I.F. FAYRUSHINA1, 2, E.R. KIRILLOVA1, 2, D.I. ABDULGANIEVA1, 2 1Kazan State Medical University, Kazan 2Republic Clinical Hospital, Kazan  Contact details: Fayrushina I.F. — PhD (Medicine), Assistant Lecturer of the Department of Hospital Therapy, rheumatologist, ultrasound specialist Address: 49 Butlerov St., Kazan, Russian Federation, 420012, tel.: +7-987-186-26-56, e-mail: sirenif@mail.ru Psoriatic arthritis (PsA) is a chronic progressive disease with heterogeneous clinical […]