Malignant epitheliod hemangioendothelioma of the thyroid: a case report

Primary malignant epithelioid hemangioendothelioma (MEH) of the thyroid is a rare neoplasia with only a few cases reported in the literature. We report a 75 year old man, who presented with a substernal goiter and compressive symptoms. Ultrasonographic evaluation revealed a hypoechogenic nodule in the left lobe, measuring 4.1 cm in maximum diameter, and associated gross calcifications. Fine needle aspiration yielded hemorrhagic material. A left thyroid lobectomy and isthmusectomy was performed. The surgical specimen contained a malignant epithelioid hemangioendothelioma measuring 6 x 4 x 3 cm that had infiltrated about 50% of the thyroidal parenchyma, and surrounded a necrotic nodule. Immunohistochemistry results corroborated the histopathological findings; staining was positive for AE1/AE3, CD31, CD34, factor VIII-related antigen, and Ki-67 expression. Because of the patient’s comorbidities, surgical complementation was not undertaken and he has been undergoing conservative treatment.

Undifferentiated pulmonary adenocarcinoma of clear cells associated to hypertrophic osteopathy in a dog

Background: Most of the primary pulmonary tumors in dogs are malignant and from epithelial origin, being bronchioalveolar tumors more prevalent. Adenocarcinoma of clear cells, however, is a very rare pulmonary tumor and its origin is still unknown. It is related to several clinical abnormalities, including hypertrophic osteopathy, an unusual paraneoplastic syndrome characterized by a periosteal reaction along the shaft of long bones. Because of the unusual presentation of the pulmonary adenocarcinoma, the aim of this study was to describe the radiographic, histopathological, and immunohistochemical fi ndings of a dog affl icted with hypertrophic osteopathy secondary to an undifferentiated pulmonary adenocarcinoma of clear cells. Case: A 12-year-old, 45 kg, not castrated male Great Dane dog was presented with painful swelling of all four limbs and moderate respiratory distress. Radiographic examination and computed tomography of the limbs showed palisade-like periosteal bone proliferation involving radius, ulna, femur, patella, tibia, fi bula, tarsus, metacarpal, metatarsal and digits, suggesting hypertrophic osteopathy. Radiographic examination and computed tomography of the lungs also showed a round mass well delimited localized in the right diaphragmatic lobe. A lobectomy of the right diaphragmatic lobe and partial lobectomy of accessory lobe were performed. A poorly differentiated clear squamous cell carcinoma was diagnosed by histological examination. An immune-panel of CK5/CK6, CK7, p63 and TTF-1 was used for immunophenotyping. Immunostaining was weakly positive for CK5/CK6 and negative to all others. Therefore, the diagnosis was poorly differentiated clear cell adenocarcinoma. The dog showed improvement in clinical signs seven days after surgery. One month postoperatively, radiographic examination of the limbs showed less intense periosteal reaction and initiation of bone remodeling. Discussion: Primary pulmonary tumors are considered very infrequent in small animals, but its true incidence rate is dif- fi cult to establish in animal populations. The histological origin of the tumor in the present case, as verifi ed in the literature, is not well established by histological analysis. In these situations, the immunohistochemistry panel may be useful. The modifi cation of the diagnosis between histological analysis and by immunohistochemistry, among other factors, might be due to transdifferentiation from one phenotype to another at various stages in the neoplastic process. The clear cell appearance observed in this case may be verifi ed in all types of carcinoma due to intracellular accumulation of glycogen, most of which is dissolved during the preparation of paraffi n sections. This uncommon neoplasm apparently did not infl uence the radiographic or tomographic fi ndings of the hypertrophic osteopathy in the present case. The frequency of metastases depends on the histological type of the tumor, being common in the pulmonary adenocarcinoma and usually to tracheobronchial lymph nodes and pulmonary parenchyma. Although in this case the imaging studies did not show metastases to other pulmonary lobes, the histological exams showed metastatic lesions that may be associated to the dog’s death after the surgery.

Onicodistrofia lupoide simétrica canina: relato de caso

Symmetric lupoid onychodystrophy, or lupoid onychitis, is a multifactor immune-mediated onychopathy. The aim of the present study is to report the occurrence of lupoid onychitis in a two year-old mongrel dog helped at the Small Animal Dermatology Service of Sao Paulo State University Veterinary Hospital, in Botucatu, São Paulo. The animal presented lameness, onycholysis in five digits, paronychia, onychomadesis, nail softening and leuchonychia, as well as melicerous crusts in interdigital spaces and nailbeds. No non-dermatological systemic symptoms were observed. Complementary exams were negative for parasites or fungi. After 15 days of treatment there was partial recovery followed by recurrence. Onychectomy was performed in two digits for histopathological examination and fungal culture, which was negative. Histopathology was consistent with lupoid onychitis, reinforcing the importance of this complementary exam.

Glioma misto em um cão: relato de caso

Intracranial neoplasms are common causes of neurological disorders in middle-aged and elderly dogs. With the feasibility of computed tomography, it is now possible to determine the extent and exact location of brain tumors, identifying them ante mortem in dogs and cats. This paper aims to report the occurrence of a mixed glioma in a Boxer dog examined at the Veterinary Hospital of Unesp, Botucatu Campus. The animal presented with a brain syndrome of acute onset and progressive course. CT scan showed the presence of a mass in the right cerebral hemisphere extending from the frontal to the parietal region and involving the basal ganglia. Given the gravity of the neurological disorder, the owner chose to perform euthanasia. Microscopic analysis of the mass allowed the diagnosis of mixed glioma.

Fasceíte necrotizante: relato de dois casos

Necrotizing fasciitis is a rare dermatopathy that promotes subcutaneous tissue damage, associated to substantial morbidity and mortality if treatment is not initiated at the beginning of the condition. The objective of the present study is to report the occurrence of two cases of necrotizing fasciitis, one in a miniature female Pinscher and the other one in a female Poodle, both attended at the Veterinary Hospital of FMVZ/Unesp-Botucatu. The animals presented ulcerated, erythematous lesions with secretion and points of necrosis along fascial planes. Bacterial culture was positive for Streptococcus spp. The animals were treated with enrofloxacin, associated to topical cleaning of the lesions with saline solution and triclosan-based soap and rifampicin spray. Both animals presented total remission of lesions after approximately 15 days of treatment. The present report aims to alert veterinary clinicians to the severity of Streptococcus spp infections.

Embriologia de Nymphaea L. (Nymphaeales - Nymphaeaceae): implicações para a evolução inicial das angiospermas

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Síntese e caracterização espectroscópica de novos vanadosilicatos utilizando templates orgânicos derivados de piperidinas

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Influência de gênero e do ciclo estral no reflexo auditivo de sobressalto em ratos Wistar

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Análise de ação educativa sobre vigilância do óbito infantil para profissionais da saúde do Estado do Maranhão

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Análise quantitativa das descargas epileptiformes generalizadas e da neuroimagem de pacientes com epilepsia generalizada idiopática

Pós-graduação em Fisiopatologia em Clínica Médica - FMB

Efeitos do uso de Decanoato de Nandrolona sobre a junção neuromuscular de ratos em processo de envelhecimento submetidos ao exercício resistido

Pós-graduação em Bases Gerais da Cirurgia - FMB

Mecanismos de diferenciação cromossômica em besouros da subfamília Cassidinae s.l. (Polyphaga, Chrysomelidae)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Os (Des) caminhos da sífilis congênita em Botucatu/São Paulo

Pós-graduação em Enfermagem (mestrado profissional) - FMB

Impacto de andrógenos na diferenciação e atividade de osteoclastos em cultura celular

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)