Pituitary adenoma CT: Difference between revisions
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==Key CT Scan Findings in Pituitary Adenoma== | ==Key CT Scan Findings in Pituitary Adenoma== | ||
===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><ref name=Radio>age courtesy of Dr Gagandeep Choudhary. http://www.radiopaedia.org Radiopaedia (http://radiopaedia.org/cases/pituitary-macroadenoma). http://radiopaedia.org/licence Creative Commons BY-SA-NC.</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 | ||
:*Invasion of the surrounding structures | :*Invasion of the surrounding structures | ||
*Calcification and hemorrhage are rarely seen. | *Calcification and hemorrhage are rarely seen. | ||
<gallery> | <gallery> | ||
Image: | Image: | ||
Revision as of 20:43, 29 September 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. [1] Associate Editor(s)-in-Chief: Ahmad Al Maradni, M.D. [2]
Overview
Key CT Scan Findings in Pituitary Adenoma
Macroadenoma
- A large suprasellar mass that typically characterized by:[1][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.
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Large hyperdense sellar mass extending into the suprasellar region and causing displacement of surrounding structures. Image courtesy of Dr Gagandeep Choudhary. http://www.radiopaedia.org Radiopaedia (http://radiopaedia.org/cases/pituitary-macroadenoma). http://radiopaedia.org/licence Creative Commons BY-SA-NC.
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Large hyperdense sellar mass extending into the suprasellar region and causing displacement of surrounding structures. Image courtesy of Dr Gagandeep Choudhary. http://www.radiopaedia.org Radiopaedia (http://radiopaedia.org/cases/pituitary-macroadenoma). http://radiopaedia.org/licence Creative Commons BY-SA-NC.
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There is a well defined round isodense lesion noted in the pituitary fossa, the lesion is widening the sella.http://www.radiopaedia.org Radiopaedia (http://radiopaedia.org/cases/pituitary-adenoma).
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There is a well defined round isodense lesion noted in the pituitary fossa, the lesion is widening the sella.http://www.radiopaedia.org Radiopaedia (http://radiopaedia.org/cases/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]
References
- ↑ 1.0 1.1 Pituitary Macroadenoma. Dr Bruno Di Muzio and Dr Yuranga Weerakkody. Radiopaedia.org 2015. http://radiopaedia.org/articles/pituitary-macroadenoma-1
- ↑ age courtesy of Dr Gagandeep Choudhary. http://www.radiopaedia.org Radiopaedia (http://radiopaedia.org/cases/pituitary-macroadenoma). http://radiopaedia.org/licence Creative Commons BY-SA-NC.