They often manifest clinically and therefore do not require presumptive screening. CT scan is preferred because it is more cost-effective than MRI to delineate size, shape, and location. However, MRI is indicated when pheochromocytoma is suspected. Plain radiographs, tomograms, and ultrasound are less sensitive and used less frequently since the advent of CT scans and MRIs. Myelolipomas show characteristic images of fat.
Hemorrhage shows characteristic images of blood.
Clinical symptoms include flank pain, nausea and vomiting, fever, and hypotension. Diagnosis can be made with a rapid ACTH stimulation test demonstrating decreased cortisol reserve. They should be recognized early. Fungal or tuberculosis infections Granulomatous diseases such as histoplasmosis and tuberculosis are characteristically homogeneous and may show calcifications. Most metastatic disease to the adrenal gland is unilateral, but lymphoma may be bilateral and can cause adrenal insufficiency.