Parenchymal and venous changes (20%) included an increased or irregular accumulation of contrast medium, obstruction or stasis of vein (1.8%).

实质和静脉改变(20%)：实质期胰腺轮廓内的对比剂浓度降低或不规则加深；静脉阻塞、血流淤滞(1.8%)。

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The disease is mainly identified by a fast-growing, irregular dark spot on previously normal skin or in an existing mole that changes in size, colour or texture.

该疾病表现为在之前正常皮肤上出现长大迅速、不规律的黑斑，或者原有的黑痣其大小、颜色或质地发生改变。

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Channel changes in the irregular nature of the mobile node, adding or withdrawal from the network topology can also lead to other changes.

无线信道变化的不规则性、节点的移动、加入、退出等都会引起网络拓扑结构的动态变化。

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