Table 2.

Classification of appendiceal mucinous neoplasms and pseudomyxoma peritonei [6]

	Ronnett et al. [3]	AJCC and WHO [6]
Tumor confined to appendix
Limited to mucosa	NA	Adenoma
Low-grade/high-grade cytology	NA	Adenoma
Positive surgical margin	NA	Adenoma
Neoplastic epithelium in appendix wall	NA	Invasive Mucinous Adenocarcinoma
Tumor beyond appendix
Low-grade epithelium in peritoneal mucin	Disseminated peritoneal adenomucinosis (DPAM)	Low-grade mucinous adenocarcinoma
High-grade epithelium in peritoneal mucin	Peritoneal mucinous carcinomatosis (PMCA)	High-grade mucinous adenocarcinoma