Tuberculous sacroiliitis with secondary psoas abscess in an older patient: a case report

Background Tuberculosis is the leading infectious cause of death worldwide. Among native Swiss people, tuberculosis is more common in older people than in younger people. Approximately 25–30% of reported cases of tuberculosis are purely extrapulmonary; skeletal tuberculosis is reported in 3–5% of cases. The purpose of this case report is to draw attention to the diagnostic challenge of tuberculous sacroiliitis with secondary psoas abscess, as this clinical picture is very rare.