患者男,17岁,因“左颈部酸痛伴活动受限半年”入院。查体:颈向左侧倾斜,颈左侧中部局部触痛,未触及明显包块,颈部活动明显受限,肌力及肌张力正常,四肢及躯干感觉正常,生理反射正常,病理反射未引出。X线片示:C5左侧附件见一大小约26mm×20mm致密影,轻度膨胀性变,边缘较清楚,中央 Male patient, 17 years old, was admitted to hospital for “six-year restricted activity with left-sided pain.” Examination: the left side of the neck tilt, the middle of the left neck tenderness, did not reach the obvious mass, neck activity was significantly limited, normal muscle strength and muscle tone, limbs and trunk feel normal, normal physiological reflex, pathological reflexes Lead. X-ray film shows: C5 left Annex see a size of about 26mm × 20mm compact shadow, mild swelling of the change, the edge more clearly, the central