[Value of magnetic resonance imaging in central nervous system tuberculosis]. / Apport de l'IRM dans le diagnostic de la tuberculose du système nerveux central.

Tuberculosis of the central nervous system is a major cause of morbidity and mortality in developing nations where it accounts for 10 to 30% of intracranial space-occupying lesions. It preferentially affects young subjects, predominantly male. MRI and in particular new methods, including magnetization transfer and diffusion-weighted imaging, are useful for positive and differential diagnoses of central nervous system tuberculosis and surveillance during treatment.

Atypical small hemangiomas of the liver: hypervascular hemangiomas.

Hyperdynamic hemangiomas (HH) are atypical hepatic hemangiomas with an incidence of approximately 16% of all hemangiomas in the liver. We report a case of HH in a 47-year-old woman. Multiphase helical CT scan, MRI appearances and differential diagnoses are discussed.