The autors present a case report of a 7-year-old boy with acute back pain with totally atypical clinical presentations. Acute pains were only in the night, non-steroidal analgesics were without effect.
During the day the patient had no pain and was not limited his movement. Step-by-step were excluded injury, noninfectious systemic inflammation and metabolic causes.
Graphical views confirmed the rapid progression of the expansive process caudal spinal cord. Infectious etiology was demonstrated subsequently, with a certain latency.
Effective antimicrobial treatment resulted in total recovery.