Snuff-induced hypertension in pheochromocytoma

Area of Science:

• Cardiology
• Endocrinology
• Oncology

Background:

• Pheochromocytoma is a rare tumor causing high blood pressure.
• Myocardial ischemia is a serious heart condition due to reduced blood flow.
• Snuff use is a potential trigger for hypertensive crises.

Observation:

• A 69-year-old woman with pheochromocytoma experienced paroxysmal hypertension and myocardial ischemia after dipping snuff.
• Her diagnosis was delayed due to a falsely low urine metanephrine level.

Findings:

• The low urine metanephrine result was caused by meglumine interference.
• Meglumine was present in the urine from contrast coronary angiography performed on the same day.

Implications:

• This case highlights the importance of considering medication and test interferences in diagnosing pheochromocytoma.
• Accurate diagnostic testing is crucial for timely management of pheochromocytoma and preventing cardiovascular events.