Difference between revisions of "Follicular thyroid carcinoma"
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'''Follicular thyroid carcinoma''', abbreviated '''FTC''', is an uncommon malignancy of the [[thyroid gland]]. It is also known as ''follicular carcinoma''. | '''Follicular thyroid carcinoma''', abbreviated '''FTC''', is an uncommon malignancy of the [[thyroid gland]]. It is also known as ''follicular carcinoma''. | ||
==General== | ==General== | ||
*Usually spread by the hematologic route. | |||
**PTC usually spreads via lymphatics. | |||
===Clinical=== | ===Clinical=== | ||
Medical school memory device ''4 Fs'': | Medical school memory device ''4 Fs'': | ||
| Line 7: | Line 10: | ||
*Female predominant. | *Female predominant. | ||
*Favourable prognosis. | *Favourable prognosis. | ||
==Microscopic== | ==Microscopic== | ||
Revision as of 03:33, 4 March 2015
Follicular thyroid carcinoma, abbreviated FTC, is an uncommon malignancy of the thyroid gland. It is also known as follicular carcinoma.
General
- Usually spread by the hematologic route.
- PTC usually spreads via lymphatics.
Clinical
Medical school memory device 4 Fs:
- FNA NOT diagnosable.
- Far away mets (sometimes).
- Female predominant.
- Favourable prognosis.
Microscopic
Features:
- Defined by either:
- Invasion through the capsule:
- Should be all the way through.[1]
- 1/2 does not count.
- Fibrous reaction does not count.
- "Above the contour" does not count.
- Should be all the way through.[1]
- Vascular invasion (all of the following):
- In a small vein (not a capillary), that is outside of the tumour mass.
- Tumour adherent to the side of the vessel.
- Tumour must be re-endothelialized.
- Invasion through the capsule:
Notes:
- Impossible to differentiate from follicular adenoma on FNA (no cytologic differences).
- Described as "over-diagnosed" ... misdiagnoses: PTC follicular variant, follicular adenoma, multinodular goitre with a thick capsule.
Images
www:
See also
References
- ↑ SR. 17 January 2011.