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 ?
The proliferative index was slightly elevated in papillomas (mean Ki-67 LI, 4.
These neoplasms showed an increased proliferative index as measured by Ki-67 expression (mean LI, 15.
In the present study, the proliferative index as demonstrated by nuclear immunoreactivity with the MIB-1 monoclonal antibody was increased in the papillary carcinoma group with good discriminatory power between low- and high-grade lesions (discriminatory power, .
KIP1] expression correlated with the proliferative index in 90 cases of NHL, including 5 cases of MCL.
KIP1] expression is inversely proportional to the proliferative index.
The Ki-67 (MIB-1) proliferative index was lower in the oncocytic component (2%) than in the mucinous area (54%) of the tumor (Figure 4).

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