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Biomedical subjects

J Struyven

Publications and source records attributed to J Struyven.

At least 109 records · Page 6Linked to original sources
PubMed1987

Sonographic demonstration of portal venous system thromboses secondary to inflammatory diseases of the pancreas.

Sonographic demonstration of abdominal venous thromboses subsequent to pancreatic benign inflammatory diseases has been seldom reported up to now. Seven cases of thromboses of the portal venous system associated with acute or chronic pancreatitis are reported. All cases were detected by sonography in patients without clinical manifestations of portal hypertension. Echogenic thrombus within the lumen of the vein was observed only in the short-term follow-up of acute pancreatitis. Cavernomatous transformation was observed in 6 patients with long-term calcifying pancreatitis. Extrinsic compression by pseudocyst of the pancreas was observed in only 1 case. In all the other cases, thromboses seems to be secondary to local inflammatory phenomena during previous episodes of acute pancreatitis.

Acute Disease↗
PubMed1987

Hepatic artery aneurysm: CT and MR features.

The authors report a case of common hepatic artery aneurysm diagnosed by computed tomography (CT) and magnetic resonance (MR). Features of both techniques are described and discussed. The surgical and radiologic literature is reviewed.

Aneurysm↗
PubMed1987

Transitional cell papillary carcinoma of the bladder in a child.

We report a rare case of transitional cell papillary carcinoma of the bladder in a 10-year-old girl who had hematuria. The tumor was diagnosed and assessed through VCUG and ultrasound. The tumor protruded into the urethra during micturition and its mobility was observed by both diagnostic procedures.

Carcinoma, Papillary↗
PubMed1987

The effect of papaverine on arterial and venous hemodynamics of erection.

The aim of this study was to establish how much of the erectogenic effect of papaverine is due to arterial dilatation and how much to venous obstruction during artificial erection. Three consecutive cavernosographies were done on each of 10 psychogenic impotent patients: a baseline run without papaverine; a run with papaverine (60 mg. intracavernously) after occlusion of arterial supply to the corpora cavernosa with balloon catheters inflated at the origin of the hypogastric arteries; and a third run after restoring arterial blood supply to the corpora. The measured flow rates indicated that during cavernosography in papaverine-induced erection, the major effect of papaverine is to increase the resistance to venous outflow from the corpora cavernosa.

Adult↗
PubMed1987

The erectile angle: objective criterion to evaluate the papaverine test in impotence.

Intracavernous papaverine injection may be the first diagnostic step in the assessment of the impotent patient. However, the appreciation of its effect must rely on the evaluation of penile rigidity. Since measurement of rigidity requires a sophisticated procedure that may not be available to the majority of practitioners, we attempted to find a simple and objective method to evaluate the results of this common test. We tested 50 patients complaining of impotence with intracavernous injection of 60 mg. papaverine. The length and circumference of the penis were measured before and after papaverine injection. The rigidity was determined by measuring the angle between the penis and the legs with the patient in the standing position. Afterwards, each patient underwent vascular (Doppler ultrasound and cavernometry) and neurological examinations. A total of 27 patients with no vascular abnormalities had an erectile angle of 96 degrees (range 90 to 130 degrees), while 23 patients had some vascular disorders (9 arterial lesions, 8 venous leakage and 6 combined lesions) and an erectile angle of 36 degrees (range 0 to 60 degrees). There was no significant difference between the groups in the increase of length and circumference of the penis after intracavernous injection of papaverine. The papaverine test can distinguish between patients with vascular and psychogenic problems. A negative papaverine test associated with a normal Doppler examination is characteristic of venous leakage. Measurement of the erectile angle after intracavernous injection of papaverine with the patient in the standing position is a simple, objective and reliable method to evaluate patients with vascular impotence.

Adult↗
PubMed1987

Comparison of iohexol and ioxaglate for intravenous digital subtraction angiography of the neck and head.

Two hundred patients undergoing intravenous digital subtraction angiography of the cerebral circulation were examined on a random basis with either iohexol 350 mg I/mL or ioxaglate 320 mg I/mL. The two low osmotic media provided equally satisfactory image quality and diagnostic possibilities. No significant differences were found in incidence and severity of adverse reactions.

Carotid Arteries↗
PubMed1987

Total parenteral nutrition (TPN) and gallbladder diseases in neonates. Sonographic assessment.

During a 1-year period, a prospective ultrasound (US) study of the biliary tract was performed in 41 neonates receiving total parenteral nutrition (TPN). Gallbladder sludge appeared in 18 neonates (44%) after a mean period of 10 days of TPN. The occurrence of this abnormality seems related to three main factors: prematurity with immaturity of the enterohepatic circulation of bile acids, duration of TPN, and lack of enteral nutrition. In five neonates (12%), an evolution of sludge to "sludge balls" was observed. Two neonates (5%) went on to develop uncomplicated gallstones and a spontaneous resolution occurred in one of them 6 months after the examination. This finding suggests conservative management in such cases. However, since cholecystitis or biliary tract obstruction are classical complications in older children, a US survey of neonates receiving TPN is useful to follow the abnormal gallbladder content, and rapid introduction of enteral feeding is advisable.

Cholelithiasis↗
PubMed1987

[Prostatic pathology imaged by magnetic resonance. 58 cases].

Forty-eight patients with prostatic disease (benign prostatic hyperplasia (B.P.H.), carcinoma, cysts, myoma and prostatitis) and 10 normal volunteers underwent magnetic resonance imaging (M.R.I.) of the prostate. The prostatic parenchyma was best evaluated by a T2-weighted spin-echo pulse sequence. The prostate in patients with B.P.H. often had a homogeneous or more rarely a nodular appearance on T2-weighted images. In most cases, a peripheral dark rim is observed. All prostate in patients with carcinoma had an heterogeneous appearance on T2-weighted images. While most of the prostatic carcinomas appeared hypo-intense relative to adjacent prostatic parenchyma, some of the neoplasms had a high or mixed-high and low signal. The myoma showed a low-signal nodule like carcinoma. The cyst appears as a liquid tumor. The prostatitis had an homogeneous bright signal. With the used methodology, MRI can differentiate prostatic diseases in many cases. Nevertheless the technique has to be optimized to improve its accuracy.

Cysts↗
PubMed1987

[Leiomyoma of the prostate. Appearance on the MRI. Apropos of 2 cases].

Two cases of leiomyoma of the prostate are reported. They are the first studies by M.R.I. Based on the results of M.R.I. of these lesions, differential diagnosis with malignant processes of the prostate is discussed. Associated with a benign prostatic hypertrophy, the leiomyoma must be distinguished from additional neoplasm.

Aged↗
PubMed1987

[Magnetic resonance imaging, with surface coil, of a transplanted kidney].

MR appearance of the kidney transplant is evaluated on a series of 80 examinations performed on a supraconductive unit operating at 0.5 T. Normal function kidneys displayed a clearly delineated corticomedullary differentiation (CMD); the ratio between the thickness of cortex and medulla didn't exceed 0.6. The same appearance was observed in non complicated acute tubular necrosis. Complete loss of CMD was the major finding in acute rejection (74% of the cases), but it was not specific as it was also observed in chronic rejection and in acute glomerulonephritis. Cortex thickening was helpful for the detection of rejected transplants with visible CMD. The sensitivity of MR in the detection of acute rejection was 94%. Specificity of MR findings for acute rejection depended on the transplant age: it varied from 100% for examinations performed during the first 3 months after transplantation, to less than 50% for examinations of the second year.

Acute Disease↗