News from Mayo Clinic Print 2023Mayo Clinic advances research on mysterious blood vessel disease Sept. 16, 2023, 11:00 a.m. CDT Request an appointment Costs & insuranceReferrals April 01, 2020 Share on: FacebookTwitter SectionsRequest an AppointmentOverviewTests & proceduresConditions treatedDoctorsSpecialty groupsExpertise & rankingsClinical trialsResearchCosts & insuranceNews from Mayo ClinicReferrals ORG-20476802 Medical Departments & Centers Rheumatology