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 Indian J Med Microbiol  
 

Figure 13 (A-D): Infective sacroiliitis. (A) Oblique coronal STIR MR image through sacroiliac joint in a 19 year old female shows left sacroiliitis with bone marrow edema (white arrow) and widening of joint space (black arrow). (B) Coronal STIR MRI image of pelvis shows muliple surrounding hyperintense collections suggesting infective sacroiliitis (white arrow). (C) Axial T1W MRI image in another patient with infective sacroiliitis shows right sacroiliitis with bone marrow edema, subchondral erosions, and joint space widening (black arrow). (D) Axial T2W MRI image in the same patient shows bone marrow edema, subchondral erosions, and joint space widening (black arrow) with multiple surrounding hyperintense soft tissue collections in the right gluteal region (long white arrow) and sinus tract extending upto the overlying skin (short white arrow)

Figure 13 (A-D): Infective sacroiliitis. (A) Oblique coronal STIR MR image through sacroiliac joint in a 19 year old female shows left sacroiliitis with bone marrow edema (white arrow) and widening of joint space (black arrow). (B) Coronal STIR MRI image of pelvis shows muliple surrounding hyperintense collections suggesting infective sacroiliitis (white arrow). (C) Axial T1W MRI image in another patient with infective sacroiliitis shows right sacroiliitis with bone marrow edema, subchondral erosions, and joint space widening (black arrow). (D) Axial T2W MRI image in the same patient shows bone marrow edema, subchondral erosions, and joint space widening (black arrow) with multiple surrounding hyperintense soft tissue collections in the right gluteal region (long white arrow) and sinus tract extending upto the overlying skin (short white arrow)