Fig. 2.
Changes in vestibular schwannoma (VS) growth rates after surgery for the first tumor. The origin of the timeline corresponds to the surgery of the first VS. Tumor size is expressed as a fraction of the baseline tumor mean tumor diameter (MTD), defined as the MTD of each tumor at the time of first surgery. Tumor groups as defined by regression analysis are represented as follows: group 1, black circles; group 2, gray triangles; and group 3, white circles. Slopes and R2 values are indicated.