Tratamento prévio com trilostano e levotiroxina em subdose dificultam diagnóstico de hipotireoidismo canino / Previous treatment with trilostane and levotiroxin in subdosis difficult the diagnosis of canine hypothyroidism

Background: hypothyroidism is a disease of clinical importance that causes multisystem disorders, which can be confused with other endocrinopathies. Rapid and accurate diagnosis is necessary in order to avoid worsening of the clinical manifestation. The use of drugs in a wrong way can directly imply the difficulty of the diagnostic approach, since they may cause changes in the biochemical profiles, which are of great importance as markers in diseases of animals with low thyroid function.Case: The case reports a German Spitz male, one year old and six months old, neutered, who presented bilateral do not cause itching alopecia, being treated by another professional for endocrine and fungal affections. In this same medical appointment were neglected biochemical and hematological profile exams. The exams that had been performed were skin scrapings, which showed growth of fungi and bacteria, besides the measurement of thyroid hormones as TSH, T4L (T4 free) e T3, and also the low-dose dexamethasone suppression test. Based on the findings the therapy instituted by such professional was the administration of itraconazole (ITL®), levothyroxine sodium (compounded drugs) and trilostane (compounded drugs). With absence of clinical improvement, the guardian came to the hospital veterinary, in search of a second diagnostic opinion, where during the collection of information at the time of the anamnesis the patient presented lethargy, drowsiness and absence of hair on both sides. During the clinical examination, the animal presented mild bradycardia and a slightly diminished rectal temperature; in the dermatological evaluation the presence of pup pelt, cutaneous hyperpigmentation and hair thinning in the abdominal area were noted. From this evaluation, hematological exams were requested, which had altered the presence of lymphocytosis, and biochemical tests, where changes in the cholesterol and triglyceride levels were expected, but they were within the normal range.[...](AU)

Tratamento prévio com trilostano e levotiroxina em subdose dificultam diagnóstico de hipotireoidismo canino / Previous treatment with trilostane and levotiroxin in subdosis difficult the diagnosis of canine hypothyroidism

Background: hypothyroidism is a disease of clinical importance that causes multisystem disorders, which can be confused with other endocrinopathies. Rapid and accurate diagnosis is necessary in order to avoid worsening of the clinical manifestation. The use of drugs in a wrong way can directly imply the difficulty of the diagnostic approach, since they may cause changes in the biochemical profiles, which are of great importance as markers in diseases of animals with low thyroid function.Case: The case reports a German Spitz male, one year old and six months old, neutered, who presented bilateral do not cause itching alopecia, being treated by another professional for endocrine and fungal affections. In this same medical appointment were neglected biochemical and hematological profile exams. The exams that had been performed were skin scrapings, which showed growth of fungi and bacteria, besides the measurement of thyroid hormones as TSH, T4L (T4 free) e T3, and also the low-dose dexamethasone suppression test. Based on the findings the therapy instituted by such professional was the administration of itraconazole (ITL®), levothyroxine sodium (compounded drugs) and trilostane (compounded drugs). With absence of clinical improvement, the guardian came to the hospital veterinary, in search of a second diagnostic opinion, where during the collection of information at the time of the anamnesis the patient presented lethargy, drowsiness and absence of hair on both sides. During the clinical examination, the animal presented mild bradycardia and a slightly diminished rectal temperature; in the dermatological evaluation the presence of pup pelt, cutaneous hyperpigmentation and hair thinning in the abdominal area were noted. From this evaluation, hematological exams were requested, which had altered the presence of lymphocytosis, and biochemical tests, where changes in the cholesterol and triglyceride levels were expected, but they were within the normal range.[...]

Sensory-motor neuropathy due to vincristine treatment in a dog

Background: Peripheral neuropathies secondary to chemotherapy drugs, especially when it comes to the use of vincristine, are common in humans, but rare in dogs. Neurologic manifestation depends on the kind of axonal fibers involved. When motor fibers are affected, weakness and ataxia are observed. Sensory fibers involvement, which can lead to hyperesthesia, hypoesthesia or paresthesia was reported experimentally in rats, and is common in humans but were never reported in dogs. Thus, this report aims at describing a mixed neuropathy, with sensory and motor involvement, in a dog after vincristine treatment. Case: A one year old mixed breed dog, rescued from the street, was presented with multiple nodular and ulcerated lesions, disseminated on the head, gums, flank and limbs, with progressive worsening in the last two months. Cytology of two subcutaneous and one gum nodule revealed an intense concentration of neutrophils and round cells with abnormally clumped chromatin patterns, prominent nucleoli and multiple cytoplasmic vacuoles, compatible with TVT. Treatment was initiated with a weekly administration of vincristine (0,75 mg/m2 ) combined with anti-emetic (maropitant) and H1 receptor inhibitor (ranitidine). Fast remission of the cutaneous lesions occurred. However, after the second chemo session, generalized hyperesthesia, mild ataxia, intermittent collapse and vomiting were...(AU)

Sensory-motor neuropathy due to vincristine treatment in a dog

Background: Peripheral neuropathies secondary to chemotherapy drugs, especially when it comes to the use of vincristine, are common in humans, but rare in dogs. Neurologic manifestation depends on the kind of axonal fibers involved. When motor fibers are affected, weakness and ataxia are observed. Sensory fibers involvement, which can lead to hyperesthesia, hypoesthesia or paresthesia was reported experimentally in rats, and is common in humans but were never reported in dogs. Thus, this report aims at describing a mixed neuropathy, with sensory and motor involvement, in a dog after vincristine treatment. Case: A one year old mixed breed dog, rescued from the street, was presented with multiple nodular and ulcerated lesions, disseminated on the head, gums, flank and limbs, with progressive worsening in the last two months. Cytology of two subcutaneous and one gum nodule revealed an intense concentration of neutrophils and round cells with abnormally clumped chromatin patterns, prominent nucleoli and multiple cytoplasmic vacuoles, compatible with TVT. Treatment was initiated with a weekly administration of vincristine (0,75 mg/m2 ) combined with anti-emetic (maropitant) and H1 receptor inhibitor (ranitidine). Fast remission of the cutaneous lesions occurred. However, after the second chemo session, generalized hyperesthesia, mild ataxia, intermittent collapse and vomiting were...

Reação farmacodérmica em cão: relato de caso / Drug reaction adverse cutaneous in a dog: a case report

Farmacodermia é uma reação de hipersensibilidade a um fármaco a qual pode se manifestar por meiode reações cutâneas comumente associadas a sinais sistêmicos. Relata-se a ocorrência de um caso defarmacodermia em uma cadela sem raça definida de dois anos de idade atendida em um Hospital VeterinárioUniversitário apresentando uma dermatite exsudativa caracterizada por vesículas, eritema e prurido na região dorso-lombar. O tratamento consistiu em antibioticoterapia com cefalexina durante 20 dias com remissão do quadro. Após quatro meses, em nova consulta, o animal apresentava lesõescutâneas extensas semelhantes a queimaduras. Amostras teciduais foram colhidas por meio de biópsiacutânea incisional. Cultura e antibiograma da secreção cutânea exsudativa, hemograma completo, bioquímica sérica (uréia e creatinina) e urinálise também foram solicitados. O animal foi encaminhado aocentro cirúrgico para debridagem das lesões cutâneas e prescrito ciprofloxacina, limpeza diária da pelecom permanganato de potássio, prednisona e omeprazol. Após dez dias de alta, observou-se regressãosignificativa das lesões cutâneas e, seguidos quatro meses de tratamento, o animal estava completamenterestabelecido. (AU)

Pharmacodermia is a hypersensitivity reaction to a drug which can be manifested by skin reactionscommonly associated with systemic signs. We report the occurrence of an event of adverse drug reactionsin a mongrel bitch two years old treated at a University Veterinary Hospital showing an exudative dermatitis characterized by vesicles, erythema and itching in the area back injury. Treatment consisted of antibiotic therapy with cephalexin for 20 days with remission clinic. After four monthsin new query, the animal had extensive skin injuries similar to burns. Tissue samples were collected by incisional skin biopsy. Culture and antobiogram of the skin secretion exudative, complete blood count, serum biochemistry (urea and creatinine) and urinalysis were requested. The animal was taken to the operating room for debridagem cutaneous and prescribed ciprofloxacin, daily cleaning of skin with potassium permanganate, prednisone and omeprazole. After ten days of high, there was a significant regression of cutaneous lesions and followed four months of treatment, the animal wasfully restored. (AU)

Reação farmacodérmica em cão: relato de caso / Drug reaction adverse cutaneous in a dog: a case report

Farmacodermia é uma reação de hipersensibilidade a um fármaco a qual pode se manifestar por meiode reações cutâneas comumente associadas a sinais sistêmicos. Relata-se a ocorrência de um caso defarmacodermia em uma cadela sem raça definida de dois anos de idade atendida em um Hospital VeterinárioUniversitário apresentando uma dermatite exsudativa caracterizada por vesículas, eritema e prurido na região dorso-lombar. O tratamento consistiu em antibioticoterapia com cefalexina durante 20 dias com remissão do quadro. Após quatro meses, em nova consulta, o animal apresentava lesõescutâneas extensas semelhantes a queimaduras. Amostras teciduais foram colhidas por meio de biópsiacutânea incisional. Cultura e antibiograma da secreção cutânea exsudativa, hemograma completo, bioquímica sérica (uréia e creatinina) e urinálise também foram solicitados. O animal foi encaminhado aocentro cirúrgico para debridagem das lesões cutâneas e prescrito ciprofloxacina, limpeza diária da pelecom permanganato de potássio, prednisona e omeprazol. Após dez dias de alta, observou-se regressãosignificativa das lesões cutâneas e, seguidos quatro meses de tratamento, o animal estava completamenterestabelecido.

Pharmacodermia is a hypersensitivity reaction to a drug which can be manifested by skin reactionscommonly associated with systemic signs. We report the occurrence of an event of adverse drug reactionsin a mongrel bitch two years old treated at a University Veterinary Hospital showing an exudative dermatitis characterized by vesicles, erythema and itching in the area back injury. Treatment consisted of antibiotic therapy with cephalexin for 20 days with remission clinic. After four monthsin new query, the animal had extensive skin injuries similar to burns. Tissue samples were collected by incisional skin biopsy. Culture and antobiogram of the skin secretion exudative, complete blood count, serum biochemistry (urea and creatinine) and urinalysis were requested. The animal was taken to the operating room for debridagem cutaneous and prescribed ciprofloxacin, daily cleaning of skin with potassium permanganate, prednisone and omeprazole. After ten days of high, there was a significant regression of cutaneous lesions and followed four months of treatment, the animal wasfully restored.