What does an adrenal arteriography primarily investigate?

An adrenal arteriography primarily investigates various adrenal gland conditions, including pheochromocytoma, adrenal adenoma, and adrenal carcinoma, thus making "all of the above" the most comprehensive and accurate choice.

Pheochromocytoma is a tumor of the adrenal medulla that secretes catecholamines, leading to symptoms such as hypertension. An adrenal arteriography can help visualize the blood supply to these tumors, aiding in diagnosis and treatment planning.

Adrenal adenoma refers to benign tumors of the adrenal gland, which may or may not be functional. Arteriography assists in distinguishing the characteristics of these tumors, particularly when evaluating them for surgical intervention or management.

Adrenal carcinoma, a malignant tumor of the adrenal gland, presents a more complex case due to its aggressive nature. Arteriography plays a crucial role in assessing the vascularity of the tumor, which is important for surgical planning and determining the extent of disease.

Since adrenal arteriography can effectively evaluate all these conditions related to the adrenal glands, the option that includes all of them reflects its broad applicability in diagnosing adrenal disorders.