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Biomedical subjects

D Van Gansbeke

Publications and source records attributed to D Van Gansbeke.

At least 37 records · Page 2Linked to original sources
PubMed1995

[Spiral tomodensitometry of pancreatic calcifications].

Chronic pancreatitis is characterized by the formation of intraductal precipitates that may later grow and calcify, forming large stones. These calcified stones, representing almost all the calcifications visible in chronic pancreatitis, are located in the major pancreatic duct or in the secondary branches. During the past 10 years, new sophisticated endoscopic techniques have been developed to remove obstructing calculi from the main pancreatic duct. These techniques require an accurate evaluation of the location of the calculi, since calculi cannot be removed from secondary branches. Therefore, a new radiological approach has been developed, based on helicoidal scanning and multiplanar and tridimensional reconstructions of the calculi layout.

Calculi↗
PubMed1994

Case report: colour Doppler demonstration of pseudoaneurysms complicating pancreatic pseudocysts.

The great morbidity and mortality associated with pseudoaneurysms complicating pancreatic pseudocysts stress the need for their early detection. The authors report the use of colour Doppler sonography in the detection of pseudoaneurysms within pancreatic pseudocysts, emphasizing not only the value of this modality in the initial diagnosis, but also its value in monitoring the success of transcatheter embolization. Colour Doppler should be used systematically in the evaluation of pancreatic pseudocysts.

Aged↗
PubMed1994

Transjugular intrahepatic portosystemic stent shunt as a rescue treatment after sclerotherapy failure in variceal bleeding.

BACKGROUND: Variceal bleeding carries high early mortality, especially after failure of conventional treatments such as endoscopic injection therapy. The present study analyses the efficacy of transjugular intrahepatic portosystemic stent shunt (TIPS) in cirrhotic patients after failure of sclerotherapy for variceal bleeding. METHODS: Twenty-four consecutive patients underwent TIPS in this indication. RESULTS: The procedure was successful in all patients, with reduction of size or disappearance of varices in 96% of them. Four patients (17%) developed encephalopathy and six (25%) rebled during the follow-up period (median 5 months; range 1-19). Thirty-day mortality was only 17% and 29% during the follow-up period. Deaths were mainly due to liver failure, especially after procedures performed in emergency. Significant decrease in liver function was observed in the days following the procedure. To maintain long-term patency of the shunt, revision was required in nine patients (38%). CONCLUSIONS: TIPS seems to be a promising salvage therapeutic procedure after failed sclerotherapy, but this needs to be addressed in controlled trials.

Esophageal and Gastric Varices↗
PubMed1992

Ultrasound evaluation of soft tissue tumors.

Because of its availability, ultrasound should be the preferred initial modality for the evaluation of palpable superficial masses. Most ultrasound units are equipped with high frequency probes that allow superficial focalization. The differential diagnosis of soft tissue masses and the sonographic features of some benign and malignant soft tissue lesions are reviewed in this article. After an initial ultrasound evaluation confirming the presence of a tumor, the need for and the role of other imaging modalities can be determined. In selected cases ultrasound may obviate the need for further imaging. MRI and CT should be reserved for cases in which sonography fails to establish a specific diagnosis or to demonstrate the limits of the soft tissue mass.

Adult↗
PubMed1992

[Encysted gossypiboma of the lesser omentum: complementary aspects of echography and computerized tomography].

The authors report the fortuitous demonstration of an asymptomatic gossypiboma during the preoperative staging of a rectal carcinoma 13 years after abdominal surgery for perforated gastric ulcer. Ultrasonography disclosed a well-defined hypoechoic mass containing highly echogenic foci with a strong posterior shadow. The CT findings are reported, as well as the complementary aspects of sonography. Differential diagnosis from tumors of the lesser omentum is also presented.

Aged↗
PubMed1991

Cyst of the gallbladder.

A cyst of the gallbladder is a very rare lesion. The possible causes of such an anomaly are reviewed. It may be acquired or congenital. The latter is particularly exceptional. A case of congenital cyst is reported and illustrated by various imaging techniques.

Cysts↗
PubMed1990

Transversus abdominis muscle function in humans.

We used a high-resolution ultrasound to make electrical recordings from the transversus abdominis muscle in humans. The behavior of this muscle was then compared with that of the external oblique and rectus abdominis in six normal subjects in the seated posture. During voluntary efforts such as expiration from functional residual capacity, speaking, expulsive maneuvers, and isovolume "belly-in" maneuvers, the transversus in general contracted together with the external oblique and the rectus abdominis. In contrast, during hyperoxic hypercapnia, all subjects had phasic expiratory activity in the transversus at ventilations between 10 and 18 l/min, well before activity could be recorded from either the external oblique or the rectus abdominis. Similarly, inspiratory elastic loading evoked transversus expiratory activity in all subjects but external oblique activity in only one subject and rectus abdominis activity in only two subjects. We thus conclude that in humans 1) the transversus abdominis is recruited preferentially to the superficial muscle layer of the abdominal wall during breathing and 2) the threshold for abdominal muscle recruitment during expiration is substantially lower than conventionally thought.

Abdominal Muscles↗
PubMed1989

[Abdominal localizations of von Recklinghausen's neurofibromatosis: apropos of a false uterine leiomyosarcoma].

This article reports the surprising history of a patient presenting a von Recklinghausen neurofibromatosis. Ten years after a full program of radio- and chemotherapy for a so-called invasive uterine leiomyosarcoma, the diagnosis of intestinal neurofibromatosis is finally established and the patient is surgically cured. The authors discuss the difficulties of the histologic diagnosis and the aid of the recent techniques of immunohistochemical markers. The second part of the article provides the actual clinical classification of the different types of neurofibromatosis with their diagnostic approach. It also offers a review of the literature concerning the intestinal location of the disease and the potential risks of cancer formation.

Abdominal Neoplasms↗
PubMed1988

US demonstration of pyelitis and ureteritis in children.

The authors report a new ultrasonic sign of urinary tract infection in children: thickening of the renal pelvis and/or ureteral wall. This thickening as encountered in 10 children, (10 months to 12 years) all with urinary tract infection, appears to result from inflammatory changes and to correspond to a sonographic sign of pyelitis and ureteritis. These alterations of the walls are similar to striations and folds described in this pathology on intravenous pyelograms. The thickening was the only sign of abnormality of the urinary tract in two cases; it was observed without reflux in four cases. The demonstration of this pattern should lead to further uroradiological investigations and to appropriate treatment.

Child↗
PubMed1988

Non-obstructive kidney transplant dysfunction: magnetic resonance evaluation.

The value of magnetic resonance imaging in the differential diagnosis of non-obstructive dysfunction of renal allografts was studied in a series of 58 examinations at 0.5 T. Four parameters were evaluated: the corticomedullary differentiation; the relative thickness of the cortex; the evolution, with echo number, of the relative signal intensities of kidney parenchyma and adjacent fatty tissue on images generated by a long time to repeat multiecho sequence; and the proximal vascularization. The loss of corticomedullary differentiation is the major finding in acute rejection, but it is not specific as it is also observed in chronic rejection and in the much rarer acute glomerulonephritis. Thickening of the cortex is helpful for the detection of rejected transplants with visible corticomedullary delineation (26% of the cases). Uncomplicated acute tubular necrosis appears as a normal transplant.

Adolescent↗
PubMed1988

[MRI of the prostate. Calculated imaging. Preliminary experience: 28 cases].

The majority of studies with MR imaging in prostate disease are based on a semiology obtained using images weighted in T1 and T2. A study was carried out to evaluate effects of images calculated in T1 and T2 obtained at 0.5 T. This preliminary study concerns 28 prostate examinations with spin-echo acquisition and inversion-recuperation parameters, and provided images calculated in T1, weighted and calculated in T2. Images allowed detection and characterization of prostate lesions. However, although calculated images accentuate discrimination of the method, the weighted images conserve their place because of their improved spatial resolution.

Aged↗