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Biomedical subjects

M Viamonte

Publications and source records attributed to M Viamonte.

At least 73 records · Page 4Linked to original sources
PubMed1975

Why every renal mass is not always a surgical lesion, the need for an orderly, logical, diagnostic approach.

The fact that approximately 95 per cent of asymptomatic renal masses are benign is a compelling reason for the streamlined diagnostic approach which is described herein. Within the confines of these guidelines for the study of renal masses, when proceeding from simple to complex methods of evaluation, one should always consider the age of the patient, the status of the cardiovascular system, the radiologic appearance of the mass on drip infusion nephrotomography and the results of renal echography as qualifying determinants and then propose the logical sequence of individualized studies under the best possible circumstances.

Angiography↗
PubMed1975

Effect of intracystic pantopaque on renal cysts.

Intracystic pantopaque can alter the natural history of renal cysts. More than two-thirds of all renal cysts treated with percutaneous intracystic instillation of pantopaque decreased to at least half the original volume when followed for up to 4 years. A similar control group without intracystic pantopaque instillation did not show this dramatic change.

Contrast Media↗
PubMed1975

Selective catheterization of the portal vein and its tributaries. Preliminary report.

The portal vein and its tributaries were selectively catheterized in 90 patients. Only one complication required surgery. This technique not only provides information about the status of the portal circulation and liver parenchyma but can also be used in the treatment of bleeding esophageal varices by selective embolization of autologous clots or inert material.

Catheterization↗
PubMed1975

Percutaneous management of renal cysts: results of a four-year study.

A standardized technique for percutaneous therapeutic management of renal cysts is described. After partial aspiration of the cyst fluid, the fluid is replaced with Pantopaque, Renografin 60 and air. Fifty-six renal cysts so treated were followed at intervals of up to four years and 68% showed a 50% or more decrease in cyst volume. Only 13% of a control group of 15 renal cysts which were percutaneously punctured but did not have Pantopaque instilled showed a 50% or more decrease in cyst volume. The results suggest that instillation of Pantopaque into a renal cyst can alter the natural history of the cyst by causing it to decrease in size.

Contrast Media↗
PubMed1975

The deceptive aortic root.

Coronal, horizontal, and sagittal sections through the mid-line are excellent ways of depicting the anatomical position of the aortic root and for studying its topographical relationship to the surrounding vascular structures. Minimal radiographic abnormalities or no abnormalities at all may be present with an enlarged ascending portion of the thoracic aorta. Thus, frontal chest roentgenograms obtained with high kilovoltage, fluoroscopy and left anterior oblique projections should be utilized routinely for the evaluation of the ascending aorta. Calcification of the aortic valve and of the coronary arteries and the study of aortic valve prosthesis also demand a dynamic study and the use of complementary views, such as lateral and both oblique projections.

Aorta, Thoracic↗