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Published on: March 7, 2017
Pontine Myopericytoma: Case Report and Literature Review
Maoyuan Guo1, Xue Chen1, Gaofeng Zhang1
1Department of Radiology, The Second Affiliated Hospital of Zun Yi Medical University, Zunyi, China.
Abstract:
Myopericytoma (MPC) is a benign soft tissue tumor that develops from perivascular myoid cells and is part of the perivascular tumor group. MPC most commonly occurs in the subcutaneous soft tissues of the extremities, while intracranial MPC is remarkably rare. Herein, we report the case of a 45-year-old woman with myopericytoma who had a 2-week history of recurrent dizziness. Magnetic resonance imaging (MRI) revealed an irregular mass in the pons, with nodular enhancement of the mass on contrast-enhanced scans. The mass was considered a vascular lesion and was highly suspected to be a hemangioblastoma, prompting surgical intervention for the patient. The postoperative pathological report corrected the initial diagnosis, hemangioblastoma, to MPC. Intracranial MPC is extremely rare and there are no detailed imaging sources for this condition; furthermore, MPC occurrence in the pons has not been reported previously. This report presents the etiological characteristics intracranial MPC as visualized through MRI data alongside a comparative discussion on other reported diagnoses that resemble MPC. The case findings will provide a more widespread understanding for radiologists regarding the differential diagnosis of intracranial blood-rich supply lesions.
Insights
This case report details an extremely rare intracranial myopericytoma (MPC) in the pons, initially misdiagnosed as hemangioblastoma. The findings highlight the importance of considering MPC in the differential diagnosis of brain lesions.
Area of Science:
- Neurology
- Pathology
- Radiology
Background:
- Myopericytoma (MPC) is a rare benign tumor originating from perivascular myoid cells.
- Intracranial occurrence of MPC is exceptionally uncommon, with limited imaging data available.
- The pons is a particularly rare location for intracranial tumors.
Observation:
- A 45-year-old woman presented with recurrent dizziness.
- MRI revealed an irregular, enhancing mass in the pons, suspected to be a hemangioblastoma.
- Surgical intervention was performed, and pathological analysis confirmed the diagnosis as MPC.
Findings:
- This is the first reported case of myopericytoma occurring in the pons.
- The imaging characteristics of this intracranial MPC on MRI are presented.
- Differential diagnoses for similar-appearing intracranial vascular lesions are discussed.
Implications:
- This case expands the understanding of rare intracranial tumors.
- Radiologists should consider MPC in the differential diagnosis of enhancing brainstem lesions.
- Further research into the imaging features of intracranial MPC is warranted.
