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Question: Does anyone know of other medical conditions that mimic a pheochromocytoma? 24 Hour urine test was positive for catecholamines, episodes of increased heart rate, high blood pressure, followed by periods of no problems. MRI and MIBG scan negative for a tumor and Dr's say they have no answers. Anyone have any ideas? wouldnt thyroid problems show in blood work? I was told thyroid was normal.

Answer: thyrotoxicosis.if thyroid hormone levels are normal ,paraneoplastic syndrome with increased catecholamines ,

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