男性，30岁，主诉乏力3个月，伴左上腹饱胀感。体检：浅表淋巴结未及，肝未及．脾肋下5cm，HB90/L，白细胞170×109/L，血小板300×109/L，原粒0.01，晚幼粒0.4，杆粒0.34，分叶粒0.1，嗜酸性粒细胞0.02，NAP—。
要进一步检查需作
A．51铬红细胞半寿命期
B．染色体
C．MRI
D．同位素骨扫描
E．淋巴管造影
参考答案：B
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