A 34-year-old woman comes to the physician for a 2-hour history of excruciating left flank pain. She had a similar episode 1 year ago. She also reports periodic pounding headaches and palpitations for the past 6 months. Which of the following is most likely contributory to this patient’s headaches?
A) Adrenal cortical hypersecretion
B) Enterochromaffin cell hypersecretion
C) Enterochromaffin-like cell hypersecretion
D) Preganglionic sympathetic acetylcholine release
E) RANK-L-RANK interaction

