“…In the MRI study of the spine in children with NF1, characteristics found more often in patients with than without internal neurofibromas included scoliosis (71.4% vs. 30.4%), subcutaneous neurofibromas (71.4% vs. 39.1%), and plexiform neurofibromas (28.6% vs. 8.7%); none of these differences was statistically significant, ( P = 0.08, P = 0.22, and P = 0.17, respectively), possibly because statistical power was limited
[28]. Furthermore, patients with subcutaneous neurofibromas were at higher risk for mortality in two different NF1 populations, from France
[33] and North America
[21], respectively. Finally, xanthogranulomas were independently associated with internal neurofibromas in our study.…”