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Cystic intracranial meningioma
A L Kwan1, S L Howng, S L Hwang
1Department of Surgery, Kaohsiung Medical College, Taiwan, Republic of China.
Gaoxiong Yi Xue Ke Xue Za Zhi = the Kaohsiung Journal of Medical Sciences
|November 1, 1992
Summary
Cystic intracranial meningiomas, accounting for 9% of cases, often present with indistinct morphology, leading to potential misdiagnosis. Microsurgery is recommended for complete cyst wall removal to prevent recurrence.
Area of Science:
- Neurosurgery
- Neuropathology
Background:
- Intracranial meningiomas are common primary tumors.
- Cystic changes in meningiomas are less common but can complicate diagnosis and treatment.
Purpose of the Study:
- To investigate the incidence, characteristics, and management of intracranial meningiomas with cystic change.
- To highlight diagnostic challenges and recommend optimal surgical approaches.
Main Methods:
- Retrospective review of 100 intracranial meningioma cases.
- Analysis of nine cases with cystic meningiomas diagnosed between April 1983 and April 1991.
- Histopathological classification and assessment of cyst location (intratumoral vs. peritumoral).
Main Results:
- Nine out of 100 (9%) intracranial meningiomas exhibited cystic change.
- Patients ranged from 40 to 75 years old (5 males, 4 females).
- Seven tumors were meningotheliomatous, one psammomatous, and one angioblastic; all exceeded 2 cm.
- Nauta's type II cystic meningiomas were prone to preoperative misdiagnosis as glioma or metastatic tumors.
Conclusions:
- Cystic intracranial meningiomas represent a distinct subgroup with diagnostic challenges.
- Complete microsurgical removal of the cyst wall is crucial for preventing recurrence.
- Early and accurate diagnosis is vital for appropriate patient management.