A lens-shaped intrusive igneous mass close to the surface is called a laccolith.

Here's why:

* Laccolith: This term specifically describes a dome-shaped intrusion that pushes overlying rock layers upwards, creating a lens-like shape. They are relatively shallow, often found near the surface.

Other intrusive igneous bodies, while they can sometimes have a lens-like shape, are not the same as a laccolith:

* Sill: A tabular intrusion that intrudes parallel to existing layers.

* Dyke: A tabular intrusion that cuts across existing layers.

* Batholith: A massive, irregular-shaped intrusion that extends deep into the crust.

Let me know if you have any other geology questions!