英语语法分析

Leptomeningeal melanosis is malignant in 40-50% of patients with neurocutaneous melanosis.

在40 - 50%的神经皮肤黑变病的患者中软脑膜黑色素沉着是恶性的。

Objective To investigate the clinical application of the sural neurocutaneous island vascular flap.

目的探讨腓肠神经伴行血管岛状皮瓣的临床应用。

Objective To explore the effect of the revered sural neurocutaneous flap in reconstruction of leg defects.

目的：探讨逆行腓肠神经营养血管皮瓣修复下肢软组织缺损的临床效果。