Nondura-based clear cell meningioma of the cauda equina in an adult

Clear cell meningioma (CCM) is a rare variant of meningioma. Only 17 cases have been previously reported in children. Although it has bland cytologic features, it has a higher rate of recurrence than does conventional meningioma. This variant has been reported in sites such as spinal/intradural (lumbar and thoracic), cerebellopontine angle, and supratentorial. The differential diagnosis of CCM includes microcystic meningioma, hemangioblastoma, and clear cell ependymoma. The characteristic histology and immunohistochemistry leads to the diagnosis. We present a case of a 7-year-old boy with a CCM of the cauda equina and a review of pediatric CCM.

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Two cases of nondura-based clear cell meningioma of the cauda equina. Case report

Apmis ◽

10.1111/j.1600-0463.2004.apm1120209.x ◽

2004 ◽

Vol 112 (2) ◽

pp. 141-147 ◽

Cited By ~ 18

Author(s):

MARIA PAYANO ◽

YOSHIYUKI KONDO ◽

KENJI KASHIMA ◽

TSUTOMU DAA ◽

TOMOJI YATSUKA ◽

...

Keyword(s):

Case Report ◽

Clear Cell ◽

Cauda Equina ◽

Clear Cell Meningioma

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Pediatric nondura-based clear cell meningioma of the cauda equina: case report and review of literature

British Journal of Neurosurgery ◽

10.1080/02688697.2018.1429565 ◽

2018 ◽

Vol 34 (2) ◽

pp. 215-218 ◽

Cited By ~ 2

Author(s):

Yukari Kawasaki ◽

Susumu Uchida ◽

Kouhei Onishi ◽

Kazuo Okanari ◽

Minoru Fujiki

Keyword(s):

Case Report ◽

Clear Cell ◽

Cauda Equina ◽

Review Of Literature ◽

Clear Cell Meningioma

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Nondural-based lumbar clear cell meningioma

Journal of Neurosurgery ◽

10.3171/jns.1996.84.2.0264 ◽

1996 ◽

Vol 84 (2) ◽

pp. 264-266 ◽

Cited By ~ 29

Author(s):

Robert N. N. Holtzman ◽

Susan C. Jormark

Keyword(s):

Clear Cell ◽

Cauda Equina ◽

Complete Removal ◽

Leg Pain ◽

Content Type ◽

Single Root ◽

Clear Cell Meningioma ◽

Extensor Hallucis Longus ◽

The Right ◽

Immunohistochemical Analyses

✓ This 32-year-old man had noticed right leg pain for 4 years and developed classic right sciatica after heavy lifting, followed by episodes of buckling of both legs 1 month prior to admission. His medical history included congenital left abducens palsy. Examination revealed a right Lasègue's sign and Fajersztajn's sign with mild weakness of the right extensor hallucis longus. Magnetic resonance imaging revealed a 1.5 × 2.0—cm enhancing intradural lesion at the L3–4 level. Following laminectomy of L-3 and L-4 and intradural exposure, the tumor was found to be draped loosely by the roots of the cauda equina and attached to a single root without any adherence to dura. Transection of the adherent fascicles and typical microdissection of arachnoidal filaments permitted its complete removal without violation of the capsule, allowing the preservation of a large fascicle. The patient's recovery was uneventful. Postoperatively, a mild right lateral foot hypalgesia and diminution of the right ankle jerk implicated the S-1 root. Histological and immunohistochemical analyses diagnosed the specimen as a clear cell meningioma.

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