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T A Sos

Publications and source records attributed to T A Sos.

At least 91 records · Page 5Linked to original sources
PubMed1979

Pitfalls in the plain film evaluation of the thoracic aorta: the mimicry of aneurysms and adjacent masses and the value of aortography. Part I. Transverse aortic arch.

In five instances, transverse aortic arch aneurysms were found that had initially, clinically and radiographically, mimicked thoracic neoplasms. Transverse aortic arch aneurysms display a wide spectrum of presentation: they may be asymptomatic, or they may cause symptoms secondary to esophageal, bronchial, vascular, or neural compression within the mediastinum and so mimic neoplasms. Conventional radiography in four projections and tomography are important components of the diagnostic evaluation of middle mediastinal masses. However, because plain film analysis is unable confidently to distinguish selected uncalcified aortic arch aneurysms from neoplasms, thoracic aortography is essential to the diagnosis.

Adult↗
PubMed1979

Pitfalls in the plain film evaluation of the thoracic aorta: the mimicry of aneurysms and adjacent masses and the value of aortography. Part II. Descending thoracic aorta.

Distinguishing posterior mediastinal and pulmonary masses from aneurysms and tortuosity of the descending thoracic aorta may be difficult, as five such cases illustrate. Both the neoplasms and the aortic aneurysms or tortuosity can compress the same vital mediastinal structures; thus, they may give rise to the same symptoms. Because the plain film findings may also be similar, aortography is essential to their diagnosis.

Aged↗
PubMed1979

Fever and pulmonary thromboembolism.

Fever patterns associated with pulmonary thromboembolism have not been well characterized. Upon review of 35 consecutive patients with angiographically documented pulmonary emboli, fever was present in 24 patients; and in 20, it was attributed solely to pulmonary thromboembolism. Analysis of these cases indicates that high fever (temperature greater than 39 degrees C) due to pulmonary thromboembolism may occur early, and low-grade fever may continue for a week or more. Fever persisting beyond six days, however, especially with temperatures over 38.5 degrees C, should not be ascribed to pulmonary thromboembolism unless other causes have been carefully excluded. If the clinical setting and patient's findings are consistent with pulmonary thromboembolism, one should not be deterred from presumptively making this diagnosis and initiating therapy because of the presence of high fever.

Adult↗
PubMed1979

Calcified renal cell carcinoma: a clinical, radiographic and pathologic study.

A retrospective review from 1954 to 1977 revealed 17 patients with radiographically calcified renal cell carcinoma. Any calcified renal lesion, regardless of the characteristics of the calcification, must be regarded as suspicious for a malignant neoplasm. Calcified renal cell carcinoma appears to be a biologically distinct subgroup of renal parenchymal tumors. The angiographic diagnosis of these tumors often was difficult since most were either hypovascular or avascular. Most calcified renal parenchymal tumors were relatively large but tended to be localized and histologically well differentiated. These tumors were associated with a predicted 5-year survival rate of 77 per cent.

Adenocarcinoma↗
PubMed1979

Percutaneous iliofemoral angioplasty via the contralateral femoral artery.

Using a flexible balloon catheter, transluminal angioplasty of the lower extremities may be performed via a puncture of the contralateral extremity. Five cases which illustrate the usefulness of this technique are presented. It provides access to lesions not amenable to ipsilateral puncture, avoids the need to compress the dilated artery, and decreases the risk of significant hematoma formation.

Aged↗
PubMed1979

The radiologic and clinical aspects of calcified hypernephroma.

The radiologic, pathologic, and clinical findings were reviewed in 18 patients with calcified hypernephroma and 6 with calcified benign renal lesions. Our results suggest: (a) that the pattern of calcification in a renal parenchymal lesion is of little assistance in diagnosis; in this series, many hypernephromas had peripheral curvilinear calcifications, and most benign renal lesions had internal amorphous calcifications; (b) that no distinct angiographic pattern exists in calcified hypernephroma, and a spectrum ranging from avascular to hypervascular may be identified; and (c) that these tumors may behave more benignly than uncalcified hypernephroma (5-year survival 78%).

Abscess↗
PubMed1979

A modified technique for percutaneous insertion of biliary T-tube.

Following percutaneous removal of retained biliary calculi through a t-tube tract, a tube should be reinserted over a guide wire. Reinsertion usually is easy; however, if buckling occurs, a coaxial system consisting of a t-tube over a teflon dilator will give added stiffness, and the t-tube will advance easily into the common bile duct.

Aged↗
PubMed1979

Cinefluoroscopy in evaluating left ventricular contractility and aneurysms.

Cardiac cinefluoroscopy was performed immediately prior to biplane left ventriculography in 113 patients and the findings of two independent observers compared to the angiographically documented state of the left ventricle. The observers' interpretations were correct in 44% and 46% of studies, respectively; there were 41% and 24% false negatives and 24% and 29% false positives. The observers agreed in only 59% of cases. The results show that cinefluoroscopy for evaluation of left ventricular contractility is grossly inaccurate and should not be performed.

Cineradiography↗
PubMed1979

Arteriographic demonstration of spontaneous right coronary artery spasm in a patient with Prinzmetal's angina.

Coronary artery spasm may occur spontaneously during coronary angiography in patients with clinically documented or suspected Prinzmetal's angina. In other patients with Prinzmetal's angina, the spasm can be provoked by the administration of ergonovine. A patient with spontaneous spasm of the right coronary artery during coronary angiography is reported and some considerations for diagnosis and therapy of this entity is offered. Although intraoperative spasm has been reported in the cardiology literature, no such case has been described in the radiology literature.

Angina Pectoris↗
PubMed1978

Treatment of massive hemoptysis by combined occlusion of pulmonary and bronchial arteries.

Massive, life-threatening hemoptysis occurred in a patient with left upper lobe bronchiectasis secondary to old tuberculosis. Selective left bronchial arteriography showed extravasation of contrast medium in the bronchiectatic area. A marked decrease in hemoptysis occurred after selective left bronchial arterial embolization. Complete cessation of bleeding followed the inflation of a Swan-Ganz balloon catheter that had been placed in the left main pulmonary artery.

Aged↗
PubMed1978

Aortic dissection beginning in the abdomen.

Two cases of aortic dissection beginning in the abdominal aorta are presented, and the angiographic and surgical principles are discussed. Every effort must be made to identify the sites of all intimal tears at aortography and to excise or oversew these sites at surgery; otherwise, dissection may continue. If an intimal tear cannot be identified at aortography, we recommend initial conservative therapy unless the patient's clinical condition forces emergency surgery.

Aged↗
PubMed1978

Angiographic demonstration of complications resulting from the Waterston procedure.

The ascending aorta--right pulmonary artery anastomosis, originally introduced by Waterston as a palliative shunt to increase pulmonary blood flow in certain cyanotic congenital heart diseases, has been found to be associated with late complications in a significant number of cases. These complications include preferential distribution of most or all shunt flow to the right lung, narrowing or obstruction of the right pulmonary artery at the anastomotic site, increasing stenosis or atresia of the right ventricular outflow tract, hypoplasia of the left pulmonary artery, and obstruction of the shunt itself. A properly planned angiocardiographic study is the principal method of detection of these complications.

Adolescent↗
PubMed1977

Cranial and caudal augulation for coronary angiography revisited.

Several similar projections utilizing cranial and caudal angulation of the X-ray tube in various obliquities have been described recently for coronary angiography and left ventriculography. These views provide improved visualization of the proximal branches of the left coronary artery, the region of the crux of the right coronary artery, and the left ventricle in the left anterior oblique projection; structures which in the conventional projections are often superimposed on one another or are foreshortened. The confusing and conflicting terms--"oblique clockwise and anticlockwise table base turn," "half-axial," "angulated," "sit up," "caudo-cranial sagittal augulation," "cranio-caudal sagittal angulation," and "lordotic" projections--should be discarded in favor of the terms "cranial angulation projection" and "caudal angulation projection." The appropriate anterior, rather than the posterior obliquity should be used to refer to rotation of the patient, or the X-ray beam around his long axis.

Angiography↗
PubMed1977

Tomographic scintigraphy of regional myocardial perfusion.

Estimation of the extent of regional ischemia by scintigraphic methods has been hampered by the geometric constraints of two-dimensional imaging. Myocardial perfusion scintigraphy was performed using the Fresnel zone-plate tomographic camera after the injection of Tc-99m microspheres (20-40 micron) into a coronary artery. Coronary artery occlusion was performed in six dogs by embolization via a catheter guidewire system. Twenty milicuries of Tc-99m microspheres were injected into the left main coronary artery of the six occluded and three unoccluded dogs. Scintigraphy was performed in multiple projections in the living animal. Optical reconstruction of the holographic image provided tomographic gamma images of the heart. Scintigraphy was also performed with an Anger camera for comparison. The extent of the perfusion defect was measured by planimetry and expressed as a percentage of the ventricular area in that projection. The average of the right and left anterior oblique projections provided the most accurate estimate of the size of the perfusion defect (average error: 13.6%; range: 0-38.2%). Fresnel zone-plate imaging provided an accurate in vivo assessment of the extent of altered myocardial perfusion.

Animals↗
PubMed1976

Spurious complete obstruction of the inferior vena cava in an adult as a result of the Valsalva maneuver.

The authors describe a case of spurious complete obstruction of the inferior vena cava in a 60-year-old man, which proved to be the result of a Valsalva maneuver. It is recommended that if an apparent abnormality is noted on supine inferior vena cavography, the position of the patient be changed and additional films obtained in different projections without the Valsalva maneuver.

Humans↗