- Department of Neurosurgery, University of Freiburg, Breisacherstr. 64. 79106 Freiburg, Germany
- Department of Neurosurgery, University of Essen, Hufelandstrasse 55, 45147 Essen, Germany
Department of Neurosurgery, University of Freiburg, Breisacherstr. 64. 79106 Freiburg, Germany
DOI:10.4103/2152-7806.155447Copyright: © 2015 Ohla V. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
How to cite this article: Ohla V, Scheiwe C. Meningiomatosis restricted to the left cerebral hemisphere with acute clinical deterioration: Case presentation and discussion of treatment options. Surg Neurol Int 20-Apr-2015;6:64
How to cite this URL: Ohla V, Scheiwe C. Meningiomatosis restricted to the left cerebral hemisphere with acute clinical deterioration: Case presentation and discussion of treatment options. Surg Neurol Int 20-Apr-2015;6:64. Available from: http://sni.wpengine.com/surgicalint_articles/meningiomatosis-restricted-left-cerebral-hemisphere-acute-clinical-deterioration-case-presentation-discussion-treatment-options/
Background:True multiple meningiomas are defined as meningiomas occurring at several intracranial locations simultaneously without the presence of neurofibromatosis. Though the prognosis does not differ from benign solitary meningiomas, the simultaneous occurrence of different grades of malignancy has been reported in one-third of patients with multiple meningiomas. Due to its rarity, unclear etiology, and questions related to proper management, we are presenting our case of meningiomatosis and discuss possible pathophysiological mechanisms.
Case Description:We illustrate the case of a 55-year-old female with multiple meningothelial meningeomas exclusively located in the left cerebral hemisphere. The patient presented with acute vigilance decrement, aphasia, and vomiting. Further deterioration with sopor and nondirectional movements required oral intubation. Emergent magnetic resonance imaging (MRI) with MR-angiography disclosed a massive midline shift to the right due to widespread, plaque-like lesions suspicious for meningeomatosis, purely restricted to the left cerebral hemisphere. Emergency partial tumor resection was performed. Postoperative computed tomography (CT) scan showed markedly reduction of cerebral edema and midline shift. After tapering the sedation a right-sided hemiparesis resolved within 2 weeks, leaving the patient neurologically intact.
Conclusion:Although multiple meningeomas are reported frequently, the presence of meningeomatosis purely restricted to one cerebral hemisphere is very rare. As with other accessible and symptomatic lesions, the treatment of choice is complete resection with clean margins to avoid local recurrence. In case of widespread distribution a step-by-step resection with the option of postoperative radiation of tumor remnants may be an option.
Meningioma is one of the most frequent adult primary brain tumor accounting for 15% of intracranial tumors and 30% of all central nervous system tumors originating from the meningeal coverings of the spinal cord and the brain. In 1938, the term of multiple meningiomas was coined by Cushing et al.[
Until now, this rare entity and its clinical features are not well understood.
They are known to occur more frequently in women and elderly people. As multiple meningiomas can be associated with other neoplasms such as neurofibromatosis, the distinction between true multiple meningiomas and those which should be considered as a special variant of von Recklinghausen's disease is not always clear-cut. Furthermore several case reports on familal meningiomatosis[
Nevertheless, though being a slow growing tumor[
A 55-year-old right-handed female was transferred to our center because of acute progressive vigilance decrement. There was no family history of malignant tumor or neurofibromatosis. At time of admission to our department, the patient was already intubated, unconscious but moving all extremities spontaneously. Immediate MRI [
The patient was placed under general endotracheal anesthesia and positioned supine with the head turned to the contralateral side. A frontoparietal craniotomy was performed, followed by successive tumor removal paramedial of the falx, at various locations of the frontal lobe, frontal pole, and parietal lobe. Residual tumors remained medial and lateral to the sphenoid bone as well as in the temporal lobe and were planned to be resected in a second step.
Intraoperative histopathological frozen-section analysis indicated a leptomeningeal differentiated tumor. Immunohistochemical studies were performed staining positive for Vimentin and epithelial membrane antigen (EMA). Pathological examinations showed syncytial and epithelial cells as well as indistinct cell borders and multiple psammoma bodies. In addition, the tumor cells were often found in characteristic whorled arrangements. Based on the histopathological features and classic immunostaining, the diagnosis of meningothelial meningeoma, World Health Organization (WHO) grade I was made. Due to delayed postoperative arousal of the patient, a CT was performed featuring a reduction of the midline shift from 18 to 9 mm. Antiedematous therapy was therefore continued. On the 6th postoperative day, the patient slowly regained consciousness, showing spontaneous movements in her left extremities but delayed reactions on her right-sided extremities with a hemiparesis of muscle strength grade 2/5. After extubation on day 6, the patient rapidly improved, demonstrating only minor deficits on her right side of her body (muscle strength grade 4/5). The patient was transferred to a rehabilitation facility on day 11.
Only a mild right foot dorsiflexion deficit (muscle strength grade 5−/5) was noticed at a follow-up visit 3 months later. Subsequent MRI scans with and without gadolinium showed calcified frontal and occipital lesions as well as the known left residual posterior horn, temporoparietal and sphenoid wing meningiomas [Figures
Due to the subtotal removal, subsequent follow-up with MRI is scheduled in 6 months, with option of adjuvant radiation in case of radiographic progression.
Though meningiomas are ordinarily seen in the field of neurosurgery, true meningiomatosis occurs with an incidence of only 2%[
They were first described in 1889 by Anfimow and Blumenau[
As most meningeomas are histologically benign, a spontaneous dissemination through the venous system or seeding after surgery is very unlikely.[
On the other hand, the hypothesis of multicentric neoplastic foci states an origin from multiple sites in which the tumors develop independently under stimulation of a supposed tumor-producing factor. This opinion is supported by Butti et al.,[
This theory is shared by Stangl et al.,[
In the context of the pathogenesis of meningeal neoplasia Morrison et al. could further prove ethylnitrosourea (ENU) to cause meningiomatosis in a mouse model.[
Rapid clinical deterioration due to tumor growth and cerebral edema as in the presented case is very rare and requires urgent treatment. In our case, we decided to perform a two-step-operation with resection of the tumors located in the frontal and parietal region causing midline shift and edema first and in a second step (after completing rehabilitation) the tumors of the lateral and medial sphenoid wing in order to avoid an involvement. The reason was to avoid an involvement of the whole hemisphere in a former healthy patient who was not aware of his disease.
The management of a patient with meningeomatosis can be very challenging.
Though MRI is often sufficient, angiography might be indicated preoperatively to determine the status of the sagittal sinus, the location of cortical veins and the relationship of cortical arteries[
A pretreatment with dexamethasone and proton pump inhibitors should occur prior to surgical resection to decrease the amount of edema and therefore reducing the need for retraction. Ideally, complete surgical resection should be opted, however, total resection might not be possible based upon the size and location of the tumors. In this case, only the main symptomatic mass may be removed[
Although meningeomas are frequently encountered, the presence of meningeomatosis purely restricted to one cerebral hemisphere is seldom. Though its prognosis does not differ from benign solitary meningiomas, open surgery is the gold standard with its aim of complete tumor removal. In emergency cases, a resection of the largest tumors may be useful as a first treatment.
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