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HomePASS Score (Pheochromocytoma)
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PASS Score (Pheochromocytoma)

Clinical Context & Background

The PASS score is used to separate benign from malignant pheochromocytomas based on histological features. While no single feature guarantees malignancy, a high PASS score correlates with more aggressive biological behavior.
Primary Source EvidenceThompson LD. Pheochromocytoma of the Adrenal gland Scaled Score (PASS) to separate benign from malignant neoplasms. Am J Surg Pathol. 2002;26(5):551-566.
Formula Logic
Sum of weighted points for 12 features.

Reference Data

PASS ScoreBiological Potential
< 4Likely Benign
≥ 4Potentially Malignant / Aggressive

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