Osteoid osteoma is a benign osteoblastic tumor, quite uncommon in the spine. We report a case of an osteoid osteoma involving the atlas in a 6-year-old boy, who presented with suboccipital pain and torticollis. Initial radiological findings were ambiguous as magnetic resonance imaging showed mainly edema of upper cervical soft tissues. The subsequent computed tomography depicted a lesion of left lamina of C1. As conservative treatment failed, the lesion was surgically resected and the patient became pain free. To our knowledge, this is the first case of osteoid osteoma involving the atlas associated with abnormal soft tissue reaction reported in literature.

Osteoid Osteoma of the Atlas in a Boy: Clinical and Imaging Features-A Case Report and Review of the Literature / Valluzzi, A.; Donatiello, S.; Gallo, G.; Cellini, M.; Maiorana, A.; Spina, V.; Pavesi, G.. - In: NEUROPEDIATRICS. - ISSN 0174-304X. - (2020), pp. 1-4. [10.1055/s-0040-1715488]

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