Myelopathy due to hereditary multiple exostoses: CT and MR studies

Spinal Exostosis in a Boy with Multiple Hereditary Exostoses

“…Spinal osteochondromas are considered uncommon, reportedly accounting between 1–9% of all exostoses. This included all lesions of the spinal column, both within the spinal canal and those projecting away from the canal [5, 6]. Malignant degeneration into chondrosarcoma is rare, reported as 1–5% of solitary lesions.…”

Horner Syndrome due to a Solitary Osteochondroma of C7

“…In contrast to routine radiographs for assessment of spinal osteochondromas, CT may be a more specific means as it allows demonstration of the exact origin and nature of the lesion because of its sensitivity. 2,11 Additionally, magnetic resonance imaging examination may be necessary for patients with osteochondromas with neurologic deficit caused by spinal cord compression, as it allows for detailed visualization of the vertebral osteochondroma, the compression and denaturation of the spinal cord, and the association between the lesion and the cord. 2,7,11 Surgical removal of the symptomatic spinal osteochondromas usually leads to definitive relief from the clinical complaints.…”

“…2,11 Additionally, magnetic resonance imaging examination may be necessary for patients with osteochondromas with neurologic deficit caused by spinal cord compression, as it allows for detailed visualization of the vertebral osteochondroma, the compression and denaturation of the spinal cord, and the association between the lesion and the cord. 2,7,11 Surgical removal of the symptomatic spinal osteochondromas usually leads to definitive relief from the clinical complaints. 4,6,13 Although rarely, Horner syndrome may be secondary to a neck surgery, 16 suggesting that caution should be taken to avoid damaging the truncus sympathicus when performing a cervical procedure.…”

Myélopathie cervicale au cours d’une maladie des exostoses multiples

“…Récemment, deux cas cliniques ont été rapportés, l'un concernant un jeune garç on âgé de quatre ans [12] et l'autre une jeune fille âgée de quatorze ans [9], comportant une atteinte médullaire cervicale et une raideur du rachis cervical. Il est nécessaire de rechercher des troubles de la marche avec des chutes, des signes de myélopathie comme une faiblesse des extrémités, des paresthésies, une souffrance radiculaire ou des troubles mictionnels [10,11,13]. Ces symptômes peuvent se révéler plus tardivement (typiquement de la deuxième à la quatrième décennie) que les autres signes osseux de la MEM [1].…”