Retrospective Study of Adrenal Pheochromocytoma

This retrospective study was approved by the local ethics committee. Between February 2013 and February 2020, we retrospectively retrieved all patients that were operated on for adrenalectomy and received a definitive diagnosis upon histopathological examination of PCCs at the University of Padova. Recruited patients had to present the following criteria: (1) be evaluated at our third-level referral hospital and have undergone adrenal contrast-enhanced CT, including unenhanced and contrast-enhanced scans, with at least 5 mm slice thickness for unenhanced scan and 3 mm slice thickness for arterial and venous phases scans; (2) have a complete panel of hormonal secretion; (3) have received a histopathologically confirmed diagnosis of PCC after adrenalectomy and, if possible, the evaluation of the PASS [8 (link)]. The only exclusion criteria were (1) poor-quality CT images and (2) motion or breathing artifacts.