Necrotising sarcoid granulomatosis of the spinal cord: case report

We report a patient who presented with leg weakness and cervical lymphadenopathy. Thoracical magnetic resonance imaging showed an inhomogenously increased signal in the thickened portion of the cord. Multilevel laminectomy and spinal cord biopsy revealed granulomatous infiltrations with necrosis. Review of the histopathological finding established the diagnosis of necrotising sarcoid granulomatosis (NSG) of the spinal medulla, cytological FNA diagnosis of the neck lymph node was granulomatous inflammation with necrosis, but histopathological analysis of the same neck lymph node disclosed granulomatous inflammation without necrosis. On further radiographic chest evaluation mediastinal lymphadenopathy was found. Immunophenotyping of lymphocytes in bronchoalveolar lavage fluid (BALF) was indicative of sarcoidosis. After the administration of corticosteroid therapy the patient's clinical condition improved, and laryngeal and mediastinal lymph nodes subsided with minor changes remaining in the spinal medulla, which, based upon MR assessment, were considered to be irreversible. To our knowledge, this is the first described case with finding of granulomatous inflammation with and without vasculitis in various organs, consistent with the Churg's study who believes NSG to be a histological variant of sarcoidosis.