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Biomedical subjects

F Weill

Publications and source records attributed to F Weill.

At least 73 records · Page 4Linked to original sources
PubMed1978

[The ultrasonic diagnosis of jaundice. 199 cases (author's transl)].

Thank to a thorough ultrasonographic analysis of biliary tree ("shotgun sign"), liver and pancreas, a positive diagnosis of obstruction was carried out in 92% of cases. The success rate in diagnosis of level of obstruction was also 92%. Aetiologic diagnosis was successful in 61% of cases only (almost 100% in jaundices of pancreatic origine). No false positive diagnosis of obstruction was made in non-obstructive jaundice. This enabled to carry out instrumental cholangiography (i.e. "skinny" needle percutaneous cholangiography, and ERC) only in case of clinical, biological and sonographic discrepancies, or in hilar obstructions.

Bile Ducts, Intrahepatic↗
PubMed1978

Ultrasonic study of the normal and dilated biliary tree. The "shotgun" sign.

With the advent of real time scanners, segments of the normal biliary tree can now be seen regularly. Normally, the biliary junction is narrower than the portal vein or the portal division. With early dilatation of the bile ducts the diameters of the two systems tend to equalize. Thus, the presence of two parallel ducts with similar diameters is pathologic. As the dilatation of the biliary tree progresses, the portal system may become flattened, thus reversing the initial proportion between the diameter of the biliary junction and that of the biliary tree.

Bile Ducts↗
PubMed1978

[Ultrasonography in jaundice: signs and results in 199 cases (author's transl)].

Ultrasonic patterns of bile ducts dilatation were studied in 199 cases. In the most recent series of obstructive jaundices (50 cases) examined with a high resolution machine, the diagnosis of dilatation was made in 92% of cases, the diagnostic of level of obstruction in 92% of cases, and the diagnosis of cause of obstruction in 61% of cases (but in 22 out of 23 jaundices due to a pancreatic lesion: 95%). No false positive diagnosis was made in non obstructive jaundice. Improved technology had a definite impact on the quality of results.

Bile Ducts↗
PubMed1977

Ultrasonography of the normal pancreas. Success rate and criteria for normality.

Study of 135 ultrasonograms shows that it is possible to display the normal pancreas with 82% success. The pancreatic head ranges between 11 and 30/mm/in thickness, the isthmus 4-21 mm in thickness, and the corporeo-caudate area 24-32 mm in thickness. The pancreas may have a sausage, dumb-bell, or tadpole shape. Variance from these outlines and thicknesses should be considered pathological.

Acute Disease↗
PubMed1976

Ultrasonic visualization of an umbilical vein.

A patent umbilical vein was demonstrated via ultrasound in a patient with portal hypertension. Ultrasonographic differential diagnosis of intra- and juxta-hepatic veins is given, with emphasis on real time ultrasonography.

Aged↗
PubMed1976

[Ultrasonic aspects of abdominal abscesses and hematomas].

Abdominal ultrasonography often enables to display the fluid collection of an abcess or haematoma. This type of diagnostic procedure is most useful in a post-operative period. The intestinal gases which stop the ultrasonic beam may be responsible for diagnostic failures. Positive results, which are the most frequent, are never the less precious to assess and decide a treatment policy.

Abdomen↗
PubMed1976

A study of thirty right hepatic arteries.

Thirty right hepatic arteries discovered among 137 celiomesenteric angiographies show the high frequency (22%) of this variation. Radiologic anatomy of the right hepatic artery was discussed; with the exception of one atheromatous stenosis, the pathologic findings of the right hepatic artery and its terminal branches illustrate the development of a regional disease (12 cases or 40%). This assumed pathology is divided half in pancreatic causes (neoplasm, pancreatitis, pseudocysts) and half in hepatobiliary causes (metastatic cancer of the liver, cancer of the hilus, cirrhosis, hydatid cyst, alveolar echinococcosis or angioma). Five times the surgical technic was modified because of the right hepatic artery. Since these observations were made, we are studying the consequences of this hepatic artery over surgical technics and the approach to the various segments of this artery.

Adult↗
PubMed1976

[Large non-secreting islet cell adenomas. Review of the literature].

The authors report a case of benign non secretory islet cell tumour. Ten other cases of this type were found in the literature. These non-functional tumours évolve without symptoms and are rarely diagnosed in the presence of an abdominal mass. They are usually discovered at autopsy. Clinical examination and further investigation do not always demonstrate the pancreatic origin of the tumour observed. Treatment is surgical consisting of removal of the tumour. Pathological examination leads to the diagnosis of non-secretory islet cell tumour which is usually benign; only the course can confirm this.

Adenoma, Islet Cell↗
PubMed1976

[Hepatic echo-angiostructure: echo-anatomical study of the intraparenchymatous canal structures (author's transl)].

Hepatic echo-angiostructure: echo-anatomical study of the intraparenchymatous canal With a suitable technique (real time, grey scale) hepatic ultrasonography is able to display intraglandular ductal elements: portal veinous network, supra-hepatic veinous network, and, if enlarged intrahepatic biliary tree. A careful echoanatomic study is necessary to identify the enlarged biliary network in case of obstructive jaundice; such a study is also necessary not to confuse normal ductal structures, insufficiently displayed, with pathological reflections - a rather frequent hazard with conventionnal techniques.

Bile Ducts, Intrahepatic↗
PubMed1976

[Irradiation in radiodiagnosis: recent possibilities of decreasing the doses (author's transl)].

Depending on the film used, the new super-fast re-enforcing screens enable a four to six fold reduction in diagnosis cutaneous irradiation. This diagnosis irradiation which remains rather considerable under classical techniques, is frequently injustly neglected: the distribution of this new type of material seems desireable. On the contrary, the use of xeroradiography leads to an irradiation which is three times greater than in conventional techniques and fifteen times greater than in these new techniques: xeroradiography must therefore be reserved for very specific problems.

Humans↗