[Solitary spinal osteochondroma. Apropos of 4 cases].

The spinal osteochondroma has been studied in 4 personal cases. This benign tumor unfrequently develops on the spine and even less insolitary. In the 4 cases reported, the sites of the tumor were thoracic (2 cases) cervical (1 case), cervicothoracic (2 cases) which are most frequently mentioned in publications.

[Current diagnostic criteria for intracranial epidermoid and dermoid cysts].

The authors report a recent series of 12 intra-cranial epidermoid and dermoid cysts. After they had reminded the main classical radiological and clinical signs which are rarely specific, they study C.T.