1. 2014;17;E381-E384Spontaneous C1-2 Cerebrospinal Fluid Leak Treated with a Targeted Cervical Epidural Blood Patch Using a Cervical Epidural Racz Catheter
   Case Report
   So-Young Kwon, MD, Yong-Shin Kim, MD, PhD, and Sung-Min Han, MD.

A 39-year-old woman with no history of trauma or meningitis presented to the neurology department of our hospital with an occipital headache, neck pain, nausea, and dizziness that had worsened during the previous month. The headache worsened when sitting or standing and partially regressed when lying down. She was diagnosed with spontaneous intracranial hypotension (SIH) and received conservative management. After failing to respond to conservative management, she underwent an autologous epidural blood patch (EBP) at the T7-8 level. The headache and associated symptoms did not improve after the procedure. Magnetic resonance (MR) myelography suggested a cerebrospinal fluid leakage at the C1-2 level resulting in intracranial hypotension. An 18-gauge Tuohy needle was inserted at the T1-2 interlaminal level using a paramedian approach under fluoroscopic guidance. The cervical epidural Racz catheter was threaded through the Tuohy needle up to the cervical spine and the catheter tip was confirmed to be at the right cervical 1-2 site on an anteroposterior (AP) view. Five mL of autologous blood was injected into the epidural space through the cervical epidural Racz catheter.

Her occipital headache and associated symptoms gradually disappeared after the procedure. Seven days later the headache was largely resolved and she was discharged. Follow-up magnetic resonance imaging (MRI) showed the disappearance of abnormal radiological features associated with intracranial hypotension. She currently remains symptom free for 9 months. Delivery of autologous blood patch via a cervical epidural Racz catheter inserted from the upper thoracic spine can be a safe and effective method for patients with SIH due to cerebrospinal fluid (CSF) leakage in the upper cervical spine.