Sessile means "having a broad base".
This tumor is attached to the ear by a broad base - so we can say it is sessile. Compare this image to pedunculated, in which the mass is attached by a stem or peduncle.
So the point here is that it is important not only to describe the tumor itself (in this case: red, ovoid, smooth) but also to describe its attachment to the tissue (in this case: sessile). |
Click on the image to see a 38K enlargement.