Table 2.

Pheochromocytoma of the adrenal gland scaled score (PASS). Abbreviations: HPF, high-power field.

Parameters	Score
Large nests or diffuse growth (>10% of tumor volume)	2
Central of confluent tumor necrosis	2
High cellularity	2
Cellular monotony	2
Tumor cell spindling	2
Mitotic figures > 3/10 HPF	2
Atypical mitotic figure(s)	2
Extension into adipose tissue	2
Vascular invasion	1
Capsular invasion	1
Profound nuclear pleomorphism	1
Nuclear hyperchromasia	1
Total maximum	20