Pheochromocytoma is a rare cause of hypertension in the general population. Only isolated reports show an association with acute obstructive arterial thrombosis. A 50-year-old chronically noncompliant woman with a known unresected pheochromocytoma presented to the emergency department with ataxia. Imaging confirmed a right-sided ischemic stroke. During her hospital stay, the patient developed signs consistent with acute right upper extremity ischemia resulting from occlusion in the distal right subclavian, axillary, and proximal brachial arteries. Emergent open thrombectomy was successfully performed. In patients with an unresected pheochromocytoma, one must consider acute arterial thrombosis as a rare but potentially limb-threatening and even life-threatening complication.
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