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Biomedical subjects

R C Sanders

Publications and source records attributed to R C Sanders.

At least 109 records · Page 6Linked to original sources
PubMed1982

Amniotic fluid.

Explore the source record for details and available documents.

Amniocentesis↗
PubMed1982

Sonographic findings in abdominal pregnancy.

The sonographic findings in four cases of abdominal pregnancy are described and compared with similar cases reported in the literature. The findings include demonstration of an empty uterus adjacent to the bladder, absence of myometrium around the fetus, unusual fetal lie, poor definition of the placenta, and relative oligohydramnios.

Adult↗
PubMed1982

Wilms' tumor versus neuroblastoma: usefulness of ultrasound in differentiation.

Wilms' tumor and neuroblastoma represent the two most common abdominal malignancies of childhood. Sonograms of 46 cases of neuroblastoma and Wilms' tumor were retrospectively reviewed. Wilms' tumor is usually fairly evenly echogenic or evenly echogenic, with discrete holes corresponding to areas of cystic necrosis. Neuroblastoma is usually quite heterogeneous, with irregular hyperechoic areas intermixed with less echogenic areas. A correct diagnosis was made in 23 of 26 "unknown" cases of Wilms' tumor and neuroblastoma on the basis of sonographic findings alone. This series included one case of Wilms' tumor arising outside the kidney and one case of neuroblastoma invading the kidney. Sonograms show relatively distinct patterns for the two tumors based on textural differences and will probably be most useful in those equivocal cases in which the site of tumor origin is uncertain.

Abdominal Neoplasms↗
PubMed1982

The sonographic "scar sign" in focal nodular hyperplasia of the liver.

The sonographic features of focal nodular hyperplasia of the liver as reported in the literature and nonspecific. However, a linear cluster of bright echoes was detected in the nodules of two of our patients with surgically proven focal nodular hyperplasia. Pathologically this finding correlated closely with the gross appearance of the characteristic fibrotic scar of focal nodular hyperplasia. When present, this "scar sign" should suggest the diagnosis of focal nodular hyperplasia, particularly in the typical clinical setting.

Adult↗
PubMed1982

Radiodensity of the proposed new penny.

In 1973 the United States Mint proposed replacing the bronze penny with a less expensive penny made of aluminum. Pediatricians and pediatric radiologists, by testifying that aluminum coins are difficult to see on radiographs, helped defeat that legislation. Now the Mint again proposes a less expensive penny, one made principally of zinc. This proposed penny is radiopaque and will be easily identified on radiographs.

Aluminum↗
PubMed1981

A comparison of ultrasonography and radiography in the localization of renal calculi: experimental and operative experience.

The capabilities of radiography (mammography film) and ultrasonography (7 MHz. probe) were investigated in cadaver kidneys. Stones of varying size and composition were studied. Clinically, 11 patients then were studied with intraoperative radiography and ultrasonography. Both techniques appeared to localize calculi more than 3 mm. with high consistency in cadaver kidneys and in patients. Real-time B scan ultrasonography is a rapid and accurate technique that has the ability to identify lucent calculi. When used in association with intraoperative radiography, intraoperative ultrasonography can be a great aid in the surgical removal of renal calculi.

Adult↗
PubMed1981

Radiological appearances of the xiphoid process presenting as an upper abdominal mass.

In three patients prominent, jointed xiphoid processes were confused with abdominal masses on clinical examination. In the first case, ultrasound showed acoustic shadowing at the site of the xiphoid extension. This was interpreted as a calcified abdominal mass prior to obtaining a lateral chest radiograph, which showed it to be a jointed extension from the normal xiphoid process. In the other two cases, the mass was recognized on ultrasound as a jointed xiphoid process. Awareness of this important normal variant can prevent unnecessary surgery.

Abdominal Neoplasms↗
PubMed1981

The obstructed uterus.

Eleven patients with an obstructed, fluid-filled uterus, due to carcinoma of the uterus or to its treatment by radiation therapy, were examined with computer tomography (CT) and/or ultrasound. It is important to recognize this abnormality to differentiate it from other causes of pelvic mass to ensure prompt treatment of pyometra, should it develop. Both CT and ultrasound reliably identified this condition and differentiated it from other pelvic masses.

Body Fluids↗