[Spontaneous cerebrospinal rhinorrhea: role of computerized opaque cisternography].

Spontaneous CSF rhinorrhoea, secondary to trauma in the great majority of cases, is very rare (3-4%). The authors report a case of spontaneous CSF rhinorrhoea secondary to an ethmoidal osteodural defect, diagnosed by digital cisternography and confirmed by the surgical operation. The value of digital opaque cisternography and its place in the diagnostic arsenal are discussed.