Which type of tumors are often benign and do not spread?

Benign tumors are characterized by their non-cancerous nature, which means they typically grow slowly, do not invade surrounding tissues, and do not spread to other parts of the body. This limited growth pattern differentiates them from malignant tumors, which are cancerous and can invade nearby tissues and metastasize, or spread, to other organs through the bloodstream or lymphatic system.

Benign tumors can often be encapsulated, allowing them to be surgically removed with little risk of recurrence. Their presence may still cause health issues depending on their location and size, but they are generally considered less dangerous than their malignant counterparts. In contrast, carcinomas refer specifically to malignant tumors that arise from epithelial tissue, and metastatic tumors exist as a result of cancer cells spreading from a primary site to form new tumors elsewhere in the body.