Intractable Scapular Pain Due to Undiagnosed Osteoid Osteoma: A Case Report.

A 36-year-old female patient presented to our stroke neurology clinic for progressively worsening intractable, sharp, shooting interscapular pain radiating to the right shoulder and neck, which she had experienced for 4 years. She had previously seen an orthopedist and was referred to a neurosurgeon for surgical intervention after an MRI of the cervical spine showed the C3-C4 right vertebral artery loop protruding into the right C3-C4 neural foramen and compressing the exiting C4 nerve root. MR neurography showed a stable tortuous right vertebral artery loop, causing a mass effect on the dorsal root ganglion. A neuroforaminal decompression surgery was planned. However, the patient visited our stroke neurology clinic for a second opinion before surgery. An MRI of the thoracic spine showed an enhancing soft tissue mass at the right T4-T5 pedicles and adjacent body. A chest CT with contrast showed a 1 cm radiolucent lesion in the superior articular facet of T5, which represented a nidus. A technetium bone scan showed focal increased uptake within the right T5 pedicle, which is indicative of osteoid osteoma. The patient underwent laminectomy/resection and was pain-free at a 6-month follow-up; biopsy confirmed osteoid osteoma. This case illustrates the importance of neurolocalization during diagnostic testing.