proliferative index


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proliferative index

Abbreviation: PI
The proportion of cells within a tumor specimen that are actively reproducing. In general, as the number of replicating cells in a tumor increases, the cancer behaves more aggressively and the prognosis for the patient worsens.
See also: index
References in periodicals archive ?
Proliferative index in phaeochromocytomas: does it predict the occurrence of metastases?
section]) Assayed on blood samples from year 2 as described earlier (9) by using a proliferative index threshold set to 3x the index of a negative control stimulant (phosphate buffer).
Regarding the neoplastic potential of NMCs, Mitchell et al reported that they had found proliferative index marker Ki-67 activity in an NMC lesion, and they suggested that it is a slow-growing neoplasm.
Moreover, tumor size and proliferative index were associated with the presence of mammaglobin, CK19, or both RNAs in plasma (8).
N-acetylcysteine suppression of the proliferative index in the colon of patients with previous adenomatous colonic polyp.
Zelenetz spoke of recent research suggesting that the prognostic factor of the proliferative index (PI) as determined by quantitative image analysis (QIA) in mantle cell lymphoma is robust.
3] Ki-67 proliferative index more than 6% is most common in malignant tumors.
In addition to area of endometrium the proliferative index included in our study was the percentage of mitotic figures.

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