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. Author manuscript; available in PMC: 2012 Jun 1.
Published in final edited form as: Endocrinol Metab Clin North Am. 2011 Jun;40(2):295–311. doi: 10.1016/j.ecl.2011.02.002

Figure 1.

Figure 1

Diagram illustrating biosynthesis of the three major catecholamines that are secreted by pheochromocytomas. DOPA, dihydroxyphenylalanine; PNMT, phenylethanolamine-N-methyl transferase. Data from Eisenhofer G, Lenders JWM, Pacak K. Biochemical Diagnosis of Pheochromocytoma. In: Lehnert H, ed. Pheochromocytoma. Pathophysiology and Clinical Management. Front Horm Res. Vol 31. Basel: Karger; 2004:76-106.