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Biomedical subjects

C Cole-Beuglet

Publications and source records attributed to C Cole-Beuglet.

At least 37 records · Page 2Linked to original sources
PubMed1983

Ultrasonographic findings in placenta increta.

Placenta increta, invasion of the myometrium by normal placental (chorionic) villi, can be life-threatening to a mother at delivery. In two reported cases of pathologically proven placenta increta, the abnormal areas were retrospectively identified on ultrasonographic images. In both cases, there was consistent focal obliteration of the hypoechoic retroplacental zone by either tissue of echogenicity similar to that of the normal placenta or tissue of slightly decreased echogenicity. This was found to represent extension of the villi through the decidua basalis into the myometrium. The spectrum of non-malignant invasive placentas and the specific ultrasonographic findings that should allow prospective diagnosis are discussed.

Decidua↗
PubMed1982

Further evaluation by ultrasound of mammographically determined breast dysplasia.

Evaluation of 135 consecutive patients was made for breast masses by the same surgeon and the patients were subsequently referred for ultrasound mammography of the breast after xeromammography revealed a "dysplastic" (DY) pattern only, with no evidence of malignancy. Three patients had carcinoma of the breast detected by ultrasound mammography that had been missed by xeromammography. Two of the three cancers were similarly diagnosed by fine-needle aspiration cytology. All patients with a normal ultrasound examination have now been followed for a minimum of 15 months without evidence of developing breast cancer. This study confirms the importance of using additional diagnostic modalities for evaluating patients with dysplastic breasts and strongly suggests the value of ultrasound mammography in this group of patients.

Adult↗
PubMed1982

Clinical experience with a prototype real-time dedicated breast scanner.

The evaluation of 1,003 sonomammographic examinations on a predominantly symptomatic population using a prototype real-time dedicated breast scanner is presented. Interpretations were initially made by one of four experienced radiologists without knowledge of clinical data (i.e., symptoms, age, physical findings, or other imaging modality interpretations). A second interpretation was subsequently made with this information. Pathologic confirmation was available on 262 lesions, including 71 carcinomas and 191 benign biopsies. Of the carcinomas, 19 were smaller than 2.0 cm in diameter. The sensitivity of sonographic detection of breast cancer on initial readings was 0.76 and on second readings with clinical data was 0.85. The specificity for a benign reading on sonography was 0.80 on initial interpretation and 0.81 on the second interpretation.

Adolescent↗
PubMed1982

Ultrasound mammography for male breast enlargement.

Fourteen men referred for ultrasound evaluation of breast enlargement had ultrasound mammography using water path techniques. Gynecomastia, both the localized type and the diffuse type, could be differentiated from the normal soft tissues of the chest wall on the B-scans. Among nine cases of men who underwent excision, there were six cases of gynecomastia, two lipomas, and one biopsy revealed normal subcutaneous tissue. The ultrasound B-scan images are correlated with the histologic findings in these nine cases. Ultrasound mammography using water path techniques is a useful imaging examination for male breast enlargement.

Adult↗
PubMed1981

Normal left renal vein mimicking left renal artery aneurysm.

On transverse ultrasound scans a small number of patients with a paucity of retroperitoneal fat show an initial false impression of a left renal artery aneurysm due to the confluence of two normal findings. The left renal vein is unusually prominent from the hilum of the left kidney to the area between the superior mesenteric artery and the aorta; and part of the normal aortic wall, adjacent to the left renal vein, is incompletely imaged. Explanations for the prominence in the left renal vein and the partial visualization of the aortic wall are discussed, and various maneuvers that allow for accurate identification of both are described. The use of this analysis should prevent the incorrect diagnosis of a left renal artery aneurysm, which might lead to more invasive diagnostic procedures.

Aneurysm↗
PubMed1981

Ultrasound mammography: a comparison with radiographic mammography.

The results of 1,029 ultrasound B-scan examinations of the breast using two automated water-path scanners were correlated with histopathology data in 278 patients who had undergone biopsy. Of the 1,029 patients, a subgroup of 709 patients had both ultrasound mammograms (USM) and radiographic mammograms (XRM) obtained. A sensitivity for breast cancer of 69% was found for USM and 74% for XRM on initial independent readings when there was no knowledge of clinical data. These are not statistically different using the McNemar test for paired comparisons. When the USM were reinterpreted with the knowledge of the patient's age, history, physical examination, and, when available, the XRM interpretation, the USM sensitivity for breast cancer was 79%.

Adolescent↗
PubMed1981

Echogenicity: analysis, significance, and masking.

Echogenicity can be created by the admixture of any acoustically dissimilar substances. Experiments performed in vitro using mineral oil and water and in vivo examining 24 pathologically proven echogenic abnormalities show that echogenicity cannot be ascribed to a specific tissue, but rather is a property of all substances. In addition, when dissimilar histologic and pathologic substances have similar echo appearances and are adjacent, they become indistinguishable. This loss of structural definition can be termed the sonographic "masking sign," comparable in masking qualities to the established radiographic "silhouette sign." When this phenomenon occurs, an abnormality can be detected only through displacement of an organ or distortion of its internal anatomy. A thorough understanding of echogenicity and the sonographic masking sign will allow a more accurate evaluation of masses and infiltrating processes.

Humans↗
PubMed1980

Ultrasound criteria for in utero diagnosis of microcephaly.

Microcephaly (small head) is clinically important only if there is concomitant micrencephaly (small brain). Extensive studies on patients in mental institutions have shown that there is close correlation among microcephaly, micrencephaly, and mental retardation when the head is more than three standard deviations below the norm. If the small head is less than two standard deviations below the norm, no strong correlation exists with eigher small brain or mental retardation. High-resolution ultrasound permits imaging of the fetal head in utero, allowing accurate evaluation of head size and detection of intracranial anomalies. The microcephalics detected in utero over a 2-year period form the basis of this series, showing close correlation with the known clinical data on children with microcephaly. An approach to ultrasound detection and evaluation of fetal microcephaly is proposed.

Female↗
PubMed1980

Real-time aspiration-biopsy transducer.

In vitro and in vivo experience with a real-time aspiration-biopsy transducer indicates that the advantage of this instrument is that it permits the examiner to monitor the movement of the structure being aspirated or biopsied, as well as the movements of adjacent organs, while the needle tip is being inserted into the structure. When the needle tip is inserted into the skin, a strong acoustic shadow is produced along the path of the needle, indicating the optimum position for aspiration and biopsy. Within fluid-filled areas the needle tip is imaged consistently. For shadow path of the needle can be consistently observed, but the needle tip is recorded with more difficulty.

Amniocentesis↗
PubMed1980

Analysis of biparietal diameter as an accurate indicator of gestational age.

To date, there have been 25 studies attempting to correlate biparietal diameter and gestational age; of these, 17 meet specific criteria and thus are included in this evaluation. Although all studies have shown an increase in biparietal diameter with advancing gestational age, between 17 wk and term there is a discrepancy of approximately 3 wk. In this evaluation the charts are compared and the variations analyzed. An ideal table is constructed by combining the mean gestational age, calculated from a statistical analysis, and the variation at each millimeter point, determined by comparison of all the studies. It is hoped that this new 90% composite table, which consists of a range of gestational ages in weeks for each biparietal diameter, will not only provide more realistic indications of fetal age but also will serve as a reminder to sonographers, obstetricians, and patients of the relative accuracy and variations of biparietal diameter measurements.

Cephalometry↗
PubMed1980

Ultrasound findings in hepatitis.

A retrospective study of ultrasound images of the liver in patients with hepatitis was undertaken. Two distinct ultrasound patterns were detected. In acute hepatitis, the predominant findings were accentuated brightness and more extensive demonstration of the portal vein radicle walls and overall decreased echogenicity of the liver. Chronic hepatitis primarily revealed decreased brightness and number of portal vein radicle walls and verall increased liver echogenicity. In addition, the pathological severity closely paralleled these ultrasound patterns. A prospective study confirmed the same acute hepatitis ultrasound findings with close correlation to the clinical severity. These distinct ultrasound patterns will help to evaluate patients with suspected acute and chronic hepatitis and more accurately define intrahepatic causes of jaundice.

Acute Disease↗