Pheochromocytoma of the Adrenal gland Scaled Score (PASS) to separate benign from malignant neoplasms: a clinicopathologic and immunophenotypic study of 100 cases.
Thompson LD.
Am J Surg Pathol. 2002 May;26(5):551-66. doi: 10.1097/00000478-200205000-00002.