Felipe Paiva

Felipe Paiva
São Paulo State University | Unesp · Departamento de Clinica e Cirurgia Veterinária

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28
Publications
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60
Citations

Publications

Publications (28)
Article
Full-text available
Apocrine gland anal sac adenocarcinoma is an aggressive neoplasm, and surgery remains the treatment of choice, although it is controversial in advanced cases. The prognostic factors are not well established. Human Epidermal Growth Factor Receptor 2 (HER2) is a membrane protein related to tumorigenesis, whereas Ki67 is a nuclear protein related to c...
Article
Full-text available
Skin grafting is a simple and very useful surgical technique for wound repair, especially where there is difficulty in performing direct synthesis or other reconstructive techniques. low-intensity laser (LIL) has already been used successfully in cases where the graft was applied to wounds shortly after its creation. However, LIL still lacks standa...
Article
Mast cell tumors, which are neoplasms with variable behavior, from less aggressive to highly metastatic tumors, account for 16%–21% of cutaneous neoplasms in dogs. The diagnosis and grading of mast cell tumors are based on cytological analysis and histological evaluation, which facilitate appropriate planning for surgical and chemotherapeutic treat...
Article
Lymphomas, malignant neoplasms that originate in the lymphocytes, have a high incidence in domestic animals. This paper aimed to describe the clinical and epidemiological findings of 200 cases of canine lymphoma evaluated over nine years (2011–2019) at the Oncology Service of the Veterinary Hospital at The Federal Rural University of Rio de Janeiro...
Article
Full-text available
Mast cell tumors (MCTs) are the most common malignant cutaneous tumors in dogs, and they present extremely variable biological behavior. The interaction between RANK, RANK-L, and immune checkpoints is frequently detected in the tumor microenvironment, and, together, they participate in every stage of cancer development. Thus, the aim of this study...
Article
Full-text available
Anal sac neoplasms are common in companion animals, and the epidemiological profile has been extensively described in international studies; however, national data are still lacking. Data on the Brazilian reality of anal sac carcinoma cases’ diagnosis and treatment are also scarce. The purpose of this study was to retrospectively evaluate cases of...
Article
Full-text available
O retalho de padrão axial representa uma importante opção na cirurgia reconstrutiva, sendo composto por uma artéria e uma veia cutânea direta em sua base, permitindo que uma grande área de pele possa constituir o retalho para recobrir a ferida. Entretanto, a técnica pode apresentar complicações, principalmente com a necrose devido ao comprometiment...
Article
Full-text available
Hemangiosarcoma is a mesenchymal neoplasm that originates in the endothelial cells of blood vessels. According to the location of origin, they can be classified as non-visceral and visceral types. Hemangiosarcoma can be very aggressive and metastasize to distant organs.
Article
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Canine transmissible venereal tumors (TVT) have a high incidence in Brazil. This is partly due to the large population of stray dogs and the ineffectiveness of epidemiological control programs. This study aimed to describe the epidemiological data, clinical manifestations, and treatments used in dogs affected by TVT. Data were retrospectively colle...
Article
Full-text available
Simple Summary Hemangiosarcoma is a mesenchymal neoplasm that originates in the endothelial cells of blood vessels. According to the location of origin, they can be classified as non-visceral and visceral types. Hemangiosarcoma can be very aggressive and metastasize to distant organs. The aim of this critical review is to present data on the epidem...
Article
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Surgical excision of solid tumors is required for local control of neoplasms. However, surgical trauma can stimulate the release of proangiogenic growth factors, suppressing cell-mediated immunity and favoring the development of micrometastases and progression of residual disease. The present study aimed to evaluate the intensity of the metabolic r...
Article
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Canine transmissible venereal tumor (TVTC) is a highly casuistic transmissible neoplasm in Brazil. Chemotherapy with vincristine sulfate is considered the treatment of choice, but the need for weekly applications and hematological monitoring, in addition to costs, are obstacles to owners’ adhesion to the treatment. Lomustine is an alkylating class...
Article
Full-text available
Objetivou-se caracterizar a concentração sérica da vitamina D e das PFAs (Proteínas de Fase Aguda) (alfa-1 glicoproteína ácida, haptoglobina, transferrina, ceruloplasmina, albumina, IgA, IgG e alfa-1 – antitripsina) em cães com linfoma multicêntrico, submetidos ao tratamento quimioterápico com protocolo CHOP (Ciclofosfamida, Doxorrubicina, Vincrist...
Article
Full-text available
The canine transmissible venereal tumor (TVTC) is a neoplasm transmitted mainly through copulation and with a high incidence in stray dogs in Brazil. In the process of tumor evolution of TVTC, the progression, stationary and regression phases are recognized. The host immunity is related to the disease’s biological behavior, however, spontaneous reg...
Article
Full-text available
O tumor venéreo transmissível canino (TVTC) é uma neoplasia transmitida principalmente através da cópula, com elevada incidência em cães errantes no Brasil. No processo de evolução tumoral do TVTC, são reconhecidas as fases de progressão, estacionária e de regressão. O estado imunológico do hospedeiro está relacionado ao comportamento biológico da...
Article
Full-text available
This study aimed to evaluate the serum concentration of vitamin D (25-Hydroxyvitamin D) and acute phase proteins (APPs; alpha-1 acid glycoprotein, haptoglobin, transferrin, ceruloplasmin, albumin, IgA, IgG and alpha-1 - antitrypsin) as potential biomarkers for prognostic and therapy response in dogs with multicentric lymphoma submitted to the CHOP...
Conference Paper
Introdução: O mastocitoma é a neoplasia cutânea de maior incidência em cães e possui comportamento variável e imprevisível, o diagnóstico do tumor é obtido por meio de citologia aspirativa ou biópsia incisional. Contudo, o exame histopatológico torna-se necessário para classificar o grau de malignidade do tumor. O tratamento preconizado em cada cas...
Article
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Background: Urethral tumors are uncommon in canines, represented predominantly by transitional cell carcinoma, marked by aggressive behavior associated with short life expectancy. Definitive diagnosis is achieved by histopathological analysis. Surgery associated with chemotherapy is the main therapeutic alternative. The aim of this paper is to repo...
Article
Full-text available
Background: Canine transmissible venereal tumor (TVT) is one of the most common canine neoplasms in Brazil. Lesions develop mainly in the genital tissue and less frequently in other areas, in the extragenital form. Metastasis is rare, and the disease progression depends on the patient's immune status. The treatment of choice is chemotherapy with vi...
Article
Full-text available
Mast cell tumors (MCTs) are hematopoietic neoplasms composed of mast cells. It is highly common in dogs and is extremely important in the veterinary oncology field. It represents the third most common tumor subtype, and is the most common malignant skin tumor in dogs, corresponding to 11% of skin cancer cases. The objective of this critical review...
Article
Cutaneous horn is a skin disease with low incidence and few citations in the literature. This report describes a dog with multiple cutaneous lesions of papillomatosis and one giant cutaneous horn on the face. Two sessions of cryotherapy achieved complete remission of the lesions. Cutaneous horn is a skin disease with low incidence and few citations...
Article
Full-text available
The occurrence of neoplasms in birds is still unknown, with the literature based mainly on scarce reports, in this context, data about epidemiology in specific species are almost nonexistent. Sarcomas are malignant mesenchymal origin neoplasms, which can develop from different tissues, such as adipose, cartilage, bone, among others. The occurrence...
Article
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Neoplasias que acometem as glândulas salivares de cães e gatos são extremamente raras, não sendo reportadas predileção por raça ou sexo. Os sinais clínicos incluem o aumento de volume local como achado mais frequente, e manifestações em consequência desse aumento. O diagnóstico definitivo se dá através do exame histopatológico, porém a citologia as...
Article
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Os sarcomas de tecidos moles (STM) são neoplasias mesenquimais malignas, que acometem principalmente a pele e o subcutâneo, respondendo por 8 a 15% dos tumores cutâneos caninos (Liptak; Christensen, 2020). O grupo é composto por uma série de neoplasias mesenquimais que possuem comportamento biológico, macroscopia e microscopia semelhantes entre si,...
Article
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Background: The lung-digit syndrome is a rare syndrome characterized by the presence of a primary pulmonar neoplasia manifesting metastasis to the digit, occurring exclusively in felines. The diagnosis is based on the clinical signs, associated with radiographic and histopathological exams. There are no therapeutic protocols well-established, and s...
Article
Full-text available
O mastocitoma está entre os tumores de pele mais comuns nos cães, possuindo grande importância na rotina clínica e cirúrgica, porém sua ocorrência em animais abaixo de um ano de idade é considerada rara, acometendo geralmente animais de meia idade a idosos. Seu diagnóstico é feito através de exames anatomopatológicos, principalmente a histopatologi...

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