Adrenal tumors can grow slowly or quickly depending on whether they are cancerous or noncancerous. Cancerous types tend to grow faster than noncancerous types. Approximately 75% of all adrenal tumors ...

Christina Curtis, associate professor of medicine and genetics at Stanford University’s School of Medicine. Credit: courtesy Christina Curtis Despite tremendous scientific advances, there’s still so ...

Plexiform neurofibromas are tumors that grow along nerves. That’s how they get their name: "neuro" means nerves, and "fibroma" is a type of tumor. These growths have nerve tissue and many different ...

What are germ cell and sex cord stromal cells? Germ cells and sex cord stromal cells form when a fetus (baby) is developing. A fetus is made from a sperm cell and an egg cell. Germ cell tumors (GCTs) ...

Pineal region tumors develop in or around the pineal gland, a small, pea-sized organ near the brain’s center. They can be benign or malignant, and they are rare. The pineal gland plays a crucial role ...

Pituitary adenomas are the most common pituitary tumors. They’re usually noncancerous and grow slowly. Some rarer tumors, such as pituitary carcinoma, can spread quickly. Your pituitary gland is a ...