Spinal hydatid disease
Paraplegia. Had surgery twice for spinal cystic masses
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There are multiple epidural intracanalar, and paravertebral (mainly on the left) cysts of various sizes, extending from C2-C3 to T10 -T11 level (length = 30 cm), composed of numerous daughter cysts of low signal intensity on T1WI, high signal intensity on T2WI with a peripheral hypointense rim of the pericyst. The solid matrix is of intermediate signal on both T1WI/T2WI with no enhancement on postcontrast sequences. The largest cyst is of left paravertebral location (9 x 8 x 7 cm), invading the adjacent T4, and T7 vertebra with T3-T4 dislocation. Involvement of the paraspinal soft tissue is also noted at T3-T4 and T10-T11 levels.
The spinal cord is compressed and displaced anteriorly.
No pulmonary, hepatic or splenic hydatid disease is noted.
MRI features of spinal hydatid disease, type 3, 4, and 5 according to the Dew/Braithwaite and Lees classification.
Additional contributor: R. Bouguelaa, MD / A.Ramdani, MD