**6.6 Hematogenous spread**

Hematogenous spread is typical of large masses but is also seen with carcinomas.


Sentinel lymph node:

Definition: A "sentinel lymph node" is the first regional lymph node that reaches lymph flow from a primary tumor.

	- 1.Lymphangitis.
	- 2.Radiation.
	- 3. Surgical intervention.
	- 4.Developmental anomalies.
