[Hamartoma of the internal auditory canal and cerebropontile space in a child. Trans-temporo-extradural excision methods].

A progressive facial paralysis in a child of 14 years allowed the diagnosis of a hamartoma to be made. The discovery of such a benign lesion should always be followed by a search for other lesions elsewhere, i.e. to see if there is not a phacomatosis. Persistent sciatic pains which this child now has lead one to fear a second lesion, compressing a nerve root or trunk of the sciatic nerve. There is a strong possibility that this tumor of the auditory canal is only the first manifestation of a neurocristopathy.