[名词解释] 伤害(injury)

试述抑郁症有哪些临床表现? 关于鼻窦黏液囊肿的描述，正确的是() ["A．好发于上颌窦","B．CT表现为窦腔内较低软组织密度影，有增强","C．病变边缘不规则，分叶状","D．窦腔类圆形膨胀增大","E．窦壁骨质多正常"] 物质滥用的种类及危害性是什么? CT示咽旁间隙向外移位，提示占位性病变来源于() ["A．腮腺","B．鼻咽","C．颌下腺","D．腺样体","E．颈深淋巴结"] 心理社会发展失调(disturbepsychosocialdevelopment) 伤害(injury)