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A 54-year-old male presents to his primary care physician with complaints of severe diarrhea, flushing of the face, and several incidents of trouble breathing over the past week. A CT scan (Figure A) is obtained and shows a primary tumor in the small bowel (blue arrow) as well as metastasis to the liver (yellow arrow). The patient is referred to a surgeon for further management. The surgeon schedules a date to attempt surgical removal of all tumor tissue. The surgeon also decides to start the patient on a medication to control symptoms prior to surgery. Which of the following medications is the best choice for the management of this patient's symptoms?
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A 58-year-old female presents to her primary care physician with a 1-month history of facial and chest flushing, as well as intermittent diarrhea and occasional difficulty breathing. On physical exam, a new-onset systolic ejection murmur is auscultated and is loudest at the left second intercostal space. Subsequent echocardiography reveals leaflet thickening secondary to fibrous plaque deposition on both the pulmonic and tricuspid valves. Which of the following laboratory abnormalities would most likely in this patient?
Decreased serum chromogranin A
Elevated serum bicarbonate
Elevated urinary vanillylmandelic acid
Elevated serum potassium
Elevated urinary 5-hydroxyindoleacetic acid