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C Caron-Poitreau

Publications and source records attributed to C Caron-Poitreau.

At least 19 recordsLinked to original sources
PubMed1987

[Value of the angioscan in the etiological diagnosis of cerebromeningeal hemorrhage].

Etiologic diagnosis of cerebromeningeal hemorrhage was suspected on CT scan without contrast imaging as a function of distribution of cisternal hyperdensities and/or topography of intracerebral hematomas and/or distribution of parenchymatous hypodensities. It was established in 90% of cases by results of angioscan (type and site of vascular malformation causing the cerebromeningeal hemorrhage are defined with this percent exactitude). Cerebral arteriography provides indispensable precise morphologic data on the vascular malformation: exact site of aneurysm or arteriovenous malformation, orientation of the aneurysm and presence or absence of a collar. It is therefore irreplaceable and will be guided by data from the angio-CT scan.

Adolescent↗
PubMed1985

[X-ray computed tomographic aspects of gelatinous disease of the peritoneum. Apropos of 5 cases].

Gelatinous disease of the peritoneum, designated by Anglo-Saxon authors as peritoneal pseudomyxoma is a rare affection characterized by the presence in the peritoneal cavity of a mucoid substance corresponding to an acid mucopolysaccharide. It develops secondary to an acid mucopolysaccharide. It develops secondary to mucosecreting malignant tumors, particularly of ovarian or appendicular origin, and its capacity to provoke multiple recurrences makes it of fairly poor prognosis. Diagnosis has been improved by the availability of non-aggressive investigations such as ultrasound and particularly computed tomography imaging. Suggestive CT scan signs are hepatic scalloping and a partitioned intraperitoneal effusion. Follow up scans can give data on the course of the disease and detect any complications (renal and digestive lesions, intraperitoneal abscess).

Aged↗
PubMed1985

[Value of x-ray computed tomography in the study of the inferior vena cava in urologic practice].

The CT scan provides a reliable evaluation of the inferior vena cava, especially since the development of second and third generation scanners. It can readily detect congenital malformations and obstructive anomalies complicating renal cancer and it is also able to determine the tumoral or thrombotic nature of the venous obstruction. This excellent definition of the vessel reduces the indications for caval angiography to a few exceptional cases.

Humans↗
PubMed1984

[Computed x-ray tomography in the detection of venous extension in renal cancer].

With reference to eleven cases of renal cancer with involvement of the inferior vena cava, CT semeiology of this venous complication is detailed. Furthermore, the authors suggest that the images are capable of a pathological interpretation which may indicate whether the obstruction is caused by the tumor or a thrombus. Lastly, the value and limitations of CT scan for detecting caval obstructions associated with renal cancer are analyzed.

Adult↗
PubMed1984

[Comparison between the findings of x-ray computed tomography and thoracotomy in the evaluation of locoregional extensions of primary bronchial cancer. Apropos of 45 cases].

This study concerns 45 patients operated on for a primary bronchial cancer and without local or regional extension on a standard pulmonary radiograph. All subjects had a computed tomographic examination (TDM) on average 28 days before thoracotomy. The comparison was established and the possibility of excising the tumour, joined to an anatomopathological study of the structures removed. The series included only those patients with the following minimal conditions: tumour volume of 4 cms, central tumour, or close to the chest wall. The degree of pleural extension was predicted with a sensibility of 92%, a specificity of 72% (accuracy of 78%). The parietal extension was predicted with a sensibility of 63%, a specificity of 100% (accuracy of 95%). Direct invasion of the mediastinum, present 16 times, was recognized by the scanner in 8 occasions (sensibility 50%) and excluded 23 times out of 25 (specificity 85%). Extension to mediastinal ganglions was detected by the scanner 10 times out of 15; the absence of invasion 27 times out of 30. Thus, if sometimes the TDM examination showed the certainty of local or regional tumour extension, in many cases it did not by itself allow this conclusion. This was true for tumours flush with the pleura or mediastinum because their resolution was insufficient to distinguish neoplastic tissue from normal or inflammatory tissue. The TDM always established a remarkable "map" of the mediastinal glands guiding the biopsy or the thoracotomy in case of enlarged glands. One of the limits includes the possibility of occult extension without glandular hypertrophy.

Adult↗
PubMed1982

[Computed tomography in renal trauma (author's transl)].

On the basis of a series of 25 cases of closed recent trauma of the kidney examined by scanner, the authors analyzed the information provided by the method and its correspondence with the various lesions encountered. In the course of this study, the scanner appeared to be the method of investigation which, at the present time, offers the best information concerning the severity of parenchymatous damage, as well as the size, nature and course of the perirenal blood or urine collections. Such data being fundamental to therapeutic decisions, the place of the scanner is essential in the evaluation of renal trauma, and, in severe forms, should be performed immediately after the irreplaceable I.V. urography performed as an emergency.

Adolescent↗
PubMed1982

[Tomodensitometric semiology of Budd-Chiari syndromes].

Specific computed tomography findings in Budd-Chiari's syndromes are described, based on an analysis of images from five cases. Recognition of these signs assists diagnosis when little evidence of the disease exists or when atypical images are produced. The performance of an angioscan and the study of the changes on repeated imaging provides essential data for liver exploration: on the one hand these emphasize or even unmask the lesions (peripheral multi-lacunar images in the obstructed territory), and on the other hand they assess possible lesions of the inferior vena cava as well as lack of filling of the hepatic veins. Furthermore, they assist avoidance of the trap of pseudo-metastatic images by the particular kinetic of the attenuation of contrasts and the systematization of the lesions. The typical appearance of the liver in Budd-Chiari's syndromes probably results from the conjunction of histopathologic and hemodynamic modifications, notably localized inversions of portal flow and particular by-pass pathways. Computed tomography can be included in exploratory procedures as a non-invasive method capable of confirming the diagnosis of Budd-Chiari's syndrome and of orientating vascular explorations essential for pre-operative evaluation.

Adult↗
PubMed1981

[Diagnostic value of the CT scan in suppurative abdominal lesions (author's transl)].

Computed tomography, a relatively non-aggressive method of radiological investigation, can establish diagnosis, and, more particularly, define the site of suppurative lesions in the peritoneal cavity, the retroperitoneal space, and in solid organs (liver, kidneys, spleen). This method was employed to explore the abdomen in 52 patients. Intraperitoneal suppurations were diagnosed in 15 cases after demonstration of a low density mass, which may contain clear pockets of gas or be limited by a higher density wall. In 4 cases, a retroperitoneal lesion was detected (psoas or perinephric abscess). A parenchymatous abscess was present in 6 cases, 4 in the liver, one in the kidneys, and one in the spleen. Using the angioscan technique, after a bolus injection of an iodised contrast medium, improved definition of the limits of the abscess can be obtained. Differential diagnosis of intraperitoneal suppurative lesions in cases of developing haematomas, or in the presence of an intrahepatic abscess, which may be confused with necrotic metastases or post-traumatic ischaemic foci, may be difficult.

Abscess↗
PubMed1981

[The value of computed tomography in the assessment of thoracic mesothelioma (author's transl)].

The authors report their experiences with computed tomography (CT) in 17 patients suffering from histologically proven pleural mesothelioma. The examination has two particular values. First the extent of the lesions can be assessed, in particular the retraction of the hemithorax, the detection of mediastinal involvement (which would be invisible to all other methods of examination including thoracoscopy), the exploration of the adjacent lung and the fissures, as well as the diaphragm. Secondly CT appears to be the only objective and reproducibly examination for the surveillance of lesions under treatment.

Adult↗
PubMed1981

[Contribution of computed tomography to the exploration of aortic aneurysms (author's transl)].

A technique for exploring aortic aneurysms is described, and the results analysed in 50 cases (11 thoracic, 32 abdominal, 3 multiple, and 4 with both thoracic and abdominal aneurysms). The diagnostic value of this method appears evident for aneurysms in the thorax, and it can reduce the need for conventional radiological examinations. Results of examination of abdominal aneurysms were compared with those of ultrasonography and angiography. Angiography was more effective for studying collateral lesions, while ultrasonography is still a reliable, non-aggressive, low cost investigational procedure. Computed tomography, however, represents the most polyvalent, non-aggressive technique for evaluating the size of the aneurysm, its thrombotic components, and its extension to neighbouring organs.

Adult↗
PubMed1980

[Computer tomography examination of the diaphragmatic pillars. Value during the study of the postero-inferior mediastinum (author's transl)].

The authors review the results of 100 computer tomography examinations of the normal thoraco-abdominal region and define the radiological anatomy of the posterior submediastinal space limited by the pillars of the diaphragm, which can almost always be investigated by computer tomography. Study of this posterior submediastinal space in 276 cases, by means of a strictly defined procedure, was used to illustrate the elementary signs encountered: effacement of the pillars, loose appearance of the pillars with absence of the median arcate ligament, presence of an abnormally sized structure in the middle of the space. The main indications for computer tomography examination of this region are for diagnosis of an opaque tumor of the postero-inferior mediastinum, and the investigation of extensions of bronchial cancers, regionally located neoplasms and lymphomas.

Blood Vessels↗
PubMed1980

[Contribution of computed tomography to radiological investigation of the adrenals (author's transl)].

Computed tomography examinations of the liver, kidneys, and pancreas were conducted in 466 patients over a period of one year, and both adrenals were visualized in 94 p. cent of cases. The adrenals were investigated during examination of the posterior submediastinal space in certain types of cancer, and clinically silent adrenal metastases were demonstrated in 14 patients with bronchial or pancreatic cancer. When computed tomography is employed for specific investigation of the adrenals (22 cases), the technique varies (5 mm thick sections, "angioscan"), and results are comparable with those of early renal tomography, ultrasonography, and scintigraphy. Computed tomography provides clearer evidence of small tumors (less than 2 mm in diameter) and hyperplasia, and can provide images that are perfectly correlated with operative findings, but not always with the histology of the lesions. A method for exploring the adrenals radiologically, including the use of computed tomography, is proposed as a function of the biological nature and size of the tumors.

Adrenal Gland Neoplasms↗