Original Articles
Copyright ©2009 The WJG Press and Baishideng.
World J Gastroenterol. Jun 28, 2009; 15(24): 3003-3008
Published online Jun 28, 2009. doi: 10.3748/wjg.15.3003
Table 3 Pheochromocytoma of the adrenal gland scoring scale (PASS)[22]
FeatureScore if present (No. of points assigned)
Large nests or diffuse growth (> 10% of tumor volume)2
Central (middle of large nests) or confluent tumor necrosis (not degenerative change)2
High cellularity2
Cellular monotony2
Tumor cell spindling (even if focal)2
Mitotic figures > 3/10 HPF2
Atypical mitotic figure(s)2
Extension into adipose tissue2
Vascular invasion1
Capsular invasion1
Profound nuclear pleomorphism1
Nuclear hyperchromasia1
Total20