选择性淋巴结切除的英文：
ELND, elective lymph node dissection

elective是什么意思：
a. 选举的,根据选举的,选任的
n. 选修课程

This is a direct election.
这是直接选举。

He was unanimously elected as President.
人们一致选举他当总统。

The elections were free and fair.
选举是自由公正的。

lymph是什么意思：
n. 淋巴（液）；血清

This is a normal lymph corpuscle.
这是正常的淋巴球。

Regional lymph nodes become swollen and eventually ulcerate.
局部淋巴结先是肿胀而最后发生溃疡。

Regional lymph nodes become swollen and eventually ulcerate
局部淋巴结先是肿胀而最后发生溃疡。