Table 1.

Medical conditions, involving SIJ

Rheumatic inflammatory diseases	Rheumatic noninflammatory diseases	Infectious diseases	Other diseases
Ankylosing spondylitis and other SpA	Osteitis condensans ilii	Pyogenic sacroiliitis	Hyperparathyroidism
Familial Mediterranean fever	Diffuse idiopathic skeletal hyperostosis	Brucellosis	Lymphoma and other malignancies
Bechet’s disease	Osteoarthritis	Tuberculosis
SAPHO (synovitis, acne, pustulosis, hyperostosis, osteitis)	Multicentric reticulohistiocytosis	Whipple disease
Gout and pseudogout

Abbreviations: SIJ, sacroiliac joint; SpA, spondyloarthritis.