Normotensive incidentally discovered pheochromocytomas display specific biochemical, cellular, and molecular characteristics.

Context: A number of incidentally discovered pheochromocytomas are not associated with hypertension. The characteristics of normotensive incidentally discovered pheochromocytomas (NIPs) are poorly known.

Objective: The purpose of this work was to assess the clinical, hormonal, histological, and molecular features of NIPs.