RESUMO
A 9-month-old male llama (Lama glama) was presented because of a rapidly growing mass on the right side of the face. Radiographs revealed a marked expansion of the right caudal face region with bone lysis involving the maxilla and the nasal, lacrimal, zygomatic, and palatine bones. Cytologically, the mass consisted of atypical round to polygonal cells with round nuclei and basophilic cytoplasms that formed acini and rows. Histologically, the mass consisted of anastomosing cords and sheets of neoplastic odontogenic epithelial cells embedded in a loose fibrovascular connective tissue. Single layers of peripheral, polarized, palisading, columnar epithelial cells were seen at the edges of some cords. Within the centers of the cords, epithelial cells showed rapid progression to keratin production. The histologic diagnosis was keratinizing ameloblastoma. Ameloblastomas are neoplasms of odontogenic epithelium that tend to be locally aggressive and can cause substantial destruction of bony structures. Because ameloblastomas do not tend to metastasize, they can be successfully treated by complete surgical excision, performed before extensive bony destruction occurs. Ameloblastoma, although expected to be rare, should be onthe list of differential diagnoses for facial swelling in llamas.
Assuntos
Ameloblastoma/veterinária , Camelídeos Americanos , Neoplasias Maxilomandibulares/veterinária , Ameloblastoma/patologia , Animais , Evolução Fatal , Neoplasias Maxilomandibulares/patologia , Queratinas/metabolismo , MasculinoRESUMO
A 2-week-old Morgan filly examined because of lameness of 5 days' duration was found, on the basis of clinical and radiographic findings, to have septic physitis of the distal end of the radius. The foal was treated by means of intraosseous regional perfusion with penicillin and amikacin and systemic administration of antimicrobials. Intraosseous regional perfusion was performed 3 times. The foal was anesthetized for the first episode of intraosseous regional perfusion, but was only sedated for the subsequent 2 episodes. Antimicrobials were administered systemically for 22 days. Foals with septic physitis are typically considered to have a guarded to poor prognosis for recovery; however, this treatment regimen resulted in relatively fast and uncomplicated resolution of the infection in this foal.
Assuntos
Antibacterianos/administração & dosagem , Doenças dos Cavalos/tratamento farmacológico , Osteomielite/veterinária , Animais , Antibacterianos/farmacocinética , Quimioterapia do Câncer por Perfusão Regional/veterinária , Feminino , Membro Anterior , Cavalos , Inflamação/veterinária , Infusões Intraósseas/veterinária , Coxeadura Animal/etiologia , Osteomielite/tratamento farmacológico , PrognósticoRESUMO
Congenital megaesophagus is often sufficiently debilitating to a young puppy to result in an owner's request for euthanasia. If medically managed, some puppies may develop a functional esophagus and mature normally; in others, the dilation may persist, but nutritional support may be sufficient to allow skeletal maturation. Hypertrophic osteoarthropathy or hypertrophic osteopathy is well recognized in many animal species. Pulmonary neoplasia is most commonly associated with development of the secondary bone changes, but numerous other causes exist. The chronic changes of hypertrophic osteopathy were identified in a 6-year-old German Shepherd that was debilitated by persistent congenital megaesophagus. To the investigators' knowledge, a relationship between long-term esophageal dilatation and hypertrophic osteopathy has only been reported once in a human patient.
Assuntos
Doenças do Cão/diagnóstico , Acalasia Esofágica/veterinária , Osteoartropatia Hipertrófica Primária/veterinária , Animais , Diagnóstico Diferencial , Doenças do Cão/diagnóstico por imagem , Cães , Acalasia Esofágica/complicações , Acalasia Esofágica/congênito , Acalasia Esofágica/diagnóstico , Acalasia Esofágica/diagnóstico por imagem , Coxeadura Animal/etiologia , Masculino , Osteoartropatia Hipertrófica Primária/complicações , Osteoartropatia Hipertrófica Primária/diagnóstico , Osteoartropatia Hipertrófica Primária/diagnóstico por imagem , Radiografia , Vômito/etiologia , Vômito/veterináriaRESUMO
The purpose of this study was to describe the ultrasonographic appearance of the gastrointestinal viscera of healthy llamas and alpacas. Six adult llamas, five juvenile llamas, and five adult alpacas were scanned with a 5 MHz linear transducer. The first and third gastric compartments occupied most of the left and right ventral abdomen, respectively. The saccules of the first compartment gave its wall a unique, hyperechoic appearance; whereas, all other viscera appeared as tubular structures. Except for the third gastric compartment, motility was visible in all structures by movement of fluid segments or contraction of the wall. Where it could be measured, wall thickness was between 2 and 4 mm, except that the caudal portion of the third compartment occasionally had a thicker wall. Fluid segments in the intestines were generally short and short lived. This description of normal camelids should aid in the ultrasonographic assessment of camelids suspected to have a gastrointestinal disorder.