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Biomedical subjects

A Scherrer

Publications and source records attributed to A Scherrer.

At least 91 records · Page 5Linked to original sources
PubMed1983

[Irregular hepatic steatosis. Ultrasonic and computed x-ray tomographic aspects].

A 39-year-old moderately obese and alcoholic man complained of abdominal pain and nausea. An ultrasound examination of the liver showed large hyperechoic areas surrounding a limited pseudotumorous zone of relatively decreased echogenicity. CT scan showed a decreased density (35 UH) in the hyperechoic areas, suggesting fatty liver which was confirmed histologically; conversely, the hypoechoic area appeared normal on CT scan. Six months later, after reduction of caloric intake and cessation of alcohol ingestion, ultrasound examination and CT scan of the liver were normal.

Adult↗
PubMed1983

[Is the preparation of barium enema a sound preparation for echography?].

Findings were compared of examinations in 50 patients not specially prepared and 50 patients placed on a non-residue diet and receiving pre-radiological preparation before barium enemas. Visibility of the pancreas and the global quality of images were improved in patients previously prepared, but not to a sufficient degree to justify its routine use.

Barium Sulfate↗
PubMed1983

[Echography in the pretherapeutic evaluation of esophageal cancers. Apropos of 102 cases].

A retrospective study was undertaken of abdominal echography in mode B with manual scanning in assessing the spread of 102 carcinomas pf the oesophagus. This showed echography to be reliable in the diagnosis of hepatic metastases (accuracy of method = 93%), ineffective in detecting coeliac lymph node involvement and specific in the recognition of fatty infiltration and steatofibrosis of the liver. However, with regard to hepatic metastases, the existence of false positives and false negatives, even few in number, was such that echography could not influence final decisions as to treatment. The authors feel that histopathological proof in doubtful cases by cytological puncture using a fine needle would avoid false positives and thus give echography its full value.

Esophageal Neoplasms↗
PubMed1983

[Atelectasis caused by lung folding].

An atypical disturbance of ventilation supervening a pleural effusion may occur due to atelectasis by lung folding which is seen radiologically as a round image close to the chest wall with the appearance of a pseudo-tumour. The authors review the mechanisms and the clinical and radiological presentation of this disorder based on 7 cases and a review of the literature. The posterior basal type with adhesions to the chest wall are the most frequent. An intra-parenchymatous and a double-form are described. The diagnosis of this benign disorder is radiological. It is based on a characteristic displacement of the vessels and bronchi and associated pleural signs. Recognition of these signs avoids all invasive procedures.

Adult↗
PubMed1983

[Radiological picture and surveillance of nontraumatic aortic dissections of the descending aorta].

A retrospective study of 32 cases of acute dissecting aneurysms of the aorta forms the basis for further discussions on the role of arteriography. This is the only examination enabling full visceral investigation in type B dissecting aneurysms (affecting the descending aorta only) treated medically. The possible need for revascularization surgery will depend upon the results of this investigation, the type of arterial lesions affecting the visceral branches being determined by assessment of visibility of arteries in relation to the true and false lumen.

Aortic Dissection↗
PubMed1977

[Is the presence of air in the small intestines pathological (author's transl)].

The authors examined 119 patients coming to the Radiological Department for various reasons excluding all abdominal pathology: road traffic accidents, rheumatological pain, oto-rhino-laryngological or ophthalmological causes. Two observers, working separately but comparing their results, concluded that there was air in the small intestines in 51 % of the patients, and that the presence of air in the small intestines was considerable in 6 % of the patients. The presence of air in the small intestines was noted in 40 % of outpatients and in 70 % of patients in bed.

Adolescent↗
PubMed1977

[Operative therapy of hyperhidrosis axillaris (author's transl)].

Development and problems connected with the surgical treatment of hyperhidrosis are considered. 32 patients were operated according to the method of Préaux. The results are good, both cosmetically and with regard to the diminution of the excessive sweat production.

Axilla↗
PubMedDate not supplied

MR imaging of the liver: effect of portal hypertension on hepatic parenchymal enhancement using a gadolinium chelate.

The purpose of this study was to prospectively investigate the extent to which reduced portal blood flow in patients with hepatic cirrhosis and portal hypertension affects hepatic parenchymal enhancement during gadolinium-chelate-enhanced dynamic MR imaging. Breath-hold three-dimensional (3D) spoiled gradient-recalled echo (GRE) MR imaging technique obtained after intravenous administration of a gadolinium chelate was used to measure hepatic parenchymal enhancement and time to peak enhancement in 20 patients with hepatic cirrhosis and clinical evidence of portal hypertension (group 1) and in 20 control subjects without portal hypertension (group 2) who were matched for age, sex, and body weight. Mean peak hepatic enhancement values +/- SD and times to peak enhancement +/- SD were determined for both groups of patients. Mean peak enhancement value (+/-SD) was 78.7% +/- 36.2 in group 1 and 91.6% +/- 46.2 in group 2 (not significant). However, in the nine patients in group 1 with splenomegaly, mean peak enhancement value was 61.3% +/- 14.4, whereas it was 93.0% +/- 42.7 in the 11 patients without splenomegaly (P < .05). Mean time to peak enhancement was 84 seconds +/- 23 in group 1 and 54.0 sec +/- 25.0 in group 2 (P < .01). Our results show that mean peak enhancement value of hepatic parenchyma after intravenous administration of a gadolinium chelate is significantly altered for patients with portal hypertension and splenomegaly. In addition, the time to peak enhancement is delayed significantly when portal hypertension is present. Thus, it is possible that the optimal time for imaging the liver during the portal phase must be tailored to the status of the portal system of the patient.

Adult↗
PubMedDate not supplied

Hepatic pseudolesion around the falciform ligament: prevalence on CT examination.

BACKGROUND: The purpose of this study was to determine the prevalence of hepatic pseudolesions seen around the falciform ligament on computed tomography (CT) of the abdomen obtained with intravenous administration of contrast material. METHODS: We first retrospectively reviewed the CT scans of six patients in whom hepatic pseudolesions were seen around the falciform ligament. The abdominal CT scans of 587 patients were then prospectively analyzed for the presence of hepatic pseudolesions around the falciform ligament to determine the prevalence of this finding on CT examinations. RESULTS: CT scans in the first six patients showed two types of hepatic pseudolesion around the falciform ligament. In three patients, hepatic pseudolesions were focal spared areas in fatty liver. In three patients, hepatic pseudolesions were developed in nonfatty liver. Prospectively, hepatic pseudolesions were found on five of 587 CT examinations (prevalence = 1%). A single hepatic pseudolesion was found in segment 4 on two examinations. Two hepatic pseudolesions (one in segment 4 and one in segment 3) were found together on three CT examinations. CONCLUSION: Hepatic pseudolesions around the falciform ligament are seldom seen on CT scan. However, recognition of these pseudolesions is crucial because they may be interpreted as true tumors.

Adult↗