Browsing by Author "Burdiles, Alvaro"

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    Aberrant subclavian artery
    (SOC CHILENA ANATOMIA, 2010) Inzunza, Oscar; Burdiles, Alvaro
    The anatomical variations involving the origin and passage of the right aberrant subclavian artery were studied, based on findings in a cadaver used for human anatomy teaching. In this case, the aortic arch gives rise to four separated branches, from right to left: right common carotid artery, left common carotid artery, left subclavian artery and right subclavian artery. From its origin, the right subclavian artery runs behind the trachea and esophagus, at the level of the third thoracic vertebrae, afterwards it reassumes its normal passage to the neck. The diameter of the aortic arch and its four branches were measured. In both vertebral arteries the diameter and distance from its origin in the subclavian arteries to the origin of the subclavian arteries were measured, with the purpose of analyzing potential important asymmetries. The probable embryologic explanations for this anomaly are discussed.
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    Diagnosis of bone lesions using image guided percutaneous biopsy
    (2006) Contreras, Oscar; Burdiles, Alvaro
    Background: Percutaneous biopsies have a good sensitivity and specificity for the diagnosis of bone lesions. Aim: To report the experience with 270 percutaneous bone lesions biopsies guided with fluoroscopy or computed tomography. Material and Methods: Retrospective review of the medical records of 270 patients (mean age 53.4 years, range 4 to 95 years; 134 female) subjected to a percutaneous biopsy of a bone lesion., guided either by computed tomography or fluoroscopy. 7-befinal analysis included the tumor type, tumor malignancy, tumor grade and complications of the procedure. Results: One hundred seventy nine lesions were malignant and 91 benign. Of the malignant lesions, 95 were metastatic and 84 were primary. In 3 cases, the initial diagnosis was a false negative (1.1%). Only one patient had a local hematoma after the procedure. Conclusions: linage guided percutaneous biopsy of bone lesions is a safe, effective, fast and economic procedure to obtain a pathological diagnosis of bone lesions.
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    Pediatric Bone Marrow MR Imaging
    (2009) Burdiles, Alvaro; Babyn, Paul S.
    This article provides an overview of the current use of MR imaging in the evaluation of pediatric bone marrow disorders, illustrating their appearance on commonly used MR imaging sequences. Recognition of normal developmental bone marrow changes and variants is important in pediatric MR imaging interpretation, and in selection of appropriate acquisition sequences. This overview should serve as a practical aid in the interpretation of bone marrow lesions in children.
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    Pediatric Bone Marrow MR Imaging
    (2009) Burdiles, Alvaro; Babyn, Paul S.
    This article provides an overview of the current use of MR imaging in the evaluation of pediatric bone marrow disorders, illustrating their appearance on commonly used MR imaging sequences. Recognition of normal developmental bone marrow changes and variants is important in pediatric MR imaging interpretation, and in selection of appropriate acquisition sequences. This overview should serve as a practical aid in the interpretation of bone marrow lesions in children.