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Spinal meningeal melanocytomas: clinical manifestations, radiological and pathological characteristics, and surgical outcomes

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机构: [1]Capital Med Univ, Beijing Tiantan Hosp, China Natl Clin Res Ctr Neurol Dis, Dept Neurosurg, 6 Tiantan Xili, Beijing 100050, Peoples R China; [2]Capital Med Univ, Beijing Neurosurg Inst, Dept Neuropathol, 6 Tiantan Xili, Beijing 100050, Peoples R China; [3]Capital Med Univ, Beijing Tiantan Hosp, Dept Pathol, 6 Tiantan Xili, Beijing 100050, Peoples R China
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关键词: Melanocytomas Spinal cord tumor MRI Surgical outcome

摘要:
Meningeal melanocytoma is a rare benign tumor, most frequently located in the posterior fossa and spinal canal. The aim of this study was to investigate the clinical manifestations, radiological features, management, and follow-up data of spinal meningeal melanocytomas. We present the clinical data and long-term outcomes from a consecutive surgical series of 16 patients with pathologically diagnosed spinal meningeal melanocytomas. All of the patients underwent surgical resection. Pre and postoperative MRI was performed. Follow-up data and neurological functional assessment is presented and discussed. The mean age at diagnosis was 42.0 years, with a significant male predominance. The primary clinical symptoms were weakness or numbness of the extremities. The appearance of melanocytoma on MRI is typically isointense to hyperintense on T1-weighted images, hypointense on T2-weighted images, and contrast enhancement tends to be remarkable and homogeneous. In most cases, gross total resection is achievable; however, in rare cases with dumbbell-shaped tumors involving the extraspinal region, a staging operation and subtotal resection should be attempted. During a mean follow-up period of 58.1 months, the symptoms were completely relieved in all the patients, and no tumor progression or recurrence was noted. Melanocytic tumors of the central nervous system have a typical appearance on MRI scans, varying with the content and distribution of melanin. However, the differential diagnosis between malignant melanoma and melanocytoma still depends on pathological criteria. Spinal meningeal melanocytoma has a benign course, and it is amenable for gross total resection. The outcome is favorable following complete resection.

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出版当年[2015]版:
大类 | 3 区 医学
小类 | 3 区 临床神经病学 3 区 肿瘤学
最新[2023]版:
大类 | 2 区 医学
小类 | 3 区 临床神经病学 3 区 肿瘤学
JCR分区:
出版当年[2014]版:
Q2 CLINICAL NEUROLOGY Q2 ONCOLOGY
最新[2023]版:
Q2 CLINICAL NEUROLOGY Q2 ONCOLOGY

影响因子: 最新[2023版] 最新五年平均 出版当年[2014版] 出版当年五年平均 出版前一年[2013版] 出版后一年[2015版]

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第一作者机构: [1]Capital Med Univ, Beijing Tiantan Hosp, China Natl Clin Res Ctr Neurol Dis, Dept Neurosurg, 6 Tiantan Xili, Beijing 100050, Peoples R China;
通讯作者:
通讯机构: [1]Capital Med Univ, Beijing Tiantan Hosp, China Natl Clin Res Ctr Neurol Dis, Dept Neurosurg, 6 Tiantan Xili, Beijing 100050, Peoples R China;
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