SAA has a poor prognosis, death usually occurred within 6 months.
SAA的临床预后差，死亡率高，自然病程6个月左右。
But the ventricular tachycardia has a poor prognosis if its primary diseases are severe.
室性心动过速若原发病严重，则预后很差。
Skin metastasis from hypopharyngeal carcinoma appears to be refractory to radiotherapy and chemotherapy and has a poor prognosis.
下咽 癌合并远处 皮肤 转移极为少见，并且似乎对同时 性的放射治疗合并化学治疗反应不佳。
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