Doxycycline in Cutaneous Schwannoma (NF2)

Injections between 0.1 ml to 4 ml of 10mg/ml doxycycline hyclate will be administered to a maximum of three tumors per patient. The dose administered will be calculated based on tumor size, not to exceed the estimated volume of the tumor or a maximum of 4 ml. Injection of 1% lidocaine may be given pre-doxycycline to reduce injection pain.