超声显示睾丸非均匀性肿大并实质内血流信号丰富,应首先考虑为() ["急性睾丸炎","急性附睾炎","急性睾丸扭转","急性睾丸附件扭转","睾丸肿瘤"]
通风机的分类标准不包括() ["按作用原理","按用途","按转数","按电机功率"]
关于多发性骨髓瘤的X线表现,下列哪项错误() ["常见弥漫性的骨质疏松","病变好发于脊椎、肋骨、颅骨和骨盆","骨破坏区无硬化边","无软组织肿块","椎弓一般不受累"]
腹膜后出血() ["肾包膜下出血可见包膜下液暗区","肾周出血可见肾周液暗区,包膜下不完整","A+B","不规则无回声或低回声区,一般为扁平型,即前后径小,上下径大","A+B+D"]
红细胞沉降率加快见于() ["良性肿瘤","结核病静止期","遗传性球形红细胞增多症","系统性红斑狼疮","心绞痛"]
简述鳞状细胞癌的临床表现。