A 30-year-old woman from Japan with a history of hypothyroidism and chronic intermittent right side throbbing headache presented with a 3-month history of intermittent right side neck pain that was aggravated with neck movement and associated with mild blurry vision. Vital signs revealed a blood pressure of 106/78 mm Hg in bilateral upper extremities, a heart rate of 72 beats/min, and a normal temperature. Physical examination displayed normal findings aside from a low-pitched bruit in the right side neck. Laboratory findings revealed a normal complete blood count and an unremarkable basic metabolic profile. Magnetic resonance (MR) angiogram of the neck and brain revealed aneurysmal dilation of the right innominate and proximal right common carotid arteries associated with circumferential wall thickening of the right common carotid artery. It also revealed a 75% focal stenosis by NASCET criteria in the right common carotid artery distal to the aneurysmal dilatation (►Fig. 1a, b).To further explore, MR aortogram with T2-weighted images (VIBE technique) were negative for aortic wall thickening, stenosis, dilatation, or involvement of the visceral vessels. It redemonstrated the aneurysmal dilatation of the right innominate artery with a maximum diameter measuring 2.0 cm as well as aneurysmal dilatation and stenosis of the right common carotid artery.Further laboratory work up revealed an elevated erythrocyte sedimentation rate (ESR) of 48 mm/h with a normal C-reactive protein (CRP) level of 0.8 mg/dL.On the basis of her gender, place of origin, age, clinical presentation, laboratory, and imaging findings, the diagnosis of Takayasu arteritis was made. As her symptoms were mild and inflammatory markers were not significantly elevated, management was started with prednisone 20 mg and aspirin 81 mg daily. The patient's symptoms improved over the next month and repeat laboratory work displayed normalized ESR (18 mm/h) and CRP (0.7 mg/dL) levels. Repeat MR aortogram revealed persistent right innominate and right common Keywords ► Takayasu arteritis ► vasculitis ► stenosis ► aneurysm
AbstractTakayasu arteritis is a rare, chronic large vessel vasculitis that primarily affects women aged 10 to 40 years of Asian descent. The inflammatory processes of the disease can result in stenosis and/or occlusion of the aorta and its branches, causing a wide range of symptoms. Rarely, damage of the elastic lamina or muscular media can cause aneurysmal dilation of the affected vessel. Diagnosis is based on the clinical presentation, laboratory proof of inflammation, and imaging finding of wall thickening in the acute phase and later arterial stenosis or occlusion. Management includes disease control with immunosuppression and some patients might require revascularization. Here, we present a rare case of Takayasu arteritis with both right common carotid artery aneurysmal dilation and stenosis at a conforming site. Although aneurysmal dilation has been sparsely reported in the Takayasu arteritis literature, our case may represent the disti...