Tumor Growth Pattern
Notes
**Note 1:** Physician statement of tumor growth pattern can be used to code this data item when no other information is available. **Note 2:** Cholangiocarcinoma may be classified by growth pattern. The tumor growth patterns of intrahepatic cholangiocarcinoma include the mass forming type, the periductal infiltrating type, and a mixed type. The periductal infiltrating type of cholangiocarcinoma demonstrates a diffuse longitudinal growth pattern along the bile duct. Limited analyses suggest that the diffuse periductal infiltrating type is associated with a poor prognosis. **Note 3:** Record the presence or absence of an infiltrating periductal component. This information may be obtained from radiology, surgery, or pathology reports.| Code | Description |
|---|---|
| 1 | Mass-forming |
| 2 | Periductal infiltrating |
| 3 | Mixed mass-forming and periductal infiltrating |
| 8 | Not applicable: Information not collected for this case (If this information is required by your standard setter, use of code 8 may result in an edit error.) |
| 9 | Not documented in medical record Radiology and/or pathology report does not mention tumor growth pattern Cannot be determined by the pathologist Tumor growth pattern not assessed or unknown if assessed |