[Multivisceral tuberculosis with aortic complication in an immunocompetent patient]. / Tuberculose multiviscérale avec complication aortique chez un sujet immunocompétent.

The medical and imaging data of a 59 year old male is reported. The patient presented with cough, fever, night sweats and weight loss, for which a final diagnosis of multivisceral tuberculosis (with peritoneal involvement and mycotic aneurysm) was made, by means of CT, MRI and laparoscopic findings. This disease is uncommon in developed countries with subjects lacking the usual risk factors. Because delayed treatment may be lethal, especially with such serious vascular complication, the authors review the value and limitations of CT and MRI along with the suggestive features.

[Epithelioid hemangioendothelioma of the foot]. / Hémangioendothéliome épithélioïde du pied.

Epithelioid hemangioendothelioma is a rare bone tumor. The authors report a case of a grade 1 multifocal epithelioid hemangioendothelioma of the foot in a 24-year-old man treated by large surgical resection of the two lesions.

[A case of hepatic Loeffler's syndrome]. / Un cas de Loeffler hépatique.

INTRODUCTION: During nematode infection transit of the microorganism in the lung may be associated with transient infiltration lesions accompanied by marked eosinophilia. In the invasion stage of the disease maturation and sexual differentiation of schistosomules is restricted to portal vessels. Liver ultrasonography may show concomitant abnormalities. EXEGESIS: Eosinophilia was diagnosed in a 36-year-old man residing in Central Africa. Clinical examination, chest X-ray and biology were normal. Liver ultrasonography showed numerous hypoechoic lesions, up to 3 cm in diameter. Ultrasonography-directed biopsy demonstrated infiltration of both portal vessels and liver sinusoids, with sometimes microabcesses. No parasite was found in either blood, stool, or rectal biopsy. Immunoelectrophoresis and hemagglutination showed positive bilharziosis serology, whereas serology for other helminthiases was negative. Four months after treatment eosinophilia was still high, liver ultrasonography was normal, and hemagglutination was negative. CONCLUSION: The transient shistosomules maturation-related liver abnormalities detected by ultrasonography should be differentiated from the laying phase of the disease.

[Pilocytic astrocytoma of the conus medullaris]. / Astrocytome pilocytique du cône médullaire.

We report the case of a rare glial tumor of the conus medullaris classified as pilocytic astrocytoma in a young adult. This tumor is most commonly found in the brain. The imaging findings will be correlated with the findings at histology. The literature will also be reviewed.

[Osteoarticular involvement in parasitic diseases: bone echinococcosis]. / Atteintes ostéo-articulaires d'origine parasitaire: l'échinococcose osseuse.

Hydatid disease is the most common human disease caused by helminths, but primary skeletal involvement is uncommon. Diagnosis is usually obtained late after considerable extension, half of which concerns the spine. The dissemination mode leads to local malignancy with severe prognosis. Medical imaging is essential. Plain x-ray findings are polymorphous and nonspecific, but computed tomography and magnetic resonance imaging are particularly useful for exhaustive pretherapeutic assessment of extension and for patient follow-up.

[Osteoarticular involvement in parasitic diseases: bone mycetoma]. / Atteintes ostéo-articulaires d'origine parasitaire: les mycétomes osseux.

Mycetoma remains a common pathology in tropical areas. Diagnosis, based on mycology and pathology is still frequently late and treatment often leaves severe functional disorders. Medical imaging is indispensable to evaluate disease spread to bone tissue. Plain radiograms usually show cortical erosion, defects with sclerosing margins, and bone thickening. CT is the most sensitive technique to detect bony involvement. CT and MR imaging, when available, are the most accurate techniques for determining disease extension in both bones and soft tissues.

[Osteoarticular involvement in parasitic diseases: bone treponematosis]. / Atteintes ostéo-articulaires d'origine parasitaire: les tréponématoses osseuses.

Bone and joint localizations of treponematosis vary greatly although there are many common features. Osteal and periosteal lesions are common. We report radiographic descriptions of bone and joint treponematosis, which must not go unrecognized due to the increasing incidence of these diseases.

[An MRI study of primary testicular tumors]. / Etude IRM de 14 cas de tumeurs testiculaires primitives.

Magnetic resonance imaging (MRI) is a high performance tool for morphological assessment and tissue characterization in the presurgical work-up of scrotal tumors. A wait-and-see attitude is now possible for benign lesions identified as epidermoid cysts. Pathology examination remains more pertinent for an exhaustive assessment of local extension, but MRI can provide a convincing, if not definitive, distinction between seminomatous and non-seminomatous germ cell tumors.

[Ureteral hematoma complicating anticoagulant treatment]. / Hématomes urétéraux compliquant un traitement anticoagulant.

Submucosal hemorrhage of the ureters, are a very uncommon quoted cause of hematuria when overdosing anticoagulants. We report two cases, CT shows some very typical aspects but can also highlight, as reported formerly, another associated complication: parietal hematoma of the small bowel.

[Bladder herniation in a inguinal-scrotal hernia complicated by acute renal insufficiency]. / Extériorisation vésicale dans une hernie inguino-scrotale compliquée d'une insuffisance rénale aiguë.

We report one case of massive inguino-scrotal bladder herniation which was responsible for an acute obstructive renal insufficiency. The different types of bladder hernias and their anatomic factors are described. The clinical-radiological findings and surgical management are discussed.

Human African trypanosomiasis: MRI.

We report a case of human African trypanosomiasis caused by Trypanosoma brucei rhodesiense. After the febrile period of parasite dissemination, the patient had meningeal involvement but normal CT. MRI showed the appearances of meningitis. After two periods of arsenical treatment, a severe encephalopathy occurred suggesting post-therapeutic reactive encephalitis (PTRE). Nevertheless, T2-weighted MRI showed no oedema, but focal bilateral high signal areas in the white matter. PTRE was excluded and a third course of treatment was undertaken. The lesions progressively disappeared.

[Demonstration by x-ray computed tomography of renal involvement caused by NSAID poisoning]. / Mise en évidence par tomodensitométrie de l'atteinte rénale des AINS dans le cadre d'intoxication.

We describe the contribution of computed tomography in the determination of the renal damage after using tiaprofenic acid. Computed tomography realized six hours after injection of contrast medium revealed corticomedullary enhancement secondary to vascular and tubular stasis. This stasis is compatible with interstitial edema in relation with usually reversible lesions of tubulo-interstitial nephritis induced by of nonsteroidal anti-inflammatory drugs.

[MRI aspects of filaria scrotum elephantiasis. MRI-anatomopathological correlations]. / Aspects IRM de l'éléphantiasis scrotal filarien. Corrélations IRM-anatomopathologiques.

We report a case of filaria scrotum elephantiasis explored by MRI. MRI and pathological description of the three muscular layers (superficial, medium, deep) were well correlated.

[Cyst of the lumbar posterior longitudinal ligament. An unusual cause of non-discal sciatica]. / Kyste du ligament commun vertébral postérieur. Une cause originale de sciatique non discale.

Ganglion cyst of the longitudinal posterior ligament of the spine is a rare entity, only described in 11 cases. This lesion occurs in young subjects suffering from classical lombosciatica, and has perhaps a traumatic origin. Computerized tomography and MRI provide the diagnosis.

Functional magnetic resonance imaging at 1.5 T during sensorimotor and cognitive task.

Functional activations of the human brain cortex were observed with a standard 1.5-tesla MR imaging system using a long time echo fast low-angle shot sequence. Neural activation increases regional cerebral blood flow resulting in increased capillaries and venous blood oxygenation. Processing requires adapted algorithms because the time course of intensity signal showed fluctuations of the baseline. The use of a 'follow-up' method to generate activation maps is proposed. Brain activation was detected in striate cortex during photic stimulation and in sensorimotor areas while subjects were moving their hands. In mental imagery tasks, we observed a primary and secondary visual cortex activation during memory recall of the flashing light. Motor ideation showed an activation of the rolandic areas.