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The adrenal glands are a pair of glands situated above the kidneys.
Their chief role is the production of specific hormones, which allow the body
to respond to stress, regulate the amount of salt and water in the body, as
well as the development of adult bodily characteristics such as hair growth and
Adrenal nodules occur in 5% of the population. Within this group, most cases are non-cancerous and do not secrete any hormones.
The adrenal gland may need to be removed if:
Adrenal nodules can be evaluated either by a Computed Tomography scan or a Magnetic Resonance Imaging scan. Subsequently, depending on the patient's presentations and scan findings, blood and urine tests may be taken over 24 hours to test for excess amounts of adrenal hormones. Other laboratory studies may be obtained depending on individual patient findings.
If there is evidence of excessive hormone secretion, further evaluation may be required to assess the type of hormone being produced and the source of the excess hormone production.
The treatment of adrenal nodules requires a multidisciplinary approach from different specialty services including the endocrinologist, radiologist and an experienced endocrine surgeon. Malignancy requires surgical intervention whenever possible. Other indications for the removal of the adrenal gland include excessive hormone secretion or a large tumour (more than 4cm in size).
Surgery can be done either via an open method (through a larger incision along the rib cage or the middle of the abdomen) or laparoscopically (three or four tiny incisions each about 1cm in length.) The choice of method depends on a number of factors, which include the size and type of the tumour.
Any operation involves some risk of:
The mortality rate of a laparoscopic adrenalectomy is about 0.3%, compared to an open adrenalectomy which has a mortality rate of 0.9% of cases.