Epidural enhancing lesion in the spine.

Dear Sir, Before 8 months it was detected from my MRI scan that there is an EPIDURAL ENHANCING LESION in my lower back spine. Lesion size is @ 15mm X 20mm. MRI was taken after three days of bike accident which led to sever pain in the back bone. Dr. advised me to take MRI again after a few months for checking the status of LESION and to decide about the requirement of surgery. Still I have bearable pain in my lower back spine. I am about to take the MRI once again. Query: 1) Will it be required to go for a surgery to treat this LESION ? 2) If so, is there any non-surgical treatment to cure this? 3) If surgery is the only option, then will it be an endoscopy type or the traditional cut-open type? Thanks in advance for your kind answers.