Volume 54 No 4  Cover Story

Sacral schwannoma mimicking aneurysmal bone cyst: Multi-septated enhanced cystic mass on MRI. Intraosseous expensile mass involving left sacrum on CT. Compression of the left S1 nerve root and displacement of the left sacral nerves below S1 nerve is noted. Subtle pathologic fracture involving upper-endplate of S1 is also seen.