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An extracranial invasive meningioma mimicking malignant bone tumor - "carpet meningioma"
Sahil I Panjvani1, Minesh B Gandhi, Ankur N Sarvaiya
13 Year Resident, Department of Pathology, Smt. NHL Municipal Medical College , Ahmedabad, Gujarat, India .
Abstract:
Meningioma is a common benign intracranial neoplasm. The incidence of an extracranial extension to other sites is rare. Due to the neglected intracranial component, the chances of an under diagnosis or a misdiagnosis of the extracranial component is there, which may adversely affect the management and therefore, the prognosis. Here, we are reporting a case of a 39 years old male patient with a preoperative probable diagnosis of a malignant bone tumour which involved the skull bone, which was made, based on the imaging studies , which was histopathologically found to be an invasive meningioma with an extensive extracranial skull vault involvement and was confirmed by immunohistochemistry. We have proposed a term, "carpet meningioma" for this extracranial invasive meningioma, because it had covered the skull vault like a carpet. The follow up studies after 1 year have revealed no evidence of a recurrence.
Insights
This case report details a rare invasive meningioma with extensive extracranial skull vault involvement, termed "carpet meningioma." The patient showed no recurrence after one year, highlighting diagnostic and management considerations for this unusual presentation.
Area of Science:
- Neurosurgery
- Oncology
- Pathology
Background:
- Meningiomas are common benign intracranial neoplasms.
- Extracranial extension of meningiomas is rare.
- Misdiagnosis of extracranial meningiomas can negatively impact patient prognosis.
Purpose of the Study:
- To report a rare case of invasive meningioma with extensive extracranial skull vault involvement.
- To introduce the term "carpet meningioma" for this specific presentation.
- To discuss diagnostic challenges and management implications.
Main Methods:
- Case presentation of a 39-year-old male patient.
- Preoperative diagnosis based on imaging studies.
- Histopathological examination and immunohistochemistry confirmation.
- 1-year follow-up for recurrence.
Main Results:
- Initial imaging suggested a malignant bone tumor.
- Histopathology revealed invasive meningioma with extensive extracranial skull vault involvement.
- Immunohistochemistry confirmed the diagnosis.
- No evidence of recurrence at 1-year follow-up.
Conclusions:
- Invasive meningioma with extensive extracranial involvement presents a diagnostic challenge.
- The term "carpet meningioma" is proposed for this rare entity.
- Early and accurate diagnosis is crucial for appropriate management and favorable prognosis.
