They can feel tender to the touch and can move around under the skin. Tumors can be either benign or malignant and are often made up of a solid area of tissue. They typically feel firm and hard.

Focal nodular hyperplasia has no malignant potential and ... then pathologists must distinguish these tumors from adenocarcinoma metastases. Male sex and benign liver tumor: an a priori suspicious ...

The taller-than-wide thyroid nodule feature did not demonstrate sufficient power to differentiate between malignant and benign nodules.