Cushing syndrome due to adrenal tumor is an endocrine system
disorder. It occurs when a tumor of the adrenal gland releases
excess amounts of the hormone cortisol. Cushing syndrome is
caused by constant, high levels of the steroid hormone cortisol.
A tumor on one of the adrenal glands causes about 15% of all
cases of Cushing syndrome. Adrenal tumors release cortisol.
Adrenal tumors may be noncancerous (benign) or cancerous
(malignant). Noncancerous tumors that may cause Cushing syndrome
include: Cancerous tumors that may cause Cushing syndrome
include: Adrenal tumors are rare. In children with high cortisol
levels, adrenal tumors are more common than pituitary tumors or
ectopic ACTH secretion. In adults, adrenal tumors are less
likely to be the cause of high cortisol levels. Pituitary tumors
(Cushing's disease) are more often seen in adults. Adrenal
tumors are found in women more often than in men. Symptoms
usually include: Skin changes that are often seen: Muscle and
bone changes include: Women often have: M