Pituitary adenoma CT: Difference between revisions
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{{CMG}} {{AE}} {{AAM}} | {{CMG}} {{AE}} {{AAM}} | ||
==Overview== | ==Overview== | ||
On head CT scan may be helpful in the diagnosis of pituitary adenoma. Findings on CT scan suggestive of pituitary adenoma include a large [[suprasellar]] mass that invade surrounding structures, [[calcification]], and rarely [[hemorrhage]]. | On head [[Computed tomography|CT scan]] may be helpful in the [[diagnosis]] of pituitary adenoma. Findings on [[Computed tomography|CT scan]] suggestive of pituitary adenoma include a large [[suprasellar]] mass that invade surrounding structures, [[calcification]], and rarely [[hemorrhage]]. | ||
==Key CT Scan Findings in Pituitary Adenoma== | ==Key CT Scan Findings in Pituitary Adenoma== | ||
===Microadenoma=== | ===Microadenoma=== | ||
*Historically, before the advent of MRI, the pituitary was imaged with CT scan. | *Historically, before the advent of [[MRI]], the pituitary was imaged with [[Computed tomography|CT scan]]. | ||
*Although CT scan is able to detect up to 80-90% of microadenomas (5-10mm in size), it has less sensitivity to smaller adenomas (less than 5mm in size).<ref name=radio5>Pituitary Microadenoma. Dr Amir Rezaee and Dr Frank Gaillard. Radiopaedia.org 2015. http://radiopaedia.org/articles/pituitary-microadenoma</ref> | *Although [[CT scan]] is able to detect up to 80-90% of microadenomas (5-10mm in size), it has less sensitivity to smaller adenomas (less than 5mm in size).<ref name="radio5">Pituitary Microadenoma. Dr Amir Rezaee and Dr Frank Gaillard. Radiopaedia.org 2015. http://radiopaedia.org/articles/pituitary-microadenoma</ref> | ||
===Macroadenoma=== | ===Macroadenoma=== | ||
*A large [[suprasellar]] mass that typically characterized by:<ref name=radio>Pituitary Macroadenoma. Dr Bruno Di Muzio and Dr Yuranga Weerakkody. Radiopaedia.org 2015. http://radiopaedia.org/articles/pituitary-macroadenoma-1</ref> | *A large [[suprasellar]] mass that typically characterized by:<ref name="radio">Pituitary Macroadenoma. Dr Bruno Di Muzio and Dr Yuranga Weerakkody. Radiopaedia.org 2015. http://radiopaedia.org/articles/pituitary-macroadenoma-1</ref> | ||
:*An [[attenuation]] similar to that of the brain (30-40 HU) | :*An [[attenuation]] similar to that of the brain (30-40 HU) | ||
:*Moderate [[contrast]] enhancement | :*Moderate [[contrast]] enhancement | ||
Latest revision as of 19:48, 2 October 2019
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Pituitary adenoma Microchapters |
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Case Studies |
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Pituitary adenoma CT On the Web |
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American Roentgen Ray Society Images of Pituitary adenoma CT |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [3] Associate Editor(s)-in-Chief: Ahmad Al Maradni, M.D. [4]
Overview
On head CT scan may be helpful in the diagnosis of pituitary adenoma. Findings on CT scan suggestive of pituitary adenoma include a large suprasellar mass that invade surrounding structures, calcification, and rarely hemorrhage.
Key CT Scan Findings in Pituitary Adenoma
Microadenoma
- Historically, before the advent of MRI, the pituitary was imaged with CT scan.
- Although CT scan is able to detect up to 80-90% of microadenomas (5-10mm in size), it has less sensitivity to smaller adenomas (less than 5mm in size).[1]
Macroadenoma
- A large suprasellar mass that typically characterized by:[2]
- An attenuation similar to that of the brain (30-40 HU)
- Moderate contrast enhancement
- Invasion of the surrounding structures
- Calcification and hemorrhage are rarely seen.
-
![Large hyperdense sellar mass extending into the suprasellar region and causing displacement of surrounding structures. [3]](/images/b/b7/Pituitary_adenoma.jpg)
Large hyperdense sellar mass extending into the suprasellar region and causing displacement of surrounding structures. [3] -
![Large hyperdense sellar mass extending into the suprasellar region and causing displacement of surrounding structures. [3]](/images/8/87/Pituitary_adenoma.1.jpg)
Large hyperdense sellar mass extending into the suprasellar region and causing displacement of surrounding structures. [3] -
![There is a well defined round isodense lesion noted in the pituitary fossa, the lesion is widening the sella.[4]](/images/6/6e/Pituitary-macroadenoma-CT-01.jpg)
There is a well defined round isodense lesion noted in the pituitary fossa, the lesion is widening the sella.[4] -
![There is a well defined round isodense lesion noted in the pituitary fossa, the lesion is widening the [4]](/images/8/86/Pituitary-macroadenoma-CT-02.jpg)
There is a well defined round isodense lesion noted in the pituitary fossa, the lesion is widening the [4]
![Large hyperdense sellar mass extending into the suprasellar region and causing displacement of surrounding structures. [3]](/index.php/File:Pituitary_adenoma.jpg)
![Large hyperdense sellar mass extending into the suprasellar region and causing displacement of surrounding structures. [3]](/index.php/File:Pituitary_adenoma.1.jpg)
![There is a well defined round isodense lesion noted in the pituitary fossa, the lesion is widening the sella.[4]](/index.php/File:Pituitary-macroadenoma-CT-01.jpg)
![There is a well defined round isodense lesion noted in the pituitary fossa, the lesion is widening the [4]](/index.php/File:Pituitary-macroadenoma-CT-02.jpg)
References
- ↑ Pituitary Microadenoma. Dr Amir Rezaee and Dr Frank Gaillard. Radiopaedia.org 2015. http://radiopaedia.org/articles/pituitary-microadenoma
- ↑ Pituitary Macroadenoma. Dr Bruno Di Muzio and Dr Yuranga Weerakkody. Radiopaedia.org 2015. http://radiopaedia.org/articles/pituitary-macroadenoma-1
- ↑ 3.0 3.1 Image courtesy of Dr. Gagandeep Choudhary. Radiopaedia (original file here). Creative Commons BY-SA-NC
- ↑ 4.0 4.1 Case contributed by Radswiki. [1] (original file [2]).