These following inferences can be inferred in this patient with known neurofibromatosis:

1. Dural ectasia and posterior vertebral scalloping - both associated with neurofibromatosis.
2. A neuropathic bladder - due to the consequences of neurofibromatosis
3. Chronic changes in soft tissues of the left buttock from a prior complex soft tissue infection due to immobilization due to spinal disease. No acute osteomyelitis of soft tissue collection.