Hi..I Had A Nuclear Body Test Done Last Wk Just

Hi..I had a nuclear body test done last wk just received a letter from the place I did it I can't get my dr to give me a call back but I don't know if you guys can help I need to know what it means.. Photopenic change in the mid to low thoracic spine; the absence of increased reactivity speaks to a benign or low-grade etiology.