Adenomas can recur, which means you will need treatment again. About 18% of patients with non-functioning adenomas and 25% of those with prolactinomas, the most common type of hormone-releasing adenomas, will need more treatment at some point.

Do adenomas grow?

Adenomas are generally benign or non cancerous but carry the potential to become adenocarcinomas which are malignant or cancerous. As benign growths they can grow in size to press upon the surrounding vital structures and leading to severe consequences.

Do pituitary tumors grow back after surgery?

Despite advances in surgical and radiotherapy techniques, tumor control is not always achieved; thus, data from our centers, as well as from other departments, suggest 5-year regrowth rates of 15% to 66% after surgery alone (6–9) and 2% to 28% after surgery followed by adjuvant radiotherapy (6, 7, 10, 11).