Abstract
Following an accidental dural puncture during the placement of epidural anesthesia, leakage of cerebrospinal fluid occurs. This leads to tugging on intracranial pain-sensitive structures and causes a headache that is postural in nature. According to radiology literature, the presence of retro spinal fluid collections has been associated with the diagnosis of spontaneous intracranial hypotension. The characteristic C1-C2 radiographic sign, called the C1-C2 false localizing sign, can be found on magnetic resonance (MR) images as a focal area of fluid-like signal intensity and on CT myelograms as a CSF collection between the spinous processes of C1 and C2. As our case report demonstrates, this sign is also associated with intracranial hypotension after lumbar puncture.
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