What is a pheochromocytoma? do they occur at anatomic sites other than the adrenal gland?

1)
Pheochromocytoma is a rare tumor, usually noncancerous (benign) that develops in adrenal gland's medulla. It can affect both or only one adrenal gland. The tumor cells will release hormones that will cause high blood pressure causing damage to the cardiovascular system.

2) Pheochromocytoma is mostly on the medulla f the adrenal gland but can have other locations. Extra-adrenal pheochromocytomas can appear in the abdomen, torax, within the urinary bladder and neck usually in association with the sympathetic ganglia

Ineed more info for this, i don’t quite understand what you’re asking.

The return of the wolf to yellowstone national park will probably affect the bird population to some degree, not significantly. while wolves will hunt birds when necessary, they prefer to hunt larger prey. the bird population will most likely only be affected when hunting is scarce for the wolves. birds of prey will also probably not be affected as much as other birds who spend more time on the ground hunting for food as the tend to spend more time in the air or in trees since they do not need to stay on the ground for long due to the nature of the way they hunt.