• Nanfang Xu, Feng Wei, Xiaoguang Liu, Liang Jiang, and Zhongjun Liu.
• Department of Orthopaedics, Peking University Third Hospital, 49 Huayuan North Road, Beijing, 100191, China.
• Eur Spine J. 2016 May 1; 25 Suppl 1: 204-8.

PurposeCalcific discitis is a self-limiting process most commonly seen in the cervical spine of children. Rare literature exists regarding the natural history and management of this condition in adults, especially when it presents as a giant thoracic disc herniation into the spinal canal. Giant herniations in the thoracic spine are typically surgically removed to reduce the chance of permanent neurologic deficit from spinal cord compression. However, when associated with calcific discitis, they may undergo spontaneous regression with the need for surgery obviated.MethodsMedical records and radiographic studies of two adult patients with calcific discitis and myelopathy due to spinal cord compression by giant thoracic disc herniations were retrospectively reviewed. Search of the literature on calcific discitis in adults and spontaneous regression of calcified thoracic disc herniations was separately performed.ResultsBoth patients were young male adults presenting with back pain and early signs of myelopathy. With restriction of activities and oral NSAIDs, their symptoms were relieved within 3 months. Four adult cases of calcific discitis (characteristic central calcification confined within the nucleus pulposus) and three instances of spontaneous regression of small- to medium-sized thoracic calcified disc herniations were identified from the literature.ConclusionsThe demonstration of spontaneous resorption of giant calcified thoracic disc herniations in two adult patients with calcific discitis supplements the existing literature and provides the first evidence that giant calcified thoracic disc herniations may still undergo spontaneous remission and a "wait and watch" strategy may be justified at least in the initial management of these patients, even with the presence of mild myelopathy.

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