hi..neurofibromas are most of the time benign ..n myxoid neurofibroma is a very rare condition n need evalution most of the times, tht is yearly evaluations of the nervous system and hearing and cardiac profile for any myxomas. do let me know tht apart 4m these two lumps r u having ani other signs or symptoms??? do u have many birthmarks( common term for cafe-au-lait spots, ), any family history?? any history of nerve pain??was ani CTscan or MRI done 4 u?any IHC test like S-100 ? aniwa since u mentioned tht u r almost asymptomatic..its a good news. its better to remove them surgically, bcoz some neurofibroma develop a tendency to grow in size n turn malignant. Most tumors caused by neurofibromatosis do not need treatment. But, tumors that are painful, disfiguring, rapidly growing, and impairing the function or compressing other body parts may need treatment. n ya since neurofibroma r associated with genetic disorder called neurofibromatosis, there r chances tht the offspring might get affected too.so if in case u r diagnosed as a case of neurofibromatosis its an advice from my side to go for a genetic counselling once u plan a pregnancy. there s nothing much to b worried about 1 or neurofibromas... they bcum a trouble wen they cause sum cosmetic effects like those on face, arms,etc. takecare.