A craniopharyngioma is a slow-growing, non-cancerous tumor that sits near the pituitary gland, right behind the eyes. Because it hugs hormone control centers and the optic nerves, it can quietly cause trouble for years before anyone notices. Watch for these common clues: Vision changesKids or adults may bump into doorframes, miss steps, or complain that the outer part of their sight picture is “missing.” The tumor presses on the nerves that carry images from the eyes to the brain. Delayed or stunted growthChildren may drop off their growth curve even though they eat normally. Adults can notice clothes fitting loosely... Learn more