Cavernous Malformations and Hemangioblastomas of the Spinal Cord Show Distinct Differences in Clinical Course - A Retrospective Single-Center Analysis of 112 Patients

Study Design: Retrospective cohort study.Objective: Cavernous malformations (CMs) and hemangioblastomas (HBs) of the spinal cord exhibit distinct differences in histopathology but similarities in the neurological course. The aim of our study was to analyze the clinical differences between the vascular pathologies and a benign tumor of the spinal cord in a perioperative situation.Methods: We performed a retrospective analysis of patients who had undergone surgery for lesions in the spinal cord between 1984 and 2015. Patients were screened for CMs and HBs as the primary inclusion criteria. General patient information, surgical data, and disease-specific data were collected from the records. Cooper-Epstein scores for clinical symptoms were evaluated preoperatively, at discharge, and at the 6-month follow-up.Results: A total of 112 patients were included, of which 46 had been diagnosed with CMs and 66 with HBs. Patients with CMs often demonstrated more preoperative neurological deterioration compared to those with HBs (P < .05); accordingly, in took longer to diagnose HBs. Complete resection was possible for 96.8% of all patients with CMs and 90% of those with HBs. At the 6-month follow-up, patients with HBs more often presented with persisting neurologic impairment of the upper extremities compared to the CM patients (P < .001).Conclusion: CMs and HBs of the spinal cord have similarities but also exhibit significant differences in neurological presentation and perioperative course. Surgical therapy is the treatment of choice for symptomatic lesions, and complete surgical resection is possible in the majority of cases for both entities. Neurologic outcomes are usually favorable, although patients with HBs retain neurologic deficits more often.