DATA FORM FOR CANCER CLASSIFICATION - COLON AND RECTUM
| HISTOPATHOLOGIC TYPE | HISTOPATHOLOGIC GRADE | |||
| Adenocarcinoma in situ | GX: | Grade cannot be assessed | ||
| Adenocarcinoma | G1: | Well differentiated | ||
| Mucinous adenocarcinoma (colloid type; greater than 50% mucinous carcinoma) | G2: | Moderately differentiated | ||
| Signet ring cell carcinomao (greater than 50% signet ring cell) | G3: | Poorly differentiated | ||
| Squamous cell (epidermoid) carcinoma | G4: | Undifferentiated | ||
| Adenosquamous carcinoma | ||||
| Small cell (oat cell) carcinoma | ||||
| Undifferentiated carcinoma | ||||
| Carcinoma, NOS | ||||
| HISTOPATHOLOGIC TYPE | HISTOPATHOLOGIC GRADE | |||
| Sarcoma | Not applicable | |||
| Lymphoma | ||||
| Carcinoid tumor | ||||
| Comments: |