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Biomedical subjects

C E Fiske

Publications and source records attributed to C E Fiske.

10 recordsLinked to original sources

The double sac sign of early intrauterine pregnancy: use in exclusion of ectopic pregnancy.

Pelvic sonograms from 61 consecutive patients with suspected ectopic pregnancy and an additional 17 proved ectopic pregnancy cases were reviewed retrospectively. Special attention was given to the appearance of the uterus and intrauterine fluid collections in the absence of a fetal pole. Criteria for the exclusion of an ectopic pregnancy were established, based on a specific morphologic appearance of the decidua seen in early normal intrauterine pregnancy. A "double sac" appearance of two concentric echogenic rims was consistently identified early in normal intrauterine pregnancies before the appearance of a fetal pole, and served as a good morphologic discriminator for the decidual cast of ectopic pregnancy. We think the double sac appearance is a helpful indicator for differentiating an ectopic pregnancy from an early normal intrauterine pregnancy.

Diagnosis, Differential

Pseudo-sludge.

The authors differentiate between the sonographic appearance to spurious echoes in the gallbladder (pseudo-sludge) and the similar appearance of echogenic bile.

Bile

Ultrasonographic evidence of gallbladder wall thickening in association with hypoalbuminemia.

Retrospective evaluation of 125 consecutive gallbladder sonograms was done to determine the conditions under which a thickened gallbladder wall is identified. The population studied included a large number of chronic alcoholics. Forty-two patients (Group A) had thickened (greater than or equal to 3 mm) gallbladder walls, while 48 patients (Group B) had walls of normal thickness. Forty patients in Group A had markedly depressed serum albumin levles, significantly lower (p less than 0.001) than albumin levels in Group B. Ten patients in Group B had cholecystitis, compared to two in Group A. The authors conclude that a thick gallbladder wall can be seen in severe hypoalbuminemic states in the absence of acute or chronic cholecystitis.

Acute Disease

Fluid collections ultrasonically simulating urinary bladder.

Large cystic masses or fluid collections may closely simulate the appearance of the urinary bladder on ultrasound examination. Because of this potential error in identification we retrospectively evaluated 100 cystic pelvic masses and fluid collections to determine how readily the urinary bladder was identified as distinct from the mass or fluid collection. Factors contributing to this confusion and techniques to avoid this potential pitfall are discussed.

Adult

Sonographic measurement of lateral ventricular width in early ventricular dilation.

Cerebral real-time ultrasound examinations from 35 high-risk premature newborn infants and 25 normal-term infants were reviewed for early signs of ventricular dilation. Measurements of the midbody lateral wall of the lateral ventricle to falx distance and ratio of this distance to the hemispheric width were obtained. Midbody lateral ventricular widths were also measured. Results indicate that displacement of the medial wall of the body of the lateral ventricle toward the midline is an earlier sign of ventricular dilation than is displacement of the lateral wall away from the midline.

Cerebral Ventricles