期刊
NEUROSURGERY
卷 65, 期 3, 页码 429-437出版社
OXFORD UNIV PRESS INC
DOI: 10.1227/01.NEU.0000349930.66434.82
关键词
Invasion; Ki-67; MIB-1; Pituitary tumors; Recurrence; Tumor size
资金
- Jarislowsky Foundation
- Lloyd Carr-Harris Foundation
KI-67, A MARKER of cellular proliferation, has been studied extensively in pituitary neoplasia. it is of relevance to various clinicopathological parameters, including tumor subtype, size, invasiveness, and recurrence, as well as patient age and sex. Generally, pituitary tumors behaving aggressively have increased Ki-67 labeling indices. Nonetheless, there is considerable overlap in Ki-67 labeling between noninvasive and invasive adenomas as well as between adenomas and pituitary carcinomas. Not only is there no general agreement regarding the relationship of Ki-67 labeling index and tumor invasiveness, but the same is also true of the association with pituitary tumor size, growth fraction, and recurrence. Whereas a number of studies found conclusive associations of Ki-67 labeling indices with aggressive behavior, size, and/or adenoma subtype, others fail to do so. It is evident that discrepant data regarding tumor behavior in part has its basis in nonuniform study criteria. For example, different investigators use varying criteria of tumor invasion and recurrence. Herein, we review the literature relating Ki-67 expression and various other clinicopathological parameters and conclude that uniform definitions and methods, as well as new markers, are key to improved treatment of pituitary tumors.
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