Keywords:
Musculoskeletal spine, Bones, CT, MR, Digital radiography, Localisation, Imaging sequences, Diagnostic procedure, Neoplasia, Education and training
Authors:
E. Gezmis1, G. Özcan Söylev1, F. Ulu Öztürk2; 1Izmir/TR, 2Ankara/TR
DOI:
10.1594/essr2016/P-0007
Imaging findings OR Procedure Details
Lumbosacral spine and sacroiliac joint x-rays revealed no abnormality (Figure 1).
The result of lumbar spine magnetic resonance imaging (MRI),
which was performed to rule out lumbar disc herniation,
were also normal.
Sacroiliac joint MRI showed a 2 cm in size,
slightly expansile nodular lesion on the right transverse process of S3th vertebra with central hypointensity at all sequences and hyperintense enhancing peripheral rim.
There was bone marrow edema around the lesion and the lesion was also extending towards the adjacent muscles causing soft tissue swelling and edema (Figure 2).
Sacral computerized tomography (CT) depicted welldemarcated hyperdense sclerotic nodular lesion about 2 cm in size,
with its hypodense peripheral rim extending beyond the anterior cortex,
on the right transverse process of S3th vertebra.
A 0.3 cm nidus was also detected at the center of reactive bone sclerosis on CT scan (Figure 3).