[Costo-vertebral hydatid disease: the role of MRI]. / Hydatidose costo-vertébrale: intérêt de l'IRM.

ABSTRACT

INTRODUCTION: Hydatid disease of bone is very rare accounting for 0.5% - 3% of all localisations. CASE REPORT We report the case of a woman of 30 years who presented with posterior chest pain. The chest radiograph showed an extra-pulmonary mass associated with a lytic rib lesion. Thoracic ultrasound revealed a multiloculated soft tissue and fluid mass. CT scan showed a fluid filled costo-vertebral cyst. MRI identified extension into the spinal canal. Pathological examination of the surgically resected material confirmed the diagnosis. CONCLUSIONS: This observation emphasises the role of MRI in assessing the extent of hydatid cysts of the posterior chest wall and in particular invasion of the spinal canal.