absence of the menace reflex. Gross necropsy showed a mass at the left facial nerve root region. Histological examination of this mass showed neoplastic proliferation of neuroblasts arranged in a cohesive pattern and mature ganglion cells. Ganglion cells were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Neuronal neoplasm; Cranial nerve VII; Immunohistochemistry; Feline leukemia virus.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500551 |
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| Panziera,Welden; Bianchi,Ronaldo Michel; Pereira,Paula Reis; Flores,Mariana Martins; Togni,Monique; Pereira,Roberta Carneiro da Fontoura; Corte,Flávio De La; Fighera,Rafael Almeida. |
| ABSTRACT: This report described clinical, epidemiological, and pathological aspects of ischemic myelopathy caused by fibrocartilaginous embolism (FCE) in a 10-year-old, mixed breed gelding. Clinically, the horse presented acute hind limbs paralysis, with a clinical course of approximately 24 hours. At necropsy, no gross lesions were observed. Cross-sections of the spinal cord revealed focally extensive areas of malacia from the T10 to L4 segments. Focally extensive areas of liquefactive necrosis involving the gray matter and adjacent white matter were observed on histologic sections. The lumen of multiple blood vessels in the periphery of the necrotic areas was occluded by fibrocartilaginous emboli that strongly stained with alcian blue. Clinical signs,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Equine diseases; Neurological disorder; Ischemic myelopathy; Pathology. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000200502 |
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