Types segmentation differentiates appendix cancer by histology, each dictating a discrete treatment algorithm and market value. Mucinous adenocarcinoma represents the largest revenue pocket (≈ 42 %), requiring CRS-HIPEC procedures plus adjuvant FOLFOX, thereby anchoring device and drug spend. Goblet-cell adenocarcinoid, intermediate in behaviour, generates 28 % of spend; here, somatostatin-analogue and targeted therapies command premium pricing despite a smaller patient pool. Colonic-type adenocarcinoma, treated similarly to right-sided colon cancers, contributes 20 %, whereas the remaining 10 % aggregates signet-ring and mixed subtypes that rely on experimental regimens, influencing early-access program revenues.