Biomedical subjects
Publications and source records attributed to M Abaskaron.
Magnetic resonance imaging has proven to be useful in the diagnosis of spinal cord pathology. Little has been written in the literature concerning magnetic resonance imaging of acute transverse myelitis. A case of magnetic resonance imaging of acute transverse myelitis in a young man with known systemic lupus erythematosus is presented along with a review of the radiographic approach to transverse myelitis.
Bone marrow necrosis is most frequently diagnosed at postmortem examination. Antemortem diagnosis is still uncommon. We illustrate four cases where initial bedside attempts at needle aspiration and biopsy of primary and metastatic tumor tissue from the sternum were complicated by inadequate specimen retrieval secondary to marrow necrosis and/or tissue destruction by tumor. In these cases, CT guidance was useful in the precise localization of the bulk of the tissue mass and consequently the successful retrieval of adequate diagnostic specimens. We demonstrate CT guidance as an excellent and convenient alternative in circumstances where adequate marrow aspirations and biopsies are difficult and complicated.
I have presented the case of a 20-year-old woman with tuberculous pseudoaneurysm of the innominate artery associated with another pseudoaneurysm of the abdominal aorta. I believe this is the first report of such a case in the literature.
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Embolization of a fragmented catheter in the vasculature is a serious complication. In two patients with catheter fragment emboli, one in the pulmonary artery and one in the right jugular vein, a nonsurgical technique was effective in removing the fragments. Because nonoperative techniques are simple, safe and cost-efficient, they should be considered the method of choice for managing this complication.
A case is reported of a patient with rapidly accumulating urinary ascites who was successfully treated by embolic ablation of renal function. The appropriate literature is reviewed.
In two patients with retroperitoneal fibrosis computerized tomography was used for diagnosis and/or postoperative follow-up. Methyldopa (Aldomet) is postulated as the causative agent in one case; the second is idiopathic.
An anterior mediastinal haematoma and left haemothorax developed in a hypertensive diabetic patient on oral anticoagulant therapy. This occurred in spite of well-controlled anticoagulation and the absence of other evidence of systemic bleeding. Angiography and daily chest X-ray follow-up were not only sufficient to confirm the diagnosis, but also avoided hazardous interventional procedures.
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Four additional holes are made in a pigtail catheter used for the aorto-ileo-femoral examination. Better visualization of the peripheral vessels and increased exposure timing accuracy result.
A case of hepatocellular carcinoma obstructing the hepatic portion of the inferior vena cava by extrinsic compression demonstrated on computerized tomography is presented. To our knowledge, only one previous case has been reported which demonstrates actual invasion of the inferior vena cava by hepatic tumor. The signs of obstruction include: nonvisualization of the intrahepatic portion of the IVC, dilatation of the infrahepatic IVC with paravertebral venous collaterals and lack of changes in the diameter of the IVC after Valsalva maneuver.