脑出血发病率高，预后很差。
Intracerebral hemorrhage has high incidence and poor prognosis.
肝细胞癌是一种预后很差的侵袭性肿瘤。
Hepatocellular carcinoma (HCC) is an aggressive tumor with poor long-term prognosis.
室性心动过速若原发病严重，则预后很差。
But the ventricular tachycardia has a poor prognosis if its primary diseases are severe.
髓母细胞瘤是多发于儿童小脑的恶性肿瘤，其预后很差。
Medulloblastoma is the common malignant tumor with poor prognosis in cerebellum of child.
在大多数情况下，预后很差：仅2%至3%的患者能存活五年以上。
For most, the prognosis is poor: only 2% to 3% survive for five years or more.
摘要口腔颌面-头颈部是黏膜黑色素瘤的高发部位，该病侵袭性强，易发生区域和远处转移，预后很差，临床治疗有很大的难度。
Abstract : Oral and maxillofacial-head and neck are region with high incidence of mucosal melanoma. The neoplasm is rare but aggressive, with high incidence of regional or distant metastasis.
摘要口腔颌面-头颈部是黏膜黑色素瘤的高发部位，该病侵袭性强，易发生区域和远处转移，预后很差，临床治疗有很大的难度。
Abstract : Oral and maxillofacial-head and neck are region with high incidence of mucosal melanoma. The neoplasm is rare but aggressive, with high incidence of regional or distant metastasis.
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