Swollen, painful areas in both axillae: Reactivation of Crohn's?

I have Crohn’s disease and had to stop taking Stelara last year due to recurrent illnesses. Just before Christmas, 2024 I developed swollen, painful areas in both axillae. My GI doctor, my PCP, an infectious disease doctor, and a hematologist/oncologist have no idea what caused this. A CTA showed a collection of fluid in my axillae. Could this be a reactivation of Crohn’s after being in remission? Has anyone had this experience?