[Horner's syndrome and brachial radiculopathy related to vertebral metastases]. / Síndrome de Horner y radiculopatía braquial en relación con metástasis vertebrales.

INTRODUCTION: Horner's syndrome consists of sympathetic ocular paralysis, with lesions occurring at different levels. When it's associated with involvement of the C8-T1 roots, the commonest causes are the tumours responsible for Pancoast's syndrome. CLINICAL CASE: We describe the case of a patient who presented with a clinical condition in which a complete right Horner's syndrome was associated with ipsilateral C8-T1 brachial radiculopathy. On investigation, there was a tumour involving the vertebral segments between C8 and T5. Histological studies showed this to be a metastasis from an adenocarcinoma at the base of the right lung. CONCLUSION: We consider this case to be interesting because of its unusual aetiology, since metastatic vertebral lesions are an uncommon cause of Horner's syndrome.