NEUROENDROCRINE DUO/AMP/JEJ/IL (58)    AJCC STAGING GROUPS (164.33)

• T-CODE:   X

Primary Tumor (T)
     without penetration of overlying serosa (jejunal or ileal tumors) or
     invades pancreas or retroperitoneum (ampullary or duodenal tumors )
     or into nonperitonealized tissues.
T4  Tumor invades visceral peritoneum (serosa) or invades other organs
 
TX  Primary tumor cannot be assessed
T0  No evidence of primary tumor
T1  Tumor invades lamina propria or submucosa and size < or = 1 cm (small
     intestinal tumors); tumor < or = 1 cm (ampullary tumors)
T2  Tumor invades muscularis propria or size >1 cm (small intestinal
     tumors); tumor >1 cm (ampullary tumors)
T3  Tumor invades through the muscularis propria into subserosal tissue 

• N-CODE:   X

Regional Lymph Nodes (N)
 
NX  Regional lymph nodes cannot be assessed
N0  No regional lymph node metastasis
N1  Regional lymph node metastasis

Distant Metastasis (M)
 
M0  No distant metastasis
M1  Distant metastasis