Abstract
A 6-year-old Japanese girl presented with psychomotor seizures. Magnetic resonance (MR) images disclosed a mass lesion in the left middle cranial fossa with an internal irregular-shaped area, which was hyperintense on T1-weighted images and hypointense on T2-weighted images. Gross total resection of the tumor was performed through left occipital craniotomy. The tumor was white-to-grayish hard tissue, focally showing blackish pigmentation. Histological, immunohistochemical and electron-microscopical analyses revealed that white-to-grayish hard tissue corresponded to an atypical meningioma, and the blackish pigmentation of the tumor was composed of non-neoplastic, reactive hyperplasia and colonization of meningeal melanocytes in the meningioma tissue. A meningioma with reactive hyperplasia and colonization of meningeal melanocytes is unusual, but it is clinically important to differentiate this entity from other melanocytic tumors.
| Original language | English |
|---|---|
| Pages (from-to) | 269-272 |
| Number of pages | 4 |
| Journal | Brain Pathology |
| Volume | 20 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 1 2010 |
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All Science Journal Classification (ASJC) codes
- Neuroscience(all)
- Pathology and Forensic Medicine
- Clinical Neurology
Cite this
A 6-year-old girl with an extra-axial mass in the middle cranial fossa : Com sept 2009, case 1. / Masui, Kenta; Suzuki, Satoshi; Kondo, Akira; Iwaki, Toru.
In: Brain Pathology, Vol. 20, No. 1, 01.01.2010, p. 269-272.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A 6-year-old girl with an extra-axial mass in the middle cranial fossa
T2 - Com sept 2009, case 1
AU - Masui, Kenta
AU - Suzuki, Satoshi
AU - Kondo, Akira
AU - Iwaki, Toru
PY - 2010/1/1
Y1 - 2010/1/1
N2 - A 6-year-old Japanese girl presented with psychomotor seizures. Magnetic resonance (MR) images disclosed a mass lesion in the left middle cranial fossa with an internal irregular-shaped area, which was hyperintense on T1-weighted images and hypointense on T2-weighted images. Gross total resection of the tumor was performed through left occipital craniotomy. The tumor was white-to-grayish hard tissue, focally showing blackish pigmentation. Histological, immunohistochemical and electron-microscopical analyses revealed that white-to-grayish hard tissue corresponded to an atypical meningioma, and the blackish pigmentation of the tumor was composed of non-neoplastic, reactive hyperplasia and colonization of meningeal melanocytes in the meningioma tissue. A meningioma with reactive hyperplasia and colonization of meningeal melanocytes is unusual, but it is clinically important to differentiate this entity from other melanocytic tumors.
AB - A 6-year-old Japanese girl presented with psychomotor seizures. Magnetic resonance (MR) images disclosed a mass lesion in the left middle cranial fossa with an internal irregular-shaped area, which was hyperintense on T1-weighted images and hypointense on T2-weighted images. Gross total resection of the tumor was performed through left occipital craniotomy. The tumor was white-to-grayish hard tissue, focally showing blackish pigmentation. Histological, immunohistochemical and electron-microscopical analyses revealed that white-to-grayish hard tissue corresponded to an atypical meningioma, and the blackish pigmentation of the tumor was composed of non-neoplastic, reactive hyperplasia and colonization of meningeal melanocytes in the meningioma tissue. A meningioma with reactive hyperplasia and colonization of meningeal melanocytes is unusual, but it is clinically important to differentiate this entity from other melanocytic tumors.
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UR - http://www.scopus.com/inward/citedby.url?scp=71549119863&partnerID=8YFLogxK
U2 - 10.1111/j.1750-3639.2009.00348.x
DO - 10.1111/j.1750-3639.2009.00348.x
M3 - Article
VL - 20
SP - 269
EP - 272
JO - Brain Pathology
JF - Brain Pathology
SN - 1015-6305
IS - 1
ER -