BORGES, O. M. M.; http://lattes.cnpq.br/2968816677951311; BORGES, Olivia Maria Moreira.
Abstract:
The objective of this thesis was to demonstrate the clinical and epidemiological aspects
related to breast cancer and transmissible venereal tumor in dogs, and to report a case of
otohematoma secondary to hemangiosarcoma in a cat. In the first chapter we analyzed
information regarding the identification, nutritional score, epidemiology, physical
examination of the breast chains and diagnosis of 80 female dogs with (n = 40) and
without (n = 40) breast cancer. Prevailed those without race, elderly, with normal
nutritional score, not castrated, not subjected to contraceptives, presenting irregular heat
and submitted to chemical control based on pyrethroids. Female dogs with asymmetric
and unevenly numbered breast chains were more frequent, and it was statistically
observed that they were 11.94 times more likely to have breast cancer, concluding that
amastia is an indicator factor for breast cancer in female dogs. In the second chapter, a
case of otohematoma secondary to hemangiosarcoma in a cat was reported. In the
dermatological evaluation, the convex face of the right auricle showed a formation
compatible with otohematoma. In the cutaneous margin of the same ear, a small
nodulation was seen, which on cytology revealed hemangiosarcoma. The diagnosis was
suggested by cytological examination and confirmed by histopathological and
immunohistochemical examination. As treatment, a wide margin conchectomy was
performed. The patient was staged for three years without local recurrence or
metastasis. It was concluded that hemaniosarcoma should be considered in the etiology
of otohematoma of white-haired cats. In the third chapter, we evaluated the clinical and
epidemiological aspects of 64 dogs with Transmissible Venereal Tumor (TVTc),
correlating them to the subtypes (lymphocytoid, mixed and plasmocytoid) of this
neoplasm. Prevailed dogs from the urban area, SRD, males, whole, adults, medium size,
with access to the street being more sanitary compromised. In the genital region, the
mixed subtype prevailed, while in the extragenital region, the lymphocytoid.
Plasmacytoid was found in both regions and was generally the most prevalent for dogs
in the Paraiban Semiarid. There was an important neoplastic association between the
genitals and the oral and nasal cavities. There was a statistical difference between the
time of evolution and volume of cTVT subtypes, and the plasmacytoid subtype was
larger and resulted in more time to evolve when compared to the others. The possibility
of CTV subtypes being evolutions was inferred, where the lymphoid evolves in mixed
and the mixed in plasmacytoid.