Pituitary adenoma CT: Difference between revisions
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===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 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= | *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=radio1>Pituitary Microadenoma. Dr Amir Rezaee and Dr Frank Gaillard. Radiopaedia.org 2015. http://radiopaedia.org/articles/pituitary-microadenoma</ref> | ||
==References== | ==References== | ||
Revision as of 19:12, 2 October 2015
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Pituitary adenoma Microchapters |
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Diagnosis |
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Treatment |
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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
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
Macroadenoma
- A large suprasellar mass that typically characterized by:[1]
- 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.
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![Large hyperdense sellar mass extending into the suprasellar region and causing displacement of surrounding structures. [2]](/images/b/b7/Pituitary_adenoma.jpg)
Large hyperdense sellar mass extending into the suprasellar region and causing displacement of surrounding structures. [2]
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![Large hyperdense sellar mass extending into the suprasellar region and causing displacement of surrounding structures. [2]](/images/8/87/Pituitary_adenoma.1.jpg)
Large hyperdense sellar mass extending into the suprasellar region and causing displacement of surrounding structures. [2]
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![There is a well defined round isodense lesion noted in the pituitary fossa, the lesion is widening the sella.[3]](/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.[3]
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![There is a well defined round isodense lesion noted in the pituitary fossa, the lesion is widening the [3]](/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 [3]
![Large hyperdense sellar mass extending into the suprasellar region and causing displacement of surrounding structures. [2]](/index.php/File:Pituitary_adenoma.jpg)
![Large hyperdense sellar mass extending into the suprasellar region and causing displacement of surrounding structures. [2]](/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.[3]](/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 [3]](/index.php/File:Pituitary-macroadenoma-CT-02.jpg)
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).[2]
References
- ↑ Pituitary Macroadenoma. Dr Bruno Di Muzio and Dr Yuranga Weerakkody. Radiopaedia.org 2015. http://radiopaedia.org/articles/pituitary-macroadenoma-1
- ↑ 2.0 2.1 2.2 Image courtesy of Dr. Gagandeep Choudhary. Radiopaedia (original file here). Creative Commons BY-SA-NC
- ↑ 3.0 3.1 Case contributed by Radswiki. [1] (original file [2]).