{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,7]],"date-time":"2026-03-07T19:51:45Z","timestamp":1772913105968,"version":"3.50.1"},"reference-count":20,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"5","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JNS"],"published-print":{"date-parts":[[2009,11]]},"abstract":"<jats:sec>\n<jats:title>Object<\/jats:title>\n<jats:p>Surgery for skull base meningiomas (SBMs) can lead to complications because these lesions are difficult to approach and can involve cranial nerves and arteries. The authors propose a scoring system to evaluate the relative risks and benefits of surgical treatment of SBMs.<\/jats:p><\/jats:sec>\n<jats:sec>\n<jats:title>Methods<\/jats:title>\n<jats:p>The authors used a 2-step process to construct their scale. First, they derived significant predictive variables from retrospective data on 132 SBM cases treated surgically (primary surgeries only) between May 2000 and December 2005. Next, they validated the predictive accuracy of their scoring system in 60 consecutive cases treated surgically between January 1995 and April 2000, including both primary and repeated surgeries. Finally, they investigated the effect of the surgery on the patients' preoperative symptoms for consecutive cases treated surgically between January 1995 and December 2005, including both primary surgeries and retreatments.<\/jats:p><\/jats:sec>\n<jats:sec>\n<jats:title>Results<\/jats:title>\n<jats:p>Five items that predicted surgical risk were identified: 1) tumor attachment size; 2) arterial involvement; 3) brainstem contact; 4) central cavity location; and 5) cranial nerve group involvement. The authors named their scoring system the ABC Surgical Risk Scale, after the initial letters of these items. Each factor was assigned a score of 0\u20132 points, and an additional point was added for previous surgical treatment or for radiation, giving a possible total score of 12 points. On average, the scoring system allocated 2 points for gross-total resections, 6.1 points for near-total resections, and 9 points for subtotal resections, with significant differences between groups. For cases scoring \u2265 8 points, the percentage of cases showing neurological deterioration postoperatively exceeded the percentage showing improvement.<\/jats:p><\/jats:sec>\n<jats:sec>\n<jats:title>Conclusions<\/jats:title>\n<jats:p>The authors conclude that this scoring system can be used to predict the extent of tumor removal and that the scores reflect the surgical risk.<\/jats:p><\/jats:sec>","DOI":"10.3171\/2007.11.17446","type":"journal-article","created":{"date-parts":[[2009,1,2]],"date-time":"2009-01-02T16:01:12Z","timestamp":1230912072000},"page":"1053-1061","source":"Crossref","is-referenced-by-count":38,"title":["ABC Surgical Risk Scale for skull base meningioma: a new scoring system for predicting the extent of tumor removal and neurological outcome"],"prefix":"10.3171","volume":"111","author":[{"given":"Kazuhide","family":"Adachi","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takeshi","family":"Kawase","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kazunari","family":"Yoshida","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takahito","family":"Yazaki","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Satoshi","family":"Onozuka","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1754","reference":[{"issue":"5","key":"b1-17446","series-title":"Neurosurg Focus","first-page":"E6","article-title":"Stereotactic radiosurgery for meningiomas","volume":"14","author":"Chin","year":"2003"},{"key":"b2-17446","series-title":"Neurosurgery","first-page":"1","article-title":"The results of surgery for benign tumors of the cavernous sinus","volume":"37","author":"Cusimano","year":"1995"},{"key":"b3-17446","series-title":"J Neurosurg","first-page":"245","article-title":"Outcome of aggressive removal of cavernous sinus meningiomas","volume":"81","author":"DeMonte","year":"1994"},{"key":"b4-17446","series-title":"Acta Neurochir (Wien)","first-page":"113","article-title":"Middle fossa transpetrosaltranstentorial approaches for petroclival meningiomas. Selective pyramid resection and radicality","volume":"129","author":"Kawase","year":"1994"},{"key":"b5-17446","series-title":"J Neurosurg Sci","first-page":"183","article-title":"Cavernous sinus tumors: neuroradiologic and neurosurgical considerations on 150 operated cases","volume":"36","author":"Lanzino","year":"1992"},{"key":"b6-17446","series-title":"J Neurosurg","first-page":"65","article-title":"Stereotactic radiosurgery providing longterm tumor control of cavernous sinus meningiomas","volume":"97","author":"Lee","year":"2002"},{"key":"b7-17446","series-title":"Neurosurgery","first-page":"221","article-title":"Proposed grading system to predict the extent of resection and outcomes for cranial base meningiomas","volume":"45","author":"Levine","year":"1999"},{"key":"b8-17446","series-title":"Neurosurgery","first-page":"546","article-title":"Surgical management of petroclival meningiomas: defining resection goals based on risk of neurological morbidity and tumor recurrence rates in 137 patients","volume":"56","author":"Little","year":"2005"},{"key":"b9-17446","series-title":"Eur J Radiol","first-page":"69","article-title":"Intracranial meningiomas: correlations between MR imaging and histology","volume":"31","author":"Maiuri","year":"1999"},{"key":"b10-17446","series-title":"Neurosurgery","first-page":"1153","article-title":"Radiosurgical treatment of cavernous sinus meningiomas: experience with 122 treated patients","volume":"51","author":"Nicolato","year":"2002"},{"key":"b11-17446","series-title":"Surg Neurol","first-page":"160","article-title":"The selection of the optimal therapeutic strategy for petroclival meningiomas","volume":"66","author":"Park","year":"2006"},{"key":"b12-17446","series-title":"J Neurooncol","first-page":"159","article-title":"Meningioma-associated brain oedema: the role of angiogenic factors and pial blood supply","volume":"60","author":"Pistolesi","year":"2002"},{"key":"b13-17446","series-title":"Neurosurg Rev","first-page":"138","article-title":"Levine-Sekhar grading system for prediction of the extent of resection of cranial base meningiomas revisited: study of 124 cases","volume":"29","author":"Saberi","year":"2006"},{"key":"b14-17446","series-title":"J Neurosurg","first-page":"860","article-title":"Surgical excision of meningiomas involving the clivus: preoperative and intraoperative features as predictors of postoperative functional deterioration","volume":"81","author":"Sekhar","year":"1994"},{"key":"b15-17446","series-title":"J Neurosurg","first-page":"535","article-title":"Meningiomas involving the cavernous sinus: histological factors affecting the degree of resection","volume":"87","author":"Sen","year":"1997"},{"key":"b16-17446","series-title":"J Neurosurg","first-page":"491","article-title":"Sphenoorbital meningiomas: surgical limitations and lessons learned in their long-term management","volume":"103","author":"Shrivastava","year":"2005"},{"key":"b17-17446","series-title":"J Neurol Neurosurg Psychiatry","first-page":"22","article-title":"The recurrence of intracranial meningiomas after surgical treatment","volume":"20","author":"Simpson","year":"1957"},{"key":"b18-17446","series-title":"Neurosurgery","first-page":"1373","article-title":"Linear accelerator radiosurgery for meningiomas in and around the cavernous sinus","volume":"51","author":"Spiegelmann","year":"2002"},{"key":"b19-17446","series-title":"Acta Neurochir (Wien)","first-page":"39","article-title":"Meningiomas: correlation between MRI characteristics and operative findings including consistency","volume":"129","author":"Suzuki","year":"1994"},{"key":"b20-17446","series-title":"Surg Neurol","first-page":"579","article-title":"Prediction of consistency of meningiomas with preoperative magnetic resonance imaging","volume":"48","author":"Yamaguchi","year":"1997"}],"container-title":["Journal of 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