Acromegaly diagnosis: Difference between revisions
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==Diagnosis== | ==Diagnosis== | ||
If acromegaly is suspected, [[medical imaging]] and [[medical laboratory]] investigations are generally used together to confirm or rule out the presence of this condition. | If acromegaly is suspected, [[medical imaging]] and [[medical laboratory]] investigations are generally used together to confirm or rule out the presence of this condition. | ||
===Hormonal=== | |||
IGF1 provides the most sensitive and useful lab test for the diagnosis of acromegaly. A single value of the Growth hormone (GH) is not useful in view of its pulsatality (levels in the blood vary greatly even in healthy individuals). GH levels taken 2 hours after a 75 or 100 gram [[glucose tolerance test]] are helpful in the diagnosis: GH levels are suppressed below 1 μg/L in normal people, and levels higher than this cutoff are confirmatory of acromegaly. | |||
Other pituitary hormones have to be assessed to address the secretory effects of the tumour as well as the mass effect of the tumor on the normal pituitary gland. They include [[thyroid stimulating hormone|TSH]] (thyroid stimulating hormone),[[gonadotrophin|gonadotropic hormones]] (FSH,LH), [[Adrenocorticotropic hormone|ACTH]] (adrenocorticotropic hormone), [[prolactin]]. | |||
==References== | ==References== | ||
Revision as of 15:57, 18 January 2012
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Acromegaly Microchapters |
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Acromegaly diagnosis On the Web |
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American Roentgen Ray Society Images of Acromegaly diagnosis |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Diagnosis
If acromegaly is suspected, medical imaging and medical laboratory investigations are generally used together to confirm or rule out the presence of this condition.
Hormonal
IGF1 provides the most sensitive and useful lab test for the diagnosis of acromegaly. A single value of the Growth hormone (GH) is not useful in view of its pulsatality (levels in the blood vary greatly even in healthy individuals). GH levels taken 2 hours after a 75 or 100 gram glucose tolerance test are helpful in the diagnosis: GH levels are suppressed below 1 μg/L in normal people, and levels higher than this cutoff are confirmatory of acromegaly.
Other pituitary hormones have to be assessed to address the secretory effects of the tumour as well as the mass effect of the tumor on the normal pituitary gland. They include TSH (thyroid stimulating hormone),gonadotropic hormones (FSH,LH), ACTH (adrenocorticotropic hormone), prolactin.
References
bg:Акромегалия cs:Akromegalie de:Akromegalie gl:Acromegalia it:Acromegalia he:אקרומגליה nl:Acromegalie no:Akromegali sq:Akromegalia sk:Akromegália sr:Акромегалија fi:Akromegalia sv:Akromegali uk:Акромегалія