Abstract
To analyze the surgical outcome of a consecutive and single center series of medulla oblongata (MO) and spinal cord hemangioblastomas (HB). We retrospectively reviewed the medical charts of all MO and spinal HB patients operated on in our institution between 1985 and 2002. All patients had pre- and at least one post-operative MRI. McCormick classification was used to assess neurological status and functional outcome. Forty surgical procedures have been performed on 34 patients (19 females and 15 males, mean age of 41 years). Twenty-five (73%) patients had Von Hippel Lindau (VHL) disease confirmed by genetic screening, and nine patients had sporadic disease. Complete clinical, radiological, and genetic studies were done in all cases. The most frequent clinical symptom was pain (28 patient, 85%) followed by motor (42%) and sensitive deficits (42%). Fourteen lesions (19%) were located in the MO, 28 (38%) in the cervical spine, 25 (34%) in the thoracic spine, 4 (5%) in the lumbar spine and 3 (4%) in the Cauda Equina. In the VHL group, 15 patients (60%) presented multiple lesions and 10 a single neurological lesion (40%). A cyst was present in 23% of VHL patients and in 55% of the non-VHL group. A complete removal was achieved in 85% of all cases. No deaths related to surgery occurred. At the end of the follow-up period (mean 60 months) 50% of patients were stabilized, while the condition of 32.35% was improved and of 17.65% worsened. Comparing the clinical evolution considering the presence or not of VHL we have seen that there are no differences in terms of functional outcome between VHL and non-VHL groups. Our results confirmed that surgery remains a safe and effective treatment for medulla oblongata and spinal hemangioblastoma. Only symptomatic lesion required surgical treatment. In other cases, especially in VHL patients, a close and regular follow-up (clinical and MRI) is necessary.
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