[Spontaneous rhinorrhea due to (congenital?) evagination of arachnoidea in the paranasal sinuses].
Report on two cases of spontaneous, intermittent and long lasting spinal fluid rhinorrhea. The lesion responsible of the spinal fluid fistula is a glio-arachnoid expansion of the convexity of the frontal pole, contained into a fibrous pedicle ; it crosses the dura mater and penetrates, through a well individualized bone orifice, into the posterior wall of the frontal sinus or into an ethmoid-frontal cell. This arachnoid diverticle is not associated with an hydrocephalon. In the absence of any traumatic past history, its congenital nature may be admitted. No para-clinical investigation makes possible to detect such a minor abnormity ; the isotopic transit of the spinal fluid may remain silent, when performed at a moment of drying up of the nasal flow. Surgical exploratory study of the anterior level has to be complete, while numerous independent diverticles may coexist.
D000328:Adult; D001099:Arachnoid / Q000002:abnormalities* / Q000473:pathology / Q000601:surgery; D002559:Cerebrospinal Fluid Rhinorrhea / Q000209:etiology* / Q000473:pathology / Q000601:surgery; D005402:Fistula; D006801:Humans; D008297:Male; D008875:Middle Aged; D010256:Paranasal Sinuses / Q000002:abnormalities* / Q000473:pathology
Rhinorrhée spontanée parévagination (congénitale?) de l'arachnoïde dans les sinus para-nasaux