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  • Title: Intramedullary hemangioblastomas: surgical results in 16 patients.
    Author: Joaquim AF, Ghizoni E, dos Santos MJ, Valadares MG, da Silva FS, Tedeschi H.
    Journal: Neurosurg Focus; 2015 Aug; 39(2):E18. PubMed ID: 26235016.
    Abstract:
    OBJECT Hemangioblastomas are rare, benign, highly vascularized tumors that can be found throughout the neuraxis but are mainly located in the cerebellum and in the spinal cord. Spinal hemangioblastomas can present with motor and sensory deficits, whose severity varies according to the size and location of the tumor. Resection is the best treatment option to avoid neurological deterioration. The authors report surgical results in the treatment of intramedullary hemangioblastomas and discuss the technical nuances important to achieving total resection without adding new deficits. METHODS A consecutive series of patients with intramedullary hemangioblastomas operated on between 2000 and 2014 by the senior author (H.T.) is presented. The functional scale proposed by McCormick was used to evaluate the patients' neurological status before and after surgery. RESULTS Sixteen patients were included in the study and underwent 17 surgeries. Follow-up was at least 6 months. Age at presentation varied from 13 to 58 years (mean 33.8 years). Ten patients (62.5%) were males and 6 patients (37.5%) were females. Seven (43.75%) of the 16 patients had associated von Hippel-Lindau syndrome, with hemangioblastomas also presenting in other locations. Three patients had multiple tumors in the same segment in the spinal cord, and 10 patients (62.5%) presented with cysts. According to the site of presentation, 11 tumors (68.75%) were localized at the cervical region (including the cervicomedullary junction) and 5 tumors (31.25%) at the thoracic level. Total resection was achieved in all cases, evidenced by postoperative MRI. Four patients had some functional worsening immediately after surgery. After 6 months, 1 patient had functional worsening compared with preoperative status, and 2 patients had clinical improvement. The majority of the patients remained clinically stable postoperatively. CONCLUSIONS Adequate knowledge of anatomy and the correct use of microsurgical techniques allowed total resection of these tumors, with minimal morbidity and maximum functional recovery. Outcome seems to be directly related to the neurological status before surgery.
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