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Updated: Jan 26, 2026

High-resolution Optical Mapping of the Mouse Sino-atrial Node
Published on: December 2, 2016
Pheochromocytoma and sinus node dysfunction
Mary Lee1, Dane Langsjeon2, Srikala Devabhaktuni2
1Department of Internal Medicine, Baylor Scott & White Medical Center-TempleTempleTexas.
Abstract:
Pheochromocytomas are rare catecholamine-producing neuroendocrine tumors that can lead to detrimental outcomes; if identified and treated, they are associated with a good prognosis. The clinical presentation can vary greatly but is classically associated with tachycardia, headaches, and hypertension. Bradyarrhythmias and sinus node dysfunction are uncommon complications of this condition. We present a case of pheochromocytoma associated with sinus pauses and junctional escape rhythms that had complete resolution of sinus node dysfunction after adrenalectomy.
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