Fig. 3

Coronal contrast-enhanced images of the change in cephalocaudal tumor cavity diameter after transsphenoidal surgery in 2 cases. A–B, C–D are from the same patient, respectively. A Before surgery, the cephalocaudal tumor cavity diameter is 24.84 mm. B After surgery, the cephalocaudal tumor cavity diameter is 20.38 mm, and the change in cephalocaudal tumor cavity diameter after transsphenoidal surgery of this patient is 24.84–20.38 mm. C Before surgery, the cephalocaudal tumor cavity diameter is 27.42 mm. D After surgery, the cephalocaudal tumor cavity diameter is 11.48 mm, and the change in cephalocaudal tumor cavity diameter after transsphenoidal surgery of this patient is 27.42–11.48 mm