Avaliação ultrassonográfica torácica em cães com efusão pleural e/ou pericárdica

Sarraff-Lopes, Ana Paula; Larsson, Maria

doi:10.11606/s1413-95962011000500007

Cited by 2 publications

(2 citation statements)

References 6 publications

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“…Além disso, microscopicamente foram visualizadas áreas de hemorragia, o que também reforça a causa morte. Traumas, coagulopatias e erosões em vasos por tumores ou processos inflamatórios, também podem ser apontados como causa de efusão pleural [14], sendo assim, compatível com este caso, pois o animal possuía metástase pulmonar de carcinoma mamário.…”

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Breast Carcinoma with Pulmonary Metastasis in Armadillo (Eupharactus sexcinctus)

Alves

Siqueira²,

Rameh-de-Albuquerque³

et al. 2018

Acta Scientiae. Vet.

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Background: Breast neoplasms are among the most common neoplastic conditions affecting domestic animals and are considered the most common type of cancer affecting women, bitches, and cats. However, there are few reports on breast neoplasms in wild animals, and there is no record of their occurrence in armadillos worldwide. Breast neoplasms are hormone-dependent neoplasms that often cause lymph node and pulmonary metastases. The diagnosis is based on the patient’s history, complete physical examination, and complementary tests. Here we report a case of mammary neoplasia with pulmonary metastasis in an armadillo (Euphractus sexcinctus).Case: A senile female armadillo was referred to us for treatment with a history of hyporexia and nodules in both breasts. Ultrasonographic examination revealed a hypoechogenic nodular lesion with a cross-section of approximately 1.3 × 1.4 cm and well-defined borders. The lesion had a circumscribed aspect in the left mammary gland. In the right mammary gland, there was a heterogeneous lesion with cystic formations and anechoic content. Cytopathological examination of the nodules was performed by fine needle aspiration cytology and revealed the presence of epithelial cells with ovoid and aberrant nuclei, anisocariasis, binucleation, coarse chromatin, and a high nucleus to cytoplasm ratio suggestive of carcinoma. The animal had a lean body score due to hyporexia that had evolved to anorexia and was undergoing supportive treatment. Nevertheless, the animal died two months after the cytologic diagnosis. A necropsy was performed. Cutting of the breast nodules revealed a hardened pale yellow material. The animal had pronounced pleural effusion, hemorrhage, and numerous pale yellow nodules of various sizes with firm consistency throughout the lung parenchyma. It also had hepatomegaly and splenomegaly. Fragments of various organs were fixed in 10% buffered formalin, routinely processed, embedded in paraffin, and stained with hematoxylin and eosin. Upon microscopic examination, the mammary nodes demonstrated a proliferation of epithelial cells organized into tubular structures with intraluminal papillary projections. The cells had a polyhedral profile and a high nucleus to cytoplasm ratio, moderately pleomorphic evident nuclei. Some cells had coarse chromatin. We observed moderate anisocytosis and anisocariasis, as well as mitotic figures. In the lungs, nodules with the same microscopic characteristics of the mammary nodes were observed in addition to intense congestion and multifocal hemorrhages.Discussion: This type of mammary carcinoma is considered an invasive neoplasm of ductal origin, and is morphologically characterized by rounded, ovoid, or angulated tubule formations with intraluminal projections. The patient’s prognosis is directly related to the occurrence of vascular invasion and metastasis. If present, these conditions may lead to reduced patient survival. Since the lungs are the most common sites of metastasis, pleural effusion caused by vessel erosion due to the presence of tumors is common and can in most cases lead to respiratory failure and eventually death. In this case, the association between the necropsy findings and the results of the histopathological examination enabled us to classify the carcinoma as one of mammary origin and of the tubulopapillary type with pulmonary metastasis. This is the first report of mammary carcinoma in an armadillo in captivity in the world.

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Section: Discussionunclassified

Breast Carcinoma with Pulmonary Metastasis in Armadillo (Eupharactus sexcinctus)

Alves

Siqueira²,

Rameh-de-Albuquerque³

et al. 2018

Acta Scientiae. Vet.

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“…The technique of thoracic ultrasonography has been explored in recent years to aid in the diagnosis of lung diseases (BABICSAK et al, 2011). Despite its limitations in evaluating lesions below gaseous collections, the technique allowed differentiation between pulmonary and pleural lesions, as well as peripheral pulmonary lesions (SARRAFF-LOPES & LARSSON, 2011).…”

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Dioctophymatosis as cause of dyspnea in a dog

et al. 2019

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Dioctophyme renale is a parasite of the nematode class that can infect various species, including humans and dogs. Usually, the parasite migrates to the right kidney of the definitive host. Although, aberrant migrations have been previously reported, they mainly occur without clinical manifestations. No reports of dyspnea secondary to D. renale infestation has been found in the reported literature. The aim of this paper is to report intense respiratory distress caused by the presence of the parasite in the thoracic cavity of a dog. Radiographic images revealed multiple circular structures with a cavity with a radiopaque, thick contour in the thorax, which raised the suspicion of pulmonary bullae. Ultrasound examination revealed nematode infestation in the right kidney, scrotum, and thoracic cavity. Subsequently, right nephrectomy, orchiectomy and trans-sternal thoracotomy were performed to remove the parasites. The patient exhibited recovery after the procedures.

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Avaliação ultrassonográfica torácica em cães com efusão pleural e/ou pericárdica

Cited by 2 publications

References 6 publications

Breast Carcinoma with Pulmonary Metastasis in Armadillo (Eupharactus sexcinctus)

Breast Carcinoma with Pulmonary Metastasis in Armadillo (Eupharactus sexcinctus)

Dioctophymatosis as cause of dyspnea in a dog

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