Abstract 
Patient: male,39, limited to one month of hospitalization due to a pain in the neck.
History: More than a month ago, the patient suffered from a pain in the neck, accompanied by slight neck rotation restriction, and muscle weakness, which continued to spread, until the movement of the upper neck part is limited. He can only lie flat on his back, unable to raise or rotate his head, and can only sit up or stand for a short time with both hands holding his mandible.
Physical examination: upper cervical local tenderness, active head rotation function is lost,muscle strength of the extremities grade 5, Biceps Jerk Rt (++), Lt (++),Triceps Rt (++), Lt (++),Brachioradialis Jerk Rt (++), Lt (++),Knee Jerk Rt (++), Lt (++),Anlle Rt (++), Lt (++),Hoffmann sign Rt (-),Lt(-),Babinski sign Rt (-),Lt(-).
Bone scan: Central photon defect with surrounding increased uptake in the C2 spine, metastasis.
PET-CT(whole Body):1. Focal heterogenous hypermetabolic mass-like lesion in the left kidney abutting the left retroperitoneal area, malignancy. 2. Bony destruction with focal hypermetabolism in the C2 spine, metastasis.