MR imaging features of giant pre-sacral schwannomas: a report of four cases.
Benign giant sacral schwannoma is an uncommon cause of destruction of the sacrum. This report details four cases of a variant of this condition called giant presacral schwannoma (GPSS). On MR imaging the features are of a large, well-defined presacral soft tissue mass, arising just to one side of the midline with minor involvement of the bone. The typical MR features of a benign peripheral nerve sheath tumour are not seen. The tumours appear heterogeneous due to long-standing degeneration. Biopsy is advocated as the appearances of GPSS can be similar to a malignant peripheral nerve sheath tumour (malignant schwannoma).
MRI Centre, Royal Orthopaedic Hospital, Birmingham, B31 2AP, UK.
R
R
Popuri
A M
AM
Davies
D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009442:Neurilemmoma / Q000473:pathology*; D012189:Retrospective Studies; D012447:Sacrum / Q000473:pathology*; D013125:Spinal Neoplasms / Q000473:pathology*