Anna asks Dare I ask then why you, our favorite good Anglican, chose my daffynition, misspelled as flange was?

And the answer is: "peri-" is a prefix which appears in lots of medical terms meaning around or surrounding. A flange/phlange does that. The rest of the term had a nice Greco-Roman ring (no pun intended) to it. So I picked Anna's definition, in part as a feint, a dodge, a crude attempt to deflect respondents to her answer.