Left to right: Sagittal T1, Sagittal T2, and Axial T2.
T1W image: Hypointensity of the endplates and adjacent bone marrow at L4-5 (more
posteriorly) with erosion of the bony cortex and epidural extension. Also, note the
hypointense prevertebral mass extending from top of L4 to inferior endplate of L5.
T2W images: Heterogeneous hyperintensity involving the L4 and L5 vertebral bodies
and right anterolateral prevertebral soft tissues.
Sagittal and axial T1W images post gadolinium: Diffuse enhancement of the L4 and L5
vertebral bodies, intervertebral disk, prevertebral and paraspinal soft tissues and
ventral epidural space. Multiple areas of non-enhancement indicate necrosis or
liquefaction. No intradural extension of the process.
Key words: mri infection lumbar
with psoas abscesses