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Biomedical subjects

F M Lopez

Publications and source records attributed to F M Lopez.

At least 37 records · Page 2Linked to original sources
PubMed1992

Marchiafava-Bignami disease. A case studied by structural and functional brain imaging.

Marchiafava-Bignami disease (MBD) is a rare complication of chronic alcoholism. The clinical features, X-ray, CT and MRI findings are well documented. However, functional brain imaging has not been used in cases of MBD. We used single-photon emission computed tomography (SPECT) to monitor the regional cerebral blood flow in a patient suffering from a acute form of MBD, from which he subsequently recovered. Several abnormalities were found. A more frequent use of functional brain imaging in MBD could improve our knowledge of pathogenesis and prognosis for MBD.

Adult↗
PubMed1992

[Arteriovenous fistula caused by spontaneous rupture of an aortic or iliac aneurysm in the iliocaval venous system. Apropos of 2 cases].

The authors report two cases of arteriovenous fistula due to spontaneous rupture of an aortic or iliac aneurysm into the iliocaval venous axis. This is a rare complication of atheromatous aneurysm (less than 4% of ruptured aneurysms), often difficult to diagnose as the clinical presentation may be obscure. Although aortography is the reference diagnostic investigation, color Doppler ultrasonography enabled visualisation of the arteriovenous communication and provided an accurate diagnosis in one recent case. Treatment of these aortocaval fistulae is always surgical. The prognosis and immediate operative mortality depend mainly on the presence of an associated retroperitoneal rupture.

Aged↗
PubMed1991

[Selective salpingography and tubal interventional radiography].

The study involved 70 patients considered to be sterile and in whom hysterosalpingography showed no tubal passage. Selective catheterisation enabled opacification under pressure in more than 80 p. cent of cases, with perfect visualisation of the entire tubes and significant peritoneal passage. In the presence of obstructive stenosis, disobstruction-reacanalisation using a soft probe was attempted with success in more than one case out of two. Future perspectives of selective salpingography appear to be very large. This technique seems to have a large number of indications apart from transport problems: recanalisation, sterilisation, and tubal antibiotic sensitivity studies.

Evaluation Studies as Topic↗
PubMed1989

[Medical, social, economic value of the rational use of non-invasive studies for diagnosing phlebitis. Experience of the Regional Hospital Center of Nimes from 1984 to 1988].

Continuous wave Doppler, and B-Mode ultrasound allow the diagnosis of deep venous thrombosis with a 96% sensitivity, and a 98% specificity versus venography (1). Therefore, these methods can be extensively used for the detection of deep venous thrombosis, following a new diagnostic algorithm: X ray venography is used only for the assessment of topographic extent of iliac and caval thrombosis, and when non invasive methods give equivocal results. As a result, the number of X ray venographies significantly decreased since 1984 (7) in Nîmes University Hospital. About 75% of patients with a deep venous thrombosis (diagnosed by non invasive methods) were treated without necessity of X ray venography.

Algorithms↗
PubMed1989

[Bilateral multifocal renal oncocytoma].

We report a case of a bilateral multifocal renal oncocytoma and describe the features of different radiographic techniques emphasising the value of magnetic resonance imaging. This benign tumor is rare. Its preoperative differential diagnosis with renal cell carcinoma is very difficult, especially as its surgical treatment should be conservative.

Adenoma↗
PubMed1986

Real-time B-mode ultrasonography for better specificity in the noninvasive diagnosis of deep venous thrombosis.

In order to evaluate the usefulness of B-mode ultrasonography in the diagnosis of deep vein thrombosis, a prospective study was performed on 145 patients. Each patient was examined with occlusive venous plethysmography, continuous wave Doppler, real-time B-mode ultrasonography, and radiographic contrast phlebography. The diagnostic sensitivity and specificity versus phlebography were 91 and 82.1 per cent, respectively, for plethysmography, 92 and 86.6 per cent for Doppler, and 94 and 100 per cent for B-mode sonographic scanning. The combined noninvasive approach reached a 96 per cent sensitivity. B-mode ultrasonography demonstrated a mass in eight cases, and showed a superficial venous thrombosis in four cases, among the 45 patients without deep vein thrombosis. B-mode ultrasonography, therefore, appears to be very useful in obtaining a better specificity and differential diagnosis.

Adolescent↗
PubMed1984

[Abdominal injuries. Value of emergency abdominal echotomography].

The purpose of this study was to evaluate the usefulness of abdominal ultrasonic tomography, among other methods, to detect visceral lesions in multiple traumas of the abdomen. Forty-seven case-records of abdominal traumas observed over an 8-month period were selected. We used a real-time sectorial ultrasound scanner with a 3.5 MHz probe. Positive results were obtained in 11 patients who were operated upon. None of the 33 patients with negative results and only one of the 3 patients with doubtful results underwent surgery. We found that suggestive symptoms were compatible with the absence of any severe visceral lesion and, conversely, that patients with multiple traumas but little suggestive symptoms could present with one or several intra-abdominal lesions. Abdominal ultrasonic tomography can rapidly be performed and its indications are different from, but wider than, those of peritoneal lavage. It is a safe and reliable emergency examination which does not interfere with resuscitation procedures.

Abdominal Injuries↗
PubMed1984

[An improvement in the performance of emergency frontal- and lateral-view thoracic radiography].

A special technique giving good quality front and lateral chest roentgenograms in emergencies with no danger for the critically ill patient is described. The system consisted of a double-drawer plate-holder: one was passed at the back of the thorax, the other then being perpendicular to it. Placing the patient on an X-ray transparent stretcher made the technique easier. Several people were required to gently move the patient while the plate-holder was put in place.

Emergencies↗