"According to this classification, these lesions are further subclassified in type a (single-hole) or type b (multiple-hole) fistulas."
"According to this classification, these lesions are further subclassified in type a (single-hole) or type b (multiple-hole) fistulas."
Expected headings
"Structure"
"Prognosis"
"Zipfel's modification"
"equivalent to Cognard type III, IV and V"
"Zipfel et al 3 have suggested a modification to the Borden classification by integrating data on mode of presentation on estimating the risk of new intracranial haemorrhage or neurological non-haemorrhagic deficits. Since cortical venous drainage is deemed important for risk assessment, the changes regard only Borden types II and III, further subdividing them into symptomatic (2S, 3S), or asymptomatic (including tinnitus or orbital phenomena; 2A, 3A)."