英语语法分析

The incidence of umbilicated indentation in astrocytoma, cerebral metastases and brain abscess was nearly the same, showing no value in qualitative diagnosis.

环壁脐样凹陷在星形细胞来源肿瘤、脑转移瘤、脑脓肿三者中出现率相近，无明显定性价值。

By March 7, the rash had worsened, with umbilicated lesions with an erythematous base, mostly on the hands, forearms, neck, chest, face, and knees, encompassing 50% of the keratinized skin.

3月7日皮疹加重，红斑基础上的脐状皮损主要在双手、双前臂、颈、胸、面和双膝，包绕角质化皮肤的50%。