A major challenge in pituitary tumor diagnosis is that benign and malignant (cancerous) tumors may look similar under a microscope. We categorize pituitary tumors or adenomas based on size and the ...

Pituitary carcinomas can be difficult to diagnose because, under a microscope, they appear the same as pituitary adenomas. Pituitary adenomas are a type of benign tumor of the pituitary gland.

However, they can cause the pituitary gland to over- or under-produce some hormones ... However, even when using a microscope to diagnose pituitary cancer, experts may find it hard to distinguish ...