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Nelson syndrome (medical condition): The rapid growth of a pituitary adenoma (tumor) after the surgical...more »
Nelson syndrome: A syndrome characterized by HYPERPIGMENTATION, enlarging pituitary mass, visual defects secondary to compression of the OPTIC CHIASM, and elevated serum ACTH. It is caused by the expansion of an underlying ACTH-SECRETING PITUITARY ADENOMA that grows in the absence of feedback inhibition by adrenal CORTICOSTEROIDS, usually after ADRENALECTOMY.
Source: MeSH 2007
These medical condition or symptom topics may be relevant to medical information for Nelson syndrome:
Nelson syndrome is listed as a "rare disease" by the Office of
Rare Diseases (ORD) of the National Institutes of Health
(NIH). This means that Nelson syndrome, or a subtype of Nelson syndrome,
affects less than 200,000 people in the US population.
Source - National Institutes of Health (NIH)
Nelson syndrome: Nelson syndrome is listed as a type of (or associated with) the following medical conditions in our database:
Source - NIH
Source - MeSH 2007
The following list attempts to classify Nelson syndrome into categories where each line is subset of the next.
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