Changes

*Occurs in middle-aged and elderly individuals

*Occurs in middle-aged and elderly individuals

*Males >> Females

*Males >> Females

*One of the most common specific subtypes of PTCL<ref>{{Cite journal|last=J|first=Vose|last2=J|first2=Armitage|last3=D|first3=Weisenburger|date=2008|title=International peripheral T-cell and natural killer/T-cell lymphoma study: pathology findings and clinical outcomes|url=https://pubmed.ncbi.nlm.nih.gov/18626005/|language=en|pmid=18626005}}</ref>

*One of the most common specific subtypes of PTCL

**15-30% of non-cutaneous T-cell lymphomas

**15-30% of non-cutaneous T-cell lymphomas

**1-2% of all non-Hodgkin lymphomas

**1-2% of all non-Hodgkin lymphomas