I was intrigued to see this report of Myomin, an aromatase inhibitor that decreases estrogen, being helpful for neurofibromatosis, both with NF listed as something it might help with, a case of someone's tumors decreasing with it, and also helping to dissolve other tumors, particularly hormone-sensitive ones.
Myomin: Aromatase Inhibitor for Estrogen-Dominant Disorders
The National Institute on Health information on flaxseed (http://www.nlm.nih.gov/medlineplus/druginfo/natural/991.html) states:
"Because flaxseed might act somewhat like the hormone estrogen, there is some concern that flaxseed might make hormone-sensitive conditions worse. Some of these conditions include breast, uterine, and ovarian cancer; endometriosis; and uterine fibroids. However, some early laboratory and animal research suggests that flaxseed might actually OPPOSE estrogen and might be protective against hormone-dependent cancer. Still, until more is known, avoid excessive use of flaxseed if you have a hormone-sensitive condition."