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This article discusses the use of electrocardiography-gated non-helical CT angiography in the treatment of patent ductus arteriosus in a small breed dog. The study involved a 6-year-old Maltese dog, and the CT angiography was performed using a 320-row area detector CT. The non-helical method was chosen to overcome the limitations of the helical method and to select the best reconstructed image. The study found that electrocardiography-gated non-helical CT angiography was helpful in selecting an appropriate device option for closing the patent ductus arteriosus. [Extracted from the article]

A 9-year-old female neutered Weimaraner presented with a 2-month history of progressive right head tilt, ataxia and left temporal muscle atrophy. In humans, myxoid meningioma is rare and is a form of metaplastic meningioma, characterised by the proliferation of mesenchymal components, but MRI findings, treatment and outcome do not differ from those associated with typical types of meningioma. Impression smears predominantly consisted of individual round cells (histocytes and plasma cells), suggesting a round cell tumour, such as histiocytic sarcoma (Fig 1C), but the final histopathologic diagnosis was myxoid meningioma (Fig 1D). [Extracted from the article]

Arrow indicates the kidney in the pelvic cavity and arrowhead indicates rectal compression by the kidney. The renal artery to the left kidney starts level with the L6 and L7 vertebrae (arrowhead) and the renal vein from the left kidney ends level with L5 and L6 vertebrae (arrow). Several types of ectopic kidney have been reported in cats including simple ipsilateral/bilateral renal ectopia, complex ectopia and fusion of the kidneys. [Extracted from the article]

In this case, a surgical approach through the temporal bone underintraoperative ultrasound guidance allowed gross resection of the intraventricular tumour without postoperative complications. Postsurgical MRI revealed grossly complete resection of the mass lesion (Fig 1F). A metastatic tumour or high grade glioma - including anaplastic astrocytoma or glioblastoma - was suspected from MR spectroscopy, with decreased N-acetyl aspartate/creatine (Cr) and increased choline/Cr and lipids/Cr. [Extracted from the article]