 Gleason scores are often grouped together, based on similar behaviour: Grade 2-4 being well-differentiated neoplasm , Grade 5-6 intermediate-grade neoplasm , Grade 7 moderately - poorly differentiated grade neoplasm, Grade 8-10  high-grade neoplasm.
<meaning-changed>  Gleason scores are often grouped together, based on similar behaviour: Grade 2-4 being well-differentiated neoplasm , Grade 5-6 intermediate-grade neoplasm , Grade 7 moderately - poorly differentiated grade neoplasm, Grade 8-10  high-grade neoplasm.
 Gleason scores are often grouped together, based on similar behaviour: Grade 2-4 being well-differentiated neoplasm , Grade 5-6 intermediate-grade neoplasm , Grade 7 as moderately to poorly differentiated (either 3+4=7, where the majority is pattern 3, or 4+3=7 in which pattern 4 dominates and indicates less differentiation., and Grade 8-10 high-grade neoplasm.