Common site for CSF Rhinorrhoea is ?
The cribriform plate and air cells of the ethmoid sinus account for maximum number of CSF leaks, i.e., through anterior cranial fossa. Other sites are frontal sinus, area of sellatursica and sphenoid sinus. Rare sites of leak are middle or posterior cranial fossa and CSF can reach the nasal cavity by way of the middle ear and Eustachian tube. Traumatic leak - Cribriform plate and ethmoidal air cells. Spontaneous (non-traumatic) leak - Cribriform plate.
Ethmoidal sinus
Frontal sinus
Petrous
All