Consulta: creatorFacets:"Gamba,C.O."
Registros recuperados: 6
Data/hora: 05/06/2024 18:05:49

Cystadenocarcinoma simulating hemangiosarcoma of the salivary gland in dog: case report
Provedor de dados: 45
Autores: Gamba,C.O.; Damasceno,K.A.; Campos,C.B.; Ferreira,E.; Cassali,G.D.
Cystadenocarcinoma is regarded as a rare adenocarcinoma variant in animals. This work reports the case of an 8-year-old female Poodle dog with salivary gland cystadenocarcinoma with morphological characteristics similar to a hemangiosarcoma. Histopathological analysis showed a tumor mass with cystic formations containing a large amount of red blood cells. In order to distinguish these two entities, periodic acid Schiff (PAS) staining and immunohistochemical analysis were carried out with the use of cytokeratin AE1/AE3 (CK) and CD31-specific antibodies. Neoplastic cells were PAS-negative, CK-positive and CD31-negative confirming their epithelial origin. Based on the findings, the diagnosis of high grade cystadenocarcinoma was established.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bitch; Salivary gland; CD31; Neoplastic cells.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352011000300006

Metastatic well differentiated squamous cell carcinoma in the prepuce of a dog: a report of clinicopathological, immunophenotypic and therapeutic approach
Provedor de dados: 45
Autores: Auler,P.A.; Gamba,C.O.; Horta,R.S.; Lavalle,G.E.; Cassali,G.D.
This report describes a case of a well differentiated squamous cell carcinoma (SCC) of the foreskin of a dog, with metastasis in the regional lymph node. A six-year-old male intact Pit Bull dog presented a preputial ulcerated lesion with an evolution time of one year and enlarged left inguinal lymph node. Surgical resection of the preputial lesion and inguinal lymph nodes was made. The diagnosis of a well differentiated SCC was made following histopathological analysis and immunohistochemistry technique was used to confirm lymph node metastasis and to determine the histological features of the tumor. Here we demonstrated that immunohistochemistry can be an important complementary diagnostic tool to assess the prognostic features of SCC and to determine the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Metastasis; Tumor; Skin; Immunohistochemistry; Chemotherapy.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000501317

Bone marrow bi-hypoplasia in a dog with a sertoli cell tumor
Provedor de dados: 45
Autores: Valente,P.C.L.G.; Couto,R.M.; Gamba,C.O.; Vasconcelos,A.V.; Leme,F.O.P.; Ecco,R.; Paes,P.R.O.
ABSTRACT A 20-year-old unneutered male poodle presented prostration, apathy, staggering gait, lack of appetite and tick infestation. The dog was diagnosed with a Sertoli cell tumor in an undescended testicle by cytological, histopathological and immunohistochemical tests. Pancytopenia with moderate nonregenerative anemia, leukopenia and severe thrombocytopenia were detected in the complete blood count. Cytological and histopathological evaluation of the bone marrow revealed a cellularity of 30%, with erythroid (59%), lymphoid (40%) and mast cells (1%), and an absence of granulocytic, monocytic and megakaryocytic lineage cells. In post-mortem examinations, changes related to hemostatic disorders were found. The absence of microorganisms in molecular tests...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dog; Hyperestrogenism; Pancytopenia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000100095

Clinical and pathological aspects of multicentric hemangiosarcoma in a Pinscher dog
Provedor de dados: 45
Autores: Martins,B.D.C.; Torres,B.B.J.; Rodriguez,A.A.M.; Gamba,C.O.; Cassali,G.D.; Lavalle,G.E.; Martins,G.D.C.; Melo,E.G.
A 3-year-old female Pinscher dog was presented with a history of lameness and pain in hind limbs for one week which acutely progressed to non-ambulatory paraparesis. The dog had been apathetic and anorexic during the six days prior to presentation. The neurological findings were compatible with upper motor neuron signs to the left hind limb due to a spinal cord compressive mass on the twelfth thoracic vertebral body. On the other hand, signs of lower motor neurons to the right hind limb were due to a mass with a pathological fracture in the right proximal femur, compressing the sciatic nerve. A histopathological analysis of all organs revealedthe proliferation of endothelial cells showingin filtrative growth and organization into vascular structures with a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dog; Neuropathy; Hemangiosarcoma; CD-31; Immunohistochemistry.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200003

Glycogen-rich clear cell carcinoma of the feline mammary gland: case report
Provedor de dados: 45
Autores: Campos,C.B.; Gamba,C.O.; Damasceno,K.A.; Lavalle,G.E.; Cassali,G.D.
ABSTRACT The aim of this report is to describe the first histopathological, immunohistochemical, and clinical characteristics of a feline glycogen-rich clear cell carcinoma (GRCCC). A Persian queen was admitted with mammary gland tumors and underwent radical unilateral mastectomy. Overall survival was considered 33 days and death was due to clinical evolution of the disease. Microscopic evaluation demonstrated epithelial cells arranged in a predominantly solid pattern, tumor cells presented an ample, granular, and foamy clear cytoplasm, and moderate cellular pleomorfism. The presence of cytoplasmatic glycogen was confirmed through diastase digestion followed by PAS staining. Histopathological and histochemical findings lead to the diagnosis of GRCCC with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feline; Mammary gland; Neoplasm; Glycogen-rich clear cell carcinoma.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352016000501117

Tubulopapillary carcinoma of the mammary gland in a maned wolf (Chrysocyon brachyurus): histopathological and immunophenotypical analysis
Provedor de dados: 45
Autores: Gamba,C.O.; Damasceno,K.A.; Ferreira,E.; Malta,M.C.C.; Cassali,G.D.
A maned female wolf (Chrysocyon brachyurus) showed nodules in the inguinal and left abdominal cranial mammary glands. The mammary gland was surgically excised, and microscopic analysis revealed epithelial cell proliferation in a tubular and papillary pattern; delicate fibrovascular stalks presenting numerous layers of moderately pleomorfic epithelial cells were observed. This histologic appearance was compatible with a diagnosis of mammary tubulopapillary carcinoma. The immunohistochemical profile revealed nuclear positivity for estrogen (70%) and progesterone (at least 90% of the neoplastic cells). The myoepithelium-associated with neoplastic cells lacked integrity, as evidenced by failed smooth muscle alpha actin reactivity in microinvasive areas. A low...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chrysocyon brachyurus; Female maned wolf; Immunohistochemistry; Mammary gland; Tubulopapillary carcinoma.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352011000600014