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REPLY
To the Editor.
—I appreciate the opportunity to comment on Dr. House's letter. As noted from the article by myself and Dr. Talbot, certainly we do believe that the incidence of acoustic neurilemoma is closer to the 0.8% than it is to the 2.5%, as presented by Hardy and Crowe.I agree with Dr. House's premise that acoustic neurilemomas do continue to enlarge gradually over a period of years, and that there is little evidence to show that these tumors do in fact stop their growth. I believe that there are certainly differences in the age of onset of tumorous growths, and I believe that there are biologic differences in the rate of growth in individual tumor masses. If one adheres to this concept, then those having an onset later in life and having a slow growth would constitute the group that would give no symptoms. Tumors of an