Intracranial Hemangiopericytoma with Right-Sided Aortic Arch: A Case Report and Comprehensive Diagnosis and Treatment Analysis

1. Abstract Hemangiopericytoma are clinically rare, and easily confused with meningioma. Right-sided aortic arch is also an infrequent disease of congenital cardiovascular variability. The intracranial hemangiopericytoma associated with right-sided aortic arch has not been reported in the literature. We are here to report a case of right aortic arch concurrent with intracranial hemangiopericytoma, the patient was initially thought to be a simple meningioma, but was eventually diagnosed as a hemangiopericytoma with right aortic arch and multiple intracranial vascular stenosis and malformation. Whether there is a genetic correlation between the two provides a potential research direction for us.Therefore, the diagnosis and treatment of some rare diseases should be more comprehensive analysis and evaluation. Adequate examination and accurate diagnosis are crucial, which will directly affect the efficacy of surgery and the prognosis of patients. 2. Introduction Hemangiopericytoma (HPC) is a rare mesenchymal tumor generally occurring in adults and originating from the pericytes, clinically rare, and easily confused with meningioma [1,2]. Right-sided aortic arch (RAA) is also an infrequent disease of congenital cardiovascular variability with incidence is only 0.1% [3]. RAA is often associated with many secondary vascular mutations. However, the intracranial hemangiopericytoma associated with right-sided aortic arch has not been reported in the literature. We are here to report a case of right aortic arch concurrent with intracranial hemangiopericytoma, the patient was initially thought to be a simple meningioma, but was eventually diagnosed as a hemangiopericytoma with right aortic arch and multiple intracranial vascular stenosis and malformation. The diagnostic and therapeutic challenges strongly emphasize the importance of this topic for future investigations. 3. Case Presentation The patient was a 34-year-old female who was admitted with reduced binocular vision accompanied by headache and dizziness for 3 months. The patient began to have headache and dizziness 3 months ago, which appeared intermittently. Since the patient had just completed pregnancy and combined with high blood pressure, the other hospital initially considered to give antihypertensive treatment for pregnancy combined with hypertension. Due to the progressive aggravation of the symptoms, combined with binocular vision loss, nausea and vomiting, walking instability and other symptoms, the patient went to our hospital for further diagnosis and treatment. Our CT showed cerebellar space-occupying lesions, combined with mild hydrocephalus. Physical examination: State of consciousness: sanity, bilateral pupil diameter was about 4.5mm, sensitive to light reflection, papilledema, limb muscle strength was level 5. Enhanced MRI indicate that there was space-occupying lesion in the right cerebellum, growth in the tentorial lobes of the cerebellum, the size of which was about 3.5*2.9*4.3cm, compres-