[Idiopathic hypertrophic cranial pachymeningitis diagnosed after venous thrombosis]. / Paquimeningitis hipertrófica craneal idiopática diagnosticada tras trombosis venosa.

INTRODUCTION: Idiopathic hypertrophic cranial pachymeningitis (IHCP) is a rare and little known form of chronic inflammation of the dura mater, the pathogenesis of which remains unclear. CASE REPORT: We report the case of a 77-year-old male who was admitted to hospital after suffering a stroke; following the findings in the MR imaging, the patient was diagnosed as having IHCP. Treatment with corticoids led to an improvement in the patient's condition both clinically and radiologically. CONCLUSIONS: IHCP produces a non-nodular diffuse dural thickening that is hypointense with respect to the brain parenchyma in all the MRI sequences with intravenous contrast enhancement.