Lumbar spine:
There are post-surgical appearances secondary to partial resection of a right lumbosacral plexiform neurofibroma. Root stumps of the resected right L4, L5, S1, S2 and S3 nerves, with a swollen right L5 nerve root stump are noted.
Compared to the previous MRI (not shown and performed in another center), there was an increase in size of the neoplastic tissue occupying the spinal canal from L2 to S1, particularly the L5 nerve root.
Thickening and enlargement of the residual roots and branches of lumbosacral plexus, in particular the right L2 and L3 nerve roots and left L4, L5, S1, S2 and S3 roots (previously not involved).
Thickened and swollen the pelvic tract of the right femoral nerve.
Pelvis:
Post surgical changes in the right pelvis and adjacent the right proximal femur secondary to surgical resection of the right sciatic nerve, gluteus maximus, hamstrings and external rotators of the right hip. There is a fluid collection around the right hip.
Marked reduced trophism and altered signal of the right residual gluteal muscles, adductors, obturators, piriformis and the anterior compartment muscles of the right thigh due to chronic denervation. The right paraspinal muscles are also hyperintense on T2 sequences secondary to subacute denervation
In the left ovary there is a thick walls cystic lesion with strong peripheric enhancement likely a corpus luteum.