Possible Double Crush Syndrome Caused by Iatrogenic Acquired Lumbosacral Epidermoid Tumor and Concomitant Sacral Tarlov Cyst

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  • Nishimura Yusuke
    Department of Neurosurgery, Nagoya University, Nagoya, Aichi, Japan
  • Hara Masahito
    Department of Neurosurgery, Nagoya University, Nagoya, Aichi, Japan
  • Awaya Takayuki
    Department of Neurosurgery, Nagoya University, Nagoya, Aichi, Japan
  • Ando Ryo
    Department of Neurosurgery, Nagoya University, Nagoya, Aichi, Japan
  • Eguchi Kaoru
    Department of Neurosurgery, Nagoya University, Nagoya, Aichi, Japan
  • Nagashima Yoshitaka
    Department of Neurosurgery, Nagoya University, Nagoya, Aichi, Japan
  • Wakabayashi Toshihiko
    Department of Neurosurgery, Nagoya University, Nagoya, Aichi, Japan
  • Ginsberg Howard J.
    Division of Neurosurgery, St. Michael’s Hospital, University of Toronto, Toronto, Canada

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Abstract

<p>We describe a rare case of 42-year-old female who had possible double crush syndrome caused by iatrogenic spinal epidermoid tumor (ET) associated with lumbar puncture as well as concomitant sacral Tarlov cyst in close proximity. She presented with progressive left-sided perianal pain. She had a history of a Caesarean section with lumbar spinal anesthesia. Magnetic resonance imaging (MRI) demonstrated a relatively small intradural extramedullary solid lesion at L5/S1 level and cystic lesion at S2 level. We considered there were two different lesions, such as a tumor and Tarlov cyst; however, we could not rule out the possibility of a single lesion with two different components. Furthermore, there was a distinct compression at more than one locations along the course of the left S2 nerve root and we suspected possible double crush syndrome. We conducted tumor removal and the lesion turned out to be two different pathologies, such as an ET and Tarlov cyst. Both lesions were intraopertively pinching the left S2 nerve root at different sites as expected. The tumor was successfully removed and the cyst wall was imbricated and sutured. We need to take the possibility of ET into consideration if the patient underwent invasive spinal procedure previously. We also have to pay attention to the possibility of double crush syndrome if the nerve root possibly holding the responsibility for symptoms is compressed at two or more sites. This is the first report of possible double crush syndrome caused by acquired spinal tumor and congenital Tarlov cyst.</p>

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