Dx: Idiopathic granulomatous mastitis ➡️median age: 30 yo ➡️usually 2yrs after breast feeding ➡️RF: hyperprolactinemia, leads to pro-inflam effect ➡️Extra-mammary manifestat: arthralgia, episcleritis, skin changes mimicking autoimm dz ➡️Tx: steroid + AZA vs MTX #ACR23 @RheumNow https://t.co/lGT2UUIkoM