Acquired lumbar epidermoid cyst in an adult.
A 61-year-old female complained of low back pain, and had been treated by spinal anesthetic injection more than 70 times over 14 years. Magnetic resonance (MR) imaging, performed at the age of 47 years, revealed no abnormal lesion. However, she developed irritable hypesthetic pain in the left leg at 61 years of age. MR imaging revealed a round mass appearing isointense on the T1-weighted and slightly hyperintense on the T2-weighted images. Laminectomy revealed an epidermoid cyst, which was removed. This case clearly demonstrates that adults can acquire epidermoid tumor which very probably has an iatrogenic origin. The incidence of epidermoid tumor is low, but we should be aware of the potential adverse complications such as formation of epidermoid tumors after lumbar puncture.
Miyake
Shigeru
S
Department of Neurosurgery, Kobe University Graduate School of Medicine, Hyogo, Japan. smiyake@med.kobe-u.ac.jp
Kobayashi
Norikata
N
Murai
Naoki
N
Kondoh
Takeshi
T
Kohmura
Eiji
E
D004814:Epidermal Cyst / Q000209:etiology* / Q000473:pathology* / Q000601:surgery; D005260:Female; D006801:Humans; D008159:Lumbar Vertebrae; D008875:Middle Aged; D013122:Spinal Diseases / Q000209:etiology* / Q000473:pathology* / Q000601:surgery; D013129:Spinal Puncture / Q000009:adverse effects*