Table II.

Size of tumour in II and III series.

II series of 51 cases IN eligibility criteria 19 cases	Average Ø 8.63 mm Range 3-15 mm
OFF eligibility criteria 32 cases	Average Ø 11 mm Range 1-27 mm
III series of 64 cases IN-eligibility criteria 29 cases	i.c. 18 Average Ø 7.3 mm Range 4-9 mm c.p.a. 11 Average Ø 6 mm Range 4-8 mm
OFF-eligibility criteria 35 cases	i.c. 11 Average Ø 6.8 mm Range 4-10 mm c.p.a. 24 Average Ø 11.2 mm Range 1-26 mm

i.c.: intracanal tumor

c.p.a.: cerebello-pontine-angle tumor