Surgical Pathology Criteria

Appendiceal Mucinous Neoplasm with Low Risk of Recurrence

Differential Diagnosis

Appendiceal Mucinous Neoplasms

Mucinous Adenoma/Cystadenoma Mucinous Low Risk of Recurrence Mucinous High Risk of Recurrence Mucinous Adenocarcinoma
No extra-appendiceal mucin No epithelium in extra-appendix mucin Epithelium present in extra-appendiceal mucin Epithelium may be present in extra-appendiceal mucin
Non-invasive epithelium may be present in intramural mucin Non-invasive epithelium may be present in intramural mucin Non-invasive epithelium may be present in intra and extramural mucin Invasion by jagged neoplastic glands
Margin of resection must be clear Margin may be involved Margin may be involved Margin may be involved
Benign, no recurrences Very few recur, 0% mortality Frequently recur, 50% 5 year, 20% 10 year survival <10% 10 yr survival

Stanford Medicine Resources:

Footer Links: