[Aspects and value of MRI in the diagnosis and follow-up of common microbes infectious spondylodiscitis. Apropos of 25 clinically and biologically suspected patients]. / Aspects et intérêt de l'IRM dans le diagnostic et le suivi des spondylodiscites infectieuses à germes banals. A propos de 25 patients suspects cliniquement et biologiquement.

This work is about 25 patients clinically and biologically suspected of spondylodiscitis (27 levels). All of them had a MRI exam before disco-vertebral needle biopsy and treatment. The results are compared to those of literature. Each infectious spondylitis case (19 cases) had a new MRI exam each three months. This study conclude to the great sensibility of MRI (89%) in the diagnosis of infectious spondylitis and to the limited interest of it in the follow-up of spondylodiscitis.

[Evaluation of the scanner and radiography in rheumatic pelvispondylitis]. / Evaluation du scanner et de la radiographie dans la pelvispondylite rhumatismale.

We studied 20 normal subjects and 20 suffering from sacro-iliitis. The performance of the two techniques were compared in studying reports ROC curve from several readers. We assessed the performance of each technique and each sign: CT scan appears as a better technique than plain films. Some signs present a poor interest: osteophytes seen on CT or plain films, subchondral cysts seen on CT. In other respects, articular cartilage erosions, subchondral sclerosis are main signs as much on CT as on plain films. In conclusion, CT scan allowed an accurate analysis of sacro-iliitis. It has a better diagnostic value than plain films and, in case of doubt, should be performed to increase diagnosis sensibility and specificity.

[Pulmonary hemosiderosis. Hemodynamic or idiopathic origin? Diagnostic contribution of imaging and review of the literature]. / Hémosidérose pulmonaire. Origine hémodynamique ou idiopathique? Contribution diagnostique de l'imagerie et revue de la littérature.

We report two cases of Pulmonary Hemosiderosis. The first patient (adult male) had an angiosarcoma of the left auricle and developed pulmonary arterial hypertension, was treated by surgery and chemotherapy. The other patient (adult female) suffered from Idiopathic Pulmonary Hemosiderosis (IPH) and had been treated by corticosteroids for fifteen years, with one acute episode during this period. We discuss the etiological diagnosis and the contribution of chest radiographs, CT-scan and MR Imaging in this rare illness according to literature. IPH occurs mostly in childhood with acute and fatal issue, whereas presents as a chronic form in adults. Assessment of IPH requires large investigations to eliminate hemodynamic, hemato-, immuno-, carcinological disorders, and infectious agents as well. Review.