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Biomedical subjects

P Vandermarcq

Publications and source records attributed to P Vandermarcq.

At least 37 records · Page 2Linked to original sources
PubMed1993

[Adamantinoma of the tibia. X-ray computed tomographic and MRI study. Apropos of a case].

Adamantinoma of the long bones in a very rare tumor that mainly affects the tibia. Its diagnosis is difficult both radiologically, as the lesion appears as a poorly specific metaphyseal lacuna with or without periosteal reaction, and histologically. Its prognosis used to be guarded because of recurrence and of possible metastatic diffusion, but it has been considerably improved by wide resection with reconstruction. On the occasion of a new case, the authors describe the appearance observed with MRI and the merits of this examination for the preoperative assessment.

Ameloblastoma↗
PubMed1992

[Leiomyosarcoma of the inferior vena cava. Diagnostic difficulties].

As leiomyosarcomas of the inferior vena cava are extremely infrequent, the preoperative diagnosis of such tumors is rarely established. We report two cases in which the diagnosis was suggested by modern imaging prior to surgery. Three examination techniques allo contemplating this diagnosis. Ultrasound and cavography show either an intraluminal, multilobulated, roughly hyperechogenic lacuna on one of the segments of the vena cava, without any remote thrombosis image, or a complete obstruction of the vena cava with collateral circulation and a hyperechogenic right paraaortic mass. Computed tomography demonstrates the extraluminal extension. It reveals the presence of a right lateroaortic tumor with heterogeneous tissue density, in which the vena cava is concealed. The association of an intraluminal lacuna and of a tumoral syndrome on CT is highly suggestive. These three techniques are equally essential for the assessment of this tumor, which is primarily based on vascular findings. Exeresis is always difficult and the prognosis very poor.

Aged↗
PubMed1992

[X-ray computed tomographic study of the ethmoid bone and middle meatus. III. Application to chronic infectious sinus pathology].

As nasal endoscopy, high resolution CT is a part of the chronic rhinosinusitis pre-operative assessment. It shows, thanks to a precise and anatomical study of the ethmoid and sinusal draining, the extension of the diseases and the local morphological variations which predispose to chronic diseases. The main aspects of chronic sinusitis, nasal polyposis and fungal maxillary sinus diseases are reported. The frequency of individual morphological variations and the mucosal changes due to a nasal cycle require a great care in the interpretation of the diseases.

Aspergillosis↗
PubMed1991

[Calcifications after intra-disk injection of triamcinolone hexacetonide in lumbar disk hernia. Evaluation of therapeutical results in 3 years].

The development of disk or epidural calcifications is a frequent possibility following intra-disk injection of triamcinolone hexacetonide. It was found 10 times in 26 follow-up CT scans obtained 2 to 3 years after the injection. These calcifications are often clinically silent, but they sometimes accompany a recurrence of the initial painful symptomatology. Furthermore, evaluation at 3 years of therapeutic results in a previously published series of patients who had received an intra-disk injection of triamcinolone hexacetonide showed a marked decrease in favourable results (30% vs 67% at 6 months). These two arguments: disappointing long term results and possibility of disk calcifications, are felt by the authors to justify abandoning the technique of triamcinolone hexacetonide by intra-disk injection in the treatment of lumbar disk prolapse.

Adult↗
PubMed1991

[X-ray computed tomographic study of the ethmoid and middle meatus. II. Radio-anatomy (axial incidence) and morphological variations].

Chronic rhinosinusitis endoscopic surgery needs an accurate evaluation of diseases and paranasal sinus anatomic variations. High resolution CT by thin section (2 mm) allow this pre-operative assessment. An anatomical study of the ethmoid air cell system is always possible in axial plane. The bidimensional CT exploration (axial and coronal plane) displays the anatomic variations of ostiomeatal unit, that have been reported to predispose sinusitis. They are nasal septal deviation, pneumatization and paradoxical curvature of the middle turbinate, pneumatization of unciform process, Haller's cells, prominent agger nasi cell and ethmoid bulla. The endoscopic endonasal surgery landmarks, the individual morphologic variations, the topographic relations to the orbit and to the brain are also well shown by CT.

Ethmoid Bone↗
PubMed1990

[Intrathoracic chondrosarcoma arising at a rib in a patient with multiple exostoses].

A case of chondrosarcoma arising from the 7th left rib in a patient with multiple exostosis disease is reported. The initial CT scan feature is a purely intrathoracic mass with a parietal and pericardial junction and calcifications within the tumor. A review of the literature about the costal chondrosarcoma and their CT scan features is done and shows the uncommon initial aspect of this case.

Adult↗
PubMed1989

[Pelvic cystic lymphangioma. Apropos of a case in an adult].

The authors report about the observation of a subperitoneal pelvic cystic lymphangioma in an adult patient: ultrasound and CT dat had yet never been described for the rare pelvic form, and are the same as with the other locations of cystic lymphangioma in adults.

Aged↗
PubMed1989

[Radiological and magnetic resonance aspects in cerebral venous angioma].

This report based on a series of 8 cases deals with the appearance of cerebral venous angiomas with computed tomography (CT), arteriography and magnetic resonance imaging (MRI). The CT data are not conclusive, and venous involvement is demonstrated by arteriography, as well as the site of involvement. Magnetic resonance imaging seems to be useful owing to the morphological information and data on flow phenomena it provides.

Adolescent↗
PubMed1988

[Supratentorial hemangioblastoma].

The authors report the case of an isolated supratentorial hemangioblastoma occurring in a woman operated on for a cerebellar hemangioblastoma twenty years before. The data furnished by immunohistochemical technics don't seem to be deciding and don't work out the problem of hemangioblastoma histogenesis.

Carotid Arteries↗
PubMed1987

[Aneurysm of an aberrant right subclavian artery. Original contribution of x-ray computed tomography and digital subtraction angiography].

An original aspect of a case of atheromatous aneurysm of an aberrant right subclavian artery was the evaluation of the complementary diagnostic value of CT scan and intravenous digital subtraction angiography imaging. The vascular anomaly was clearly identified, the CT scan visualizing the aneurysm sac more effectively and the angiography providing a vascular cartography. These two non-invasive exploratory examinations provide complementary data for the preoperative diagnosis and investigation of the aberrant right subclavian artery aneurysm.

Aneurysm↗
PubMed1987

[Epithelioid hemangioendothelioma of the liver and superior vena cava. Radiological results apropos of a case in an adult].

Epithelioid hemangioendothelioma is a rare, ubiquitous, vascular tumor, difficult to diagnosis but sometimes identified after detection of metastases, and with a prognosis intermediary between angioma and angiosarcoma. The tumors have been described as developing in the large venous trunks and recently lesions have been reported in liver. Little documented data exist with respect to radiologic appearances. A case is reported with a histologically confirmed hepatic localization in association with a lesion in superior vena cava.

Female↗
PubMed1985

[X-ray computed tomography of extrahepatic cholestasis].

Findings in a series of 53 examinations performed in patients with extrahepatic cholestasis demonstrated the value of computed tomography exploration to determine mechanisms and etiology of biliary tract affections. Sensitivity of the CT scan for detection of biliary tract dilatations was equivalent to that obtained by ultrasound, and was even higher for certain types of patient (obese, distended, etc.). Results of this study combined with data in the literature enables precise diagnostic criteria to be established when determining etiology of these dilatations, which require investigation by a CT scan when ultrasound imaging proves unsatisfactory.

Bile Duct Diseases↗
PubMed1985

[Measurement of antetorsion of the femoral neck by ultrasonics. Comparison with x-ray computed tomography].

A method of measurement of femoral anteversion using ultrasounds is presented. It is easily reproducible and non-irradiating. It was tested in 100 hips and compared with measurement by tomodensitometry. The results were similar. Both methods were tested in dry bones and the results again were comparable. It is concluded that ultrasound measurements are reliable and without danger and should be used in preference.

Femur Neck↗
PubMed1985

[Hematoma of the psoas. Comparative diagnostic contributions of ultrasonography and x-ray computed tomography].

A 11 cases study of hematoma of the iliacus muscle underlines better results obtained by C.T. Scanner compared to those of ultrasonography examination in term of definite diagnoses. Comparison of density values and repeated examination were useful to assert diagnosis and to appreciate the course of the illness. Only C.T. Scanner was able to show which portion of the muscle was concerned. Authors correlated the C.T. Scanner results to the nature of the entrapment neuropathy clinically found: an isolated femoral nerve palsy or association with an obturator nerve dysfunction.

Adult↗
PubMed1985

[X-ray computed tomography and primary thoracic seminoma].

The primitive thoracic seminoma is a rare tumor. Given their low frequency, these tumour have rarely been the object of C.T. exploration. It determines the compressive effect on neighbouring organs, the volume and extensive character of the tumor. C.T. exploration allows proper surveillance after therapeutic.

Adult↗