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Seronegative spondyloarthropathy-related sacroiliitis: CT, MRI features and differentials.

Prakash D, Prabhu SM, Irodi A - Indian J Radiol Imaging (2014)

Bottom Line: Seronegative spondyloarthropathy is a group of chronic inflammatory rheumatic diseases that predominantly affect the axial skeleton.Involvement of sacroiliac joint is considered a hallmark for diagnosis of seronegative spondyloarthropathy and is usually the first manifestation of this condition.We present a pictorial essay of CT and MRI imaging findings in seronegative spondyloarthropathy-related sacroiliitis in various stages and highlight common differentials that need to be considered.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiology, Christian Medical College, Vellore, Tamil Nadu, India.

ABSTRACT
Seronegative spondyloarthropathy is a group of chronic inflammatory rheumatic diseases that predominantly affect the axial skeleton. Involvement of sacroiliac joint is considered a hallmark for diagnosis of seronegative spondyloarthropathy and is usually the first manifestation of this condition. It is essential for the radiologist to know the computed tomography (CT) and magnetic resonance imaging (MRI) features of spondyloarthropathy-related sacroiliitis as imaging plays an important role in diagnosis and evaluation of response to treatment. We present a pictorial essay of CT and MRI imaging findings in seronegative spondyloarthropathy-related sacroiliitis in various stages and highlight common differentials that need to be considered.

No MeSH data available.


Related in: MedlinePlus

Normal anatomy of the sacroiliac joint in a 26 year old male. (A) Oblique coronal STIR MRI images show smooth and parallel margins of the cartilaginous lower ventral portion of the joint (arrows). (B) Oblique coronal STIR MRI images in more posterior aspect show irregular edges of the fibrous or ligamentous upper dorsal portion of the joint (arrows). Distinction between compartments of sacroiliac joints is possible on MRI images
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Figure 1: Normal anatomy of the sacroiliac joint in a 26 year old male. (A) Oblique coronal STIR MRI images show smooth and parallel margins of the cartilaginous lower ventral portion of the joint (arrows). (B) Oblique coronal STIR MRI images in more posterior aspect show irregular edges of the fibrous or ligamentous upper dorsal portion of the joint (arrows). Distinction between compartments of sacroiliac joints is possible on MRI images

Mentions: The SI joint has two parts, a lower ventral part which is predominantly cartilaginous and an upper dorsal part which is a fibrous joint [Figures 1 and 2]. The cartilaginous segment has smooth and parallel margins, while the fibrous segment shows irregular margins. Bone marrow edema in seronegative spondyloarthropathy-related sacroiliitis predominantly involves the lower and posterior part of the joint. Normal anatomic variants of SI joint include accessory SI joint (seen in the posterosuperior portion of the joint) [Figure 3], bipartite iliac bone plate [Figure 3], and iliosacral complex.[1]


Seronegative spondyloarthropathy-related sacroiliitis: CT, MRI features and differentials.

Prakash D, Prabhu SM, Irodi A - Indian J Radiol Imaging (2014)

Normal anatomy of the sacroiliac joint in a 26 year old male. (A) Oblique coronal STIR MRI images show smooth and parallel margins of the cartilaginous lower ventral portion of the joint (arrows). (B) Oblique coronal STIR MRI images in more posterior aspect show irregular edges of the fibrous or ligamentous upper dorsal portion of the joint (arrows). Distinction between compartments of sacroiliac joints is possible on MRI images
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4126143&req=5

Figure 1: Normal anatomy of the sacroiliac joint in a 26 year old male. (A) Oblique coronal STIR MRI images show smooth and parallel margins of the cartilaginous lower ventral portion of the joint (arrows). (B) Oblique coronal STIR MRI images in more posterior aspect show irregular edges of the fibrous or ligamentous upper dorsal portion of the joint (arrows). Distinction between compartments of sacroiliac joints is possible on MRI images
Mentions: The SI joint has two parts, a lower ventral part which is predominantly cartilaginous and an upper dorsal part which is a fibrous joint [Figures 1 and 2]. The cartilaginous segment has smooth and parallel margins, while the fibrous segment shows irregular margins. Bone marrow edema in seronegative spondyloarthropathy-related sacroiliitis predominantly involves the lower and posterior part of the joint. Normal anatomic variants of SI joint include accessory SI joint (seen in the posterosuperior portion of the joint) [Figure 3], bipartite iliac bone plate [Figure 3], and iliosacral complex.[1]

Bottom Line: Seronegative spondyloarthropathy is a group of chronic inflammatory rheumatic diseases that predominantly affect the axial skeleton.Involvement of sacroiliac joint is considered a hallmark for diagnosis of seronegative spondyloarthropathy and is usually the first manifestation of this condition.We present a pictorial essay of CT and MRI imaging findings in seronegative spondyloarthropathy-related sacroiliitis in various stages and highlight common differentials that need to be considered.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiology, Christian Medical College, Vellore, Tamil Nadu, India.

ABSTRACT
Seronegative spondyloarthropathy is a group of chronic inflammatory rheumatic diseases that predominantly affect the axial skeleton. Involvement of sacroiliac joint is considered a hallmark for diagnosis of seronegative spondyloarthropathy and is usually the first manifestation of this condition. It is essential for the radiologist to know the computed tomography (CT) and magnetic resonance imaging (MRI) features of spondyloarthropathy-related sacroiliitis as imaging plays an important role in diagnosis and evaluation of response to treatment. We present a pictorial essay of CT and MRI imaging findings in seronegative spondyloarthropathy-related sacroiliitis in various stages and highlight common differentials that need to be considered.

No MeSH data available.


Related in: MedlinePlus