Print Departments and specialties Mayo Clinic has one of the largest and most experienced practices in the United States, with campuses in Arizona, Florida and Minnesota. Staff skilled in dozens of specialties work together to ensure quality care and successful recovery. Departments that treat this condition Endocrinology By Mayo Clinic Staff Request an Appointment at Mayo Clinic Diagnosis & treatment Oct. 04, 2016 Print Share on: FacebookTwitter Klinefelter syndromeSymptoms & causesDiagnosis & treatmentDoctors & departments Research: It's All About Patients CON-20194212 Patient Care & Health Information Diseases & Conditions Klinefelter syndrome