Tricoblastoma em canino doméstico / Trichoblastoma in a domestic canine

A pele é um órgão complexo constituído por diferentes tipos celulares e possui exposição direta ao meio ambiente, representando uma barreira física do organismo. Devido a tais fatores pode ocorrer o aparecimento de diversos tipos tumorais. Além disso, a pele possui alta capacidade de renovação celular, o que aumenta as chances de mutações em comparação com outros tecidos, o que a torna um lugar favorável para o desenvolvimento de neoplasias. É comum ocorrer nos animais domésticos o desenvolvimento de neoplasias cutâneas, sendo que sua prevalência depende de fatores como genética, idade, raça, relação hormonal, nutrição, entre outros. O tricoblastoma é uma neoplasia benigna cutânea comum em cães e gatos adultos, animais com idade entre seis e nove anos são os mais acometidos, e não existe predisposição em machos e fêmeas. É derivado do folículo piloso primitivo e possui componentes epiteliais e mesenquimais. O tricoblastoma não é considerado agressivo, porém, existem relatos na literatura com características de neoplasia maligna. O tratamento de eleição do tricoblastoma é a exérese cirúrgica total do mesmo, com margens de segurança entre 1 e 2cm. O presente estudo tem como objetivo relatar o caso de um animal atendido no Centro Médico Veterinário do Centro Universitário do Sul de Minas, o qual foi diagnosticado com tricoblastoma.

The skin is a complex organ composed of different cell types and has direct exposure to the environment, representing an organism's physical barrier. Due to such factors, the appearance of several tumor types may occur. In addition, the skin has a high capacity to perform cell renewal, which increases the chances of mutations compared to other tissues, turning it a favorable place for the development of neoplasms. The development of skin neoplasms in domestic animals is a common fact, and their prevalence depends on factors such as genetics, age, race, hormonal relationship, nutrition, among others. Trichoblastoma is a benign cutaneous neoplasm common in adult dogs and cats, animals aged between six and nine years are the most affected, and there is no predisposition in males and females. It is derived from the primitive hair follicle and has epithelial and mesenchymal components. Trichoblastoma is not considered aggressive; however, there are reports in the literature with characteristics of malignant neoplasm. The treatment of choice for trichoblastoma is the total surgical excision, with safety margins between 1 and 2cm. The present study aims to report the case of an animal treated at the Veterinary Medical Center of the University Center of Southern Minas Gerais, which was diagnosed with trichoblastoma.

Abscesso estromal em córnea de cão / Corneal stromal abscess in a dog

Background: The eye is an important sense organ responsible for sight. The cornea is the outermost of many eye layers,being predisposed to several lesions, some of them being frequent in small animal clinics meanwhile others are unusualand seldom reported in specialized literature. The stroma abscess is a common condition in horses, but atypical in dogs,its a condition in which a microperforation in the corneal epithelium allows microorganisms or a foreign body to penetratethe corneal stroma, and those become inside the cornea after a re-epithelialization, producing an intense inflammatoryresponse. Therefore, this case reports a case of deep stromal abscess in a Shih Tzu dog.Case: A 4-year-old female Shih Tzu, weighing 4.6 kg, was submitted to ophthalmic examination in which the left eyepresented an opaque yellowish-white protruding structure located on the right side, in the center of the cornea (3 o´clockposition), bulbar and palpebral conjunctival hyperemia and congestion, chemosis, blepharospasm, and a moderate amountof mucous discharge. The clinical diagnosis was stromal abscess with reflex uveitis. A differential diagnosis should includeconditions affecting the anterior part of the cornea, such as an epithelial inclusion cyst and a corneal ulcer. The inclusioncyst, contrarily to the corneal abscess, doesnt cause pain, meanwhile, the corneal ulcer was ruled out by the FluoresceinStaining Test. The recommended treatment was surgical, through lamellar keratectomy, followed by overlapping pedicledconjunctival graft and third eyelid flap. In association with the surgical treatment, oral antibiotics, anti-inflammatory,and opioids, plus topical antibiotics and autologous serum eye drop. Seventy days post-surgery, the previously observedinflammatory signs were no longer present. In the conjunctival graft insertion site perpetuated a scar leucoma with few...(AU)

Abscesso estromal em córnea de cão / Corneal stromal abscess in a dog

Background: The eye is an important sense organ responsible for sight. The cornea is the outermost of many eye layers,being predisposed to several lesions, some of them being frequent in small animal clinics meanwhile others are unusualand seldom reported in specialized literature. The stroma abscess is a common condition in horses, but atypical in dogs,it’s a condition in which a microperforation in the corneal epithelium allows microorganisms or a foreign body to penetratethe corneal stroma, and those become inside the cornea after a re-epithelialization, producing an intense inflammatoryresponse. Therefore, this case reports a case of deep stromal abscess in a Shih Tzu dog.Case: A 4-year-old female Shih Tzu, weighing 4.6 kg, was submitted to ophthalmic examination in which the left eyepresented an opaque yellowish-white protruding structure located on the right side, in the center of the cornea (3 o´clockposition), bulbar and palpebral conjunctival hyperemia and congestion, chemosis, blepharospasm, and a moderate amountof mucous discharge. The clinical diagnosis was stromal abscess with reflex uveitis. A differential diagnosis should includeconditions affecting the anterior part of the cornea, such as an epithelial inclusion cyst and a corneal ulcer. The inclusioncyst, contrarily to the corneal abscess, doesn’t cause pain, meanwhile, the corneal ulcer was ruled out by the FluoresceinStaining Test. The recommended treatment was surgical, through lamellar keratectomy, followed by overlapping pedicledconjunctival graft and third eyelid flap. In association with the surgical treatment, oral antibiotics, anti-inflammatory,and opioids, plus topical antibiotics and autologous serum eye drop. Seventy days post-surgery, the previously observedinflammatory signs were no longer present. In the conjunctival graft insertion site perpetuated a scar leucoma with few...