Magnetic resonance and ultrasound imaging of a patient with carotydinia.

Carotydinia, also called transient perivascular inflammation of the carotid artery (TIPIC) is a rare diagnostic entity related to an inflammation over the carotid bifurcation region. Despite the confusion about the definition of this term, neck pain remains the main symptom. Several articles revealed the relevance of imaging in the diagnosis of this disease.

Primitive neuroectodermal tumor of the lumbosacral nerve plexus: A case report.

We report an uncommon case of primitive neuroectodermal tumor/ Ewing's sarcoma of the lumbar and sacral nerve plexus in a 17years old boy who presented with an intense pain in the lower back radiating to legs. Magnetic resonance imaging showed a soft tissue mass with thickening of lumbar and sacral spinal nerve roots (L5-S3 level), along with widening of the corresponding foramina. There was also posterior scalloping of L5/S1 vertebrae and invasion of the sacral bone.

Lipid-poor vertebral hemangioma mimicking a vertebral metastasis of cervical carcinoma.

Vertebral hemangiomas are classified into typical and atypical forms. On imaging, atypical forms may look like malignant lesions. The confrontation of data from different imaging modalities (MRI; CT; scintigraphy) facilitates the diagnosis.

A rare case of Fahr disease revealed by an epileptic seizure.

Fahr's disease is a rare neurodegenerative disorder, identified by bilateral and symmetrical intracerebral calcifications of mainly the basal ganglia. Patients often present extrapyramidal or neuropsychological symptoms. Seizure is one of the rarest manifestations that can reveal Fahr disease.

Posterior reversible encephalopathy syndrome (PRES): Should more attention be paid to the atypical forms?

Posterior reversible encephalopathy syndrome (PRES) is an uncommon, but important, pathology affecting primarily the posterior cerebral circulation. Typical imaging features include vasogenic edema involving the bilateral occipital and parietal lobes. We report 4 cases of atypical PRES: The first one is a 59-year-old woman with a medical history of diabetes and hypertension who presented a consciousness disorder.