Clinical question: Schwannoma, 3 months follow up lumbar tumor resection. Signs and symptoms: As above. Pre-and post-enhanced lumbar MRI:Since prior exam there is significant decreased enhancement of cauda equina at L1 -- L2 surgical site compared to prior study. Posteriorly at the L2 level within the cauda equina there is a small focus of solid enhancement measuring approximately 2.5 x 3-mm in transaxial dimensions (axial post enhanced series 901 image 37 sagittal post enhanced series 801 image 7) highly suggestive of a small schwannoma.Tiny focus of enhancement at the T10 -- T11 disk level identified only on sagittal series and measuring approximately 9 mm in cranial cephalad access and as well suspected of additional schwannoma. This region was not included on prior exam.Multiple small additional intradural enhancing lesions consistent with patient's known schwannomas are again identified and without change. The largest of these lesions is at lower L5 level and measuring a maximum of 10.7-mm in size very similar to prior study.
1.Significant to near complete resolution of enhancement at the surgical site at L1 -- L2 level since prior study.2.Tiny solidly enhancing schwannoma measuring at 2.5 x 3 mm within the cauda equina at L2 level is identified.3.Multiple additional schwannomas are again identified without interval change.4.A small schwannoma at T10 -- T11 disk level within the spinal canal was not included in the field of prior study.