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Wang WS, Wu SL, Chan WC, Chen YC. Case report: Steroid-responsive acute chorea as first presentation of the coexistence of Moyamoya and Graves' disease. Front Neurol 2023; 14:1170837. [PMID: 37456632 PMCID: PMC10338861 DOI: 10.3389/fneur.2023.1170837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 06/01/2023] [Indexed: 07/18/2023] Open
Abstract
Background Chorea is a movement disorder characterized by abrupt, rapid, and uncontrollable, random movements from one part of the body to another with motor impersistence. Sporadic chorea is rarely caused by either thyrotoxicosis or Moyamoya disease (MMD). Methods and results In this case report, we describe a female patient with chorea with the rare coexistence of Graves' disease and Moyamoya disease. Tc-99m ethyl cysteinate dimer (ECD) brain perfusion single-photon emission computed tomography (SPECT) showed mild to moderate hypoperfusion in bilateral frontal and left temporal regions. After administering dexamethasone 20 mg for 5 days, her choreic movement symptoms recovered rapidly. Conclusion Although uncommon, thyrotoxicosis and Moyamoya disease can co-occur, especially in Asian female adults. Excessive thyroid hormones contribute to the dysregulation of neurotransmitters in basal ganglia-thalamocortical circuits. Moyamoya disease is responsible for ischemic changes affecting the excitatory-inhibitory circuits between the basal ganglia and the neocortex. Under a state of coexistence, thyrotoxicosis exaggerates cerebral metabolism, aggravating the impaired cerebral perfusion induced by Moyamoya disease. Moreover, inflammatory reactions caused by thyroid autoantibodies may also promote the progression of Moyamoya disease. In our experience, treatment with steroids may not only synergize the anti-thyroid effect but may also be a way to modulate the neurotransmitters within the basal ganglia or restore cerebral perfusion. We suggest that evaluation of the thyroid function status in Moyamoya disease is essential.
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Affiliation(s)
- Wei-Sheng Wang
- Department of Neurology, Changhua Christian Hospital, Changhua, Taiwan
| | - Shey-Lin Wu
- Department of Neurology, Changhua Christian Hospital, Changhua, Taiwan
- Department of Electrical Engineering, National Changhua University of Education, Changhua, Taiwan
| | - Wei-Chieh Chan
- Department of Neurology, Changhua Christian Hospital, Changhua, Taiwan
| | - Yen-Chung Chen
- Department of Neurology, Changhua Christian Hospital, Changhua, Taiwan
- Department of Public Health, Chung Shan Medical University, Taichung, Taiwan
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Neves N, Coelho S, Marto N, Horta AB, Gouveia R. Moyamoya Disease and Syndrome in Caucasian Patients. Cureus 2023; 15:e37768. [PMID: 37213953 PMCID: PMC10194192 DOI: 10.7759/cureus.37768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/18/2023] [Indexed: 05/23/2023] Open
Abstract
Moyamoya disease is a unique cerebrovascular disease characterized by narrowing of the terminal portion of internal carotid arteries and circle of Willis, with consequent development of a network of collateral vessels in response to brain ischemia. Moyamoya vascular pattern can be idiopathic (Moyamoya disease), is more likely to occur in individuals of Asian ascent and in the pediatric age, or is associated with other diseases (Moyamoya syndrome). We present two cases of stroke in young adults, where workup revealed Moyamoya-type vascular changes. The first case report is of a 42-year-old woman presenting with hemorrhagic stroke, with classic angiographic findings of Moyamoya disease, otherwise asymptomatic. The second case concerns a 36-year-old woman admitted with ischemic stroke; besides the typical angiographic pattern of Moyamoya, the patient was diagnosed with antiphospholipid antibody syndrome and Graves' disease, two conditions known to be associated with this vasculopathy. These case reports illustrate the need to consider this entity in the etiological evaluation of ischemic and hemorrhagic cerebrovascular events, even in Western countries, since management and secondary prevention require specific approaches.
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Affiliation(s)
- Nuno Neves
- Internal Medicine, Hospital da Luz Lisboa, Lisbon, PRT
| | - Susana Coelho
- Internal Medicine, Hospital da Luz Lisboa, Lisbon, PRT
| | - Natália Marto
- Internal Medicine, Hospital da Luz Lisboa, Lisbon, PRT
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Moyamoya associated with Turner syndrome in a patient with type 2 spinocerebellar ataxia-Occam's razor or Hickam's dictum: a case report. BMC Neurol 2022; 22:381. [PMID: 36209056 PMCID: PMC9547406 DOI: 10.1186/s12883-022-02912-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 10/05/2022] [Indexed: 11/10/2022] Open
Abstract
Background Turner syndrome (TS) is a rare condition associated with a completely or partially missing X chromosome that affects 1 in 2500 girls. TS increases the risk of autoimmune diseases, including Graves’ disease (GD). Moyamoya disease is a rare cerebral arteriopathy of unknown etiology characterized by progressive bilateral stenosis of the internal carotid artery and its branches. Both TS and GD have been associated with Moyamoya. Type 2 spinocerebellar ataxia (SCA2) is an autosomal dominant cerebellar ataxia caused by a CAG repeat expansion in ATXN2. We present the first case of Moyamoya syndrome in a patient with a previous diagnosis of TS and GD who tested positive for SCA2 and had imaging findings compatible with an overlap of SCA2 and Moyamoya. Case presentation A 43-year-old woman presented with mild gait imbalance for 2 years. Her family history was positive for type 2 spinocerebellar ataxia (SCA2). She had been diagnosed with Turner Syndrome (45,X) and Graves disease three years before. Brain MRI revealed bilateral frontal and parietal cystic encephalomalacia in watershed zones, atrophy of pons, middle cerebellar peduncles and cerebellum. MR angiography showed progressive stenosis of both internal carotid arteries with lenticulostriate collaterals, suggestive of Moya-Moya disease. Molecular analysis confirmed the diagnosis of SCA2. Conclusions With increased availability of tools for genetic diagnosis, physicians need to be aware of the possibility of a single patient presenting two or more rare diseases. This report underscores the modern dilemmas created by increasingly accurate imaging techniques and available and extensive genetic testing.
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Ramírez-Quiñones J, Wahlster S, Barrientos-Imán D, Otiniano-Sifuentes R, Calle-La Rosa P, Valencia-Chávez A, Abanto-Argomedo C. Bilateral Ischemic Strokes Secondary to Moyamoya Syndrome Associated With Graves Thyrotoxicosis in a Patient of Amerindian Descent From Peru: A Case Report. Cureus 2022; 14:e26546. [PMID: 35936193 PMCID: PMC9347302 DOI: 10.7759/cureus.26546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/03/2022] [Indexed: 11/20/2022] Open
Abstract
Moyamoya disease (MMD) is characterized by progressive stenosis of the distal portion of the internal carotid artery and its two main branches, the middle cerebral artery, and the anterior cerebral artery. Clinically, MMD can present with ischemic or hemorrhagic cerebrovascular events. The term Moyamoya syndrome (MMS) is used when the characteristic Moyamoya vasculopathy presents in association with other conditions such as Graves' disease (GD). We report a case of a 34-year-old, right-handed male patient of Amerindian descent. He presented to the emergency room with a two-month history of palpitation, fatigue, and weight loss associated with sudden-onset left hemiparesis, facial asymmetry, and dysarthria. His workup was remarkable for elevated levels of thyroid hormones with the presence of autoantibodies and radiological findings typical of MMS. Moyamoya syndrome in association with Graves' disease has increasingly been noted in Latin American patients and should be considered in the differential diagnosis in the appropriate clinical context.
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Eslami-Amirabadi M, Sajjadi SA. The relation between thyroid dysregulation and impaired cognition/behaviour: An integrative review. J Neuroendocrinol 2021; 33:e12948. [PMID: 33655583 PMCID: PMC8087167 DOI: 10.1111/jne.12948] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 12/19/2020] [Accepted: 01/29/2021] [Indexed: 12/20/2022]
Abstract
Despite decades of research on the relation between thyroid diseases and cognition, the nature of this relationship remains elusive. An increasing prevalence of cognitive impairment and thyroid dysfunction has been consistently observed with ageing. Also, there appears to be an association between thyroid disorders and cognitive decline. Given the increasing global burden of dementia, elucidating the relationship between thyroid disorders as a potentially modifiable risk factor of cognitive impairment was the main goal of this review. We summarise the current literature examining the relationship between thyroid hormonal dysregulation and cognition or behaviour. We present the available imaging and pathological findings related to structural and functional brain changes related to thyroid hormonal dysregulation. We also propose potential mechanisms of interaction between thyroid hormones, autoantibodies and cognition/behaviour. Effects of gender, ethnicity and environmental factors are also briefly discussed. This review highlights the need for long-term prospective studies to capture the course of brain functional changes associated with the incidence and progression of thyroid dysregulations along with the confounding effects of non-modifiable risk factors such as gender and ethnicity. Moreover, double-blind controlled clinical trials are necessary to devise appropriate treatment plans to prevent cognitive consequences of over or undertreatment of thyroid disorders.
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Wang HK, Huang WH, Chen KT. An extensive posterior circulation infarction secondary to primary hyperthyroidism accompanied with superior mesenteric artery syndrome: A case report and description of patho-physiological association. Medicine (Baltimore) 2020; 99:e22664. [PMID: 33181647 PMCID: PMC7668437 DOI: 10.1097/md.0000000000022664] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 08/25/2020] [Accepted: 09/10/2020] [Indexed: 11/26/2022] Open
Abstract
INTRODUCTION Hyperthyroidism-related anterior circulation ischemic events have been well documented; however, posterior circulation infarction is rarely reported, not to mention with superior mesenteric artery syndrome (SMAS), which has never been reported concurrently. We describe, to the best of our knowledge, the first case of hyperthyroidism-related cerebellar infarction accompanied with SMAS. PATIENT CONCERNS A 22-year-old women presented with palpitation, postprandial vomiting, and acute body weight loss. Enlarged thyroid gland was discovered in physical examination and Graves disease was diagnosed by blood test; therefore, Propylthiouracil and β-blocker were prescribed. Sudden onset conscious disturbance accompanied with apnea was noted during hospitalization. DIAGNOSIS Computed tomography (CT) revealed cerebellar infarction with severe cerebellar swelling and tonsil herniation; hence, emergent suboccipital craniotomy and bilateral tonsillectomy were performed. INTERVENTIONS Nevertheless, persisted poor passage of liquid diet during nasogastric tube feeding was noted after operation. CT of abdomen showed a sharp aorta-SMA angle (15°) and a short distance between aorta and SMA (6 mm) indicating a diagnosis of SMAS. OUTCOMES After parental nutrition supplement and progressive rehabilitation program, she recovered to a modified Rankin Scale of 3. CONCLUSION Although rarely reported, hyperthyroidism-related sympathetic hyperstimulation, vasculopathy could result in potentially deadly posterior circulation infarction. Furthermore, SMAS should be considered in the cases of hyperthyroidism with prolonged gastrointestinal symptoms even after treatment and should be treated simultaneously, since SMAS exacerbates depletion of intravascular volume. Further study to clarify the relation between hyperthyroidism and posterior circulation hemodynamic status is suggested.
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Affiliation(s)
- Hong-Kai Wang
- Department of Neurosurgery, Chang Gung Memorial Hospital at Linkou
| | | | - Ko-Ting Chen
- Department of Neurosurgery, Chang Gung Memorial Hospital at Linkou
- Ph.D. Program in Biomedical Engineering, Chang Gung University, Taoyuan, Taiwan
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Nakamura H, Sato K, Yoshimura S, Hayashi Y, Izumo T, Tokunaga Y. Moyamoya Disease Associated with Graves' Disease and Down Syndrome: A Case Report and Literature Review. J Stroke Cerebrovasc Dis 2020; 30:105414. [PMID: 33130479 DOI: 10.1016/j.jstrokecerebrovasdis.2020.105414] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 09/26/2020] [Accepted: 10/14/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Moyamoya vessels are cerebral vasculopathies characterized by net-like collateral vessel formation at the cerebral basal area and stenosis of the terminal internal carotid artery, proximal middle cerebral artery, and anterior cerebral artery. A diagnosis of Moyamoya disease depends on the bilateral presence of Moyamoya vessels. Moyamoya disease associated with Graves' disease has rarely been reported to be a cause of ischemic events due to hyperthyroidism. However, there are extremely rare cases of Moyamoya disease with concurrent Graves' disease and Down syndrome. We aimed to report such a case, and to compare these cases' clinical features, pathogenesis, and treatment effects to those of the cases of concurrent Moyamoya disease and Graves' disease alone. METHODS We performed an English literature search using the PubMed database and the keywords Moyamoya, quasi-Moyamoya, Graves' disease, thyrotoxicosis, Down syndrome, and trisomy 21. RESULTS Only five cases of Moyamoya disease with Graves' disease and Down syndrome have been reported, including our own. Four patients were female (80%), and all underwent antithyroid therapy and experienced ischemic episodes, including transient ischemic attacks. At the time of their vascular accident, two patients were in a thyrotoxic state; only our patient was in a euthyroid state. The mean age was 15.6 years (standard deviation: 6.1), which was younger than the mean age of 31.4 years (standard deviation: 13) in patients with Moyamoya disease and Graves' disease alone. Down syndrome is commonly associated with abnormal vascular networks due to increased endostatin concentrations or immunological abnormalities such as those that occur in Graves' disease. Graves' disease accelerates the progression of Moyamoya disease and ischemic attacks due to atherosclerosis, enhances sympathetic nervous system activity and immunological changes. As compared to Moyamoya disease patients, patients with concurrent Graves' disease only and Moyamoya disease patients with concurrent Graves' disease and Down syndrome may experience accelerated disease progression or more frequent ischemic attacks. CONCLUSION Early imaging follow-ups and strict control of thyroid function are necessary in such cases; if ischemic attacks have already occurred, revascularization surgery may be effective.
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Affiliation(s)
- Hikaru Nakamura
- Department of Neurosurgery, Nagasaki Prefecture Shimabara Hospital, 7895 Shimokawasiri, Shimabara, Nagasaki 855-0816, Japan.
| | - Kei Sato
- Department of Neurosurgery, Nagasaki Prefecture Shimabara Hospital, 7895 Shimokawasiri, Shimabara, Nagasaki 855-0816, Japan
| | - Shota Yoshimura
- Department of Neurosurgery, Nagasaki Prefecture Shimabara Hospital, 7895 Shimokawasiri, Shimabara, Nagasaki 855-0816, Japan
| | - Yukishige Hayashi
- Department of Neurosurgery, Nagasaki Prefecture Shimabara Hospital, 7895 Shimokawasiri, Shimabara, Nagasaki 855-0816, Japan
| | - Tsuyoshi Izumo
- Department of Neurosurgery, Nagasaki University School of Medicine, 1-7-1 Sakamoto, Nagasaki, Nagasaki 852-8501, Japan
| | - Yoshiharu Tokunaga
- Department of Neurosurgery, Nagasaki Prefecture Shimabara Hospital, 7895 Shimokawasiri, Shimabara, Nagasaki 855-0816, Japan
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Hamano E, Nishimura M, Mori H, Satow T, Takahashi JC. Intracranial arterial stenosis associated with Hashimoto's disease: angiographic features and clinical outcomes. BMC Neurol 2020; 20:345. [PMID: 32928146 PMCID: PMC7490896 DOI: 10.1186/s12883-020-01923-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 09/08/2020] [Indexed: 12/04/2022] Open
Abstract
BACKGROUND Hashimoto's disease has reportedly been associated with stroke; however, cerebrovascular morphology and clinical course remain poorly documented. The present study aimed to determine the angiographic features and clinical outcomes of intracranial arterial stenosis (IAS) associated with Hashimoto's disease in a retrospective cohort. METHODS Overall, 107 adult patients with IAS were screened for anti-thyroid antibodies; of these, 26 patients tested positive. The 42 affected hemispheres were classified into subgroups according to the steno-occlusion site and the development of abnormal collateral (moyamoya) vessels. These subgroups were dichotomized into moyamoya vessels positive (MM type) and negative (non-MM type). The initial presentation, IAS progression, and vascular events during the follow-up period were compared. RESULTS The following sites of stenosis were identified: the bifurcation of the internal carotid artery in 11 (26.2%), M1 or A1 in 29 (69.0%), and more distal (M2-M4/A2-A4) in 2 (4.8%) hemispheres. Further, 17 hemispheres were categorized into the MM type and 25 were classified into the non-MM type. During the follow-up period (mean 2.5 years), IAS progression was identified in 8 (32%) hemispheres of the non-MM type and 0 (0%) hemispheres of the MM type (p = 0.041). Ischemic attacks occurred in 5 (20.0%) hemispheres of the non-MM type (4.6%/year) and 0 hemispheres of the MM type (p = 0.08). Further, 4 (23.5%) hemispheres of the MM type experienced intracerebral hemorrhage, whereas none of the non-MM type hemorrhaged (p = 0.012). CONCLUSIONS Hashimoto's disease-associated IAS exhibits various angiographic morphologies, resulting in different clinical presentations. Screening for anti-thyroid antibodies and careful management based on vascular morphology appears important in adults with IAS.
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Affiliation(s)
- Eika Hamano
- Department of Neurosurgery, National Cerebral and Cardiovascular Center, Kishibe-Shinmachi 6-1, Suita City, Osaka, 564-8565, Japan
| | - Masaki Nishimura
- Department of Neurosurgery, National Cerebral and Cardiovascular Center, Kishibe-Shinmachi 6-1, Suita City, Osaka, 564-8565, Japan
| | - Hisae Mori
- Department of Neurosurgery, National Cerebral and Cardiovascular Center, Kishibe-Shinmachi 6-1, Suita City, Osaka, 564-8565, Japan
| | - Tetsu Satow
- Department of Neurosurgery, National Cerebral and Cardiovascular Center, Kishibe-Shinmachi 6-1, Suita City, Osaka, 564-8565, Japan
| | - Jun C Takahashi
- Department of Neurosurgery, National Cerebral and Cardiovascular Center, Kishibe-Shinmachi 6-1, Suita City, Osaka, 564-8565, Japan.
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Progressive stenosis and radiological findings of vasculitis over the entire internal carotid artery in moyamoya vasculopathy associated with graves' disease: a case report and review of the literature. BMC Neurol 2019; 19:34. [PMID: 30825882 PMCID: PMC6397453 DOI: 10.1186/s12883-019-1262-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 02/19/2019] [Indexed: 12/01/2022] Open
Abstract
Background Moyamoya vasculopathy (MMV) associated with Graves’ disease (GD) is a rare condition resulting in ischemic stroke accompanied by thyrotoxicity. Radiological findings of vasculitis have been reported in the walls of distal internal carotid arteries (ICAs) in these patients; however, no reports have described in detail the processes of progression of the lesions in the proximal ICA. Moreover, treatments to prevent recurrence of ischemic stroke and progression of MMV have not yet been sufficiently elucidated. Case presentation We report a progressive case of MMV associated with GD and review the literature to clarify relationships among recurrence, progression, thyrotoxicity and treatment. Our patient developed cerebral infarction during thyrotoxicity with no obvious stenosis of ICAs. Five months later, transient ischemic attacks recurred with thyrotoxicity. Antiplatelet therapy and intravenous methylprednisolone stopped the attacks. Stenosis of the left ICA from the proximal to distal portion and champagne bottle neck sign (CBN) were found. She declined any surgery. Afterward, gradual progression with mild thyrotoxicity was observed. Eventually, we found smooth, circumferential, concentric wall thickening with diffuse gadolinium enhancement of the left ICA from the proximal to the distal portion on T1-weighted imaging, suggesting vasculitis radiologically. The clinical and radiological similarities to Takayasu arteritis encouraged us to provide treatment as for vasculitis of medium-to-large vessels. In a euthyroid state and after administration of prednisolone and methotrexate, improved flow in the cerebrovascular arteries on magnetic resonance angiography was observed. Based on our review of the literature, all cases with recurrence or progression were treated with anti-thyroid medication (ATM) alone and accompanied by thyrotoxicity. CBN was observed in all previous cases for which images of the proximal ICA were available. Conclusions We report the details of progressive stenosis from a very early stage and radiological findings of vasculitis over the entire ICA in MMV associated with GD. Cerebral infarction can occur with no obvious stenosis of the ICA. We treated the patient as per vasculitis of a medium-to-large vessel. Management of GD by ATM alone seems risky in terms of recurrence. Adequate management of GD and possible vasculitis may be important for preventing recurrence and progression. Electronic supplementary material The online version of this article (10.1186/s12883-019-1262-1) contains supplementary material, which is available to authorized users.
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Smoke and Mirrors: Moyamoya Syndrome. Am J Med 2017; 130:1045-1048. [PMID: 28601543 DOI: 10.1016/j.amjmed.2017.05.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2017] [Revised: 05/15/2017] [Accepted: 05/15/2017] [Indexed: 11/22/2022]
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Choi J, Suthakar P, Farmand F. Fatal outcome in a Hispanic woman with moyamoya syndrome and Graves' disease. Endocrinol Diabetes Metab Case Rep 2016; 2016:EDM160045. [PMID: 27857839 PMCID: PMC5097141 DOI: 10.1530/edm-16-0045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Accepted: 10/24/2016] [Indexed: 11/08/2022] Open
Abstract
We describe the case of a young Hispanic female who presented with thyrotoxicosis with seizures and ischemic stroke. She was diagnosed with a rare vasculopathy - moyamoya syndrome. After starting antithyroid therapy, her neurologic symptoms did not improve. Acute neurosurgical intervention had relieved her symptoms in the immediate post-operative period after re-anastomosis surgery. However, 2 post-operative days later, she was found to be in status epilepticus and in hyperthyroid state. She quickly deteriorated clinically and had expired a few days afterward. This is the second case in literature of a fatality in a patient with moyamoya syndrome and Graves' disease. However, unlike the other case report, our patient had undergone successful revascularization surgery. We believe her underlying non-euthyroid state had potentiated her clinical deterioration. Case studies have shown positive correlation between uncontrolled hyperthyroidism and stroke-like symptoms in moyamoya syndrome. Mostly all patients with these two disease processes become symptomatic in marked hyperthyroid states. Thus, it may be either fluctuations in baseline thyroid function or thyrotoxicosis that potentiate otherwise asymptomatic moyamoya vasculopathy. LEARNING POINTS Awareness of the association between Graves' disease and moyamoya syndrome in younger patients presenting with stroke-like symptoms.Obtaining euthyroid states before undergoing revascularization surgery may protect the patient from perioperative mortality and morbidity.Although moyamoya disease is usually thought to be genetically associated, there are reports that thyroid antibodies may play a role in its pathogenesis and have an autoimmune link.Fluctuations in baseline thyroid function for patients with known Graves' disease may be a potentiating factor in exacerbating moyamoya vasculopathy.
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Affiliation(s)
| | - Perin Suthakar
- Neurology , Arrowhead Regional Medical Center, Colton, California , USA
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