PMC3137835_01
MRI T2W, done in 2003 shows a small cystic lesion of sacrum, which was presumed to be Tarlov's cyst
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F1
Magnetic resonance imaging (MRI) at that time showed small cystic lesion in sacrum and no active treatment was offered [Figure 1].
MRI T2W, done in 2007 shows enlargement of previous sacral cystic lesion with heterogeneous intensity and extension into presacral space and spinal canal
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F2
A repeat MRI done in 2007 showed significant increase in size of cyst with inhomogeneous contents [Figure 2].
Chitinous cyst wall with multiple daughter cysts
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F3
Inner lining of cyst was white with multiple daughter cysts within [Figure 3].
MRI T2W done after seven months of surgery shows collapsed cyst. There are no intracystic contents. There is no epidural compression
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F4
An MRI was done seven months after surgery showed collapsed cyst [Figure 4].