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*Hashimoto's disease may have so many lymphocytes that it mimics a lymph node -- may lead to misdiagnosis of PTC. | *Hashimoto's disease may have so many lymphocytes that it mimics a lymph node -- may lead to misdiagnosis of PTC. | ||
*Parasitic nodule: clump of thyroid that is attached by a thin thread... but looks like a separate nodule; may lead to misdiagnosis of PTC. | *Parasitic nodule: clump of thyroid that is attached by a thin thread... but looks like a separate nodule; may lead to misdiagnosis of PTC. | ||
==Diagnostic keys== | |||
The following should prompt careful examination:<ref>SR. 17 January 2011.</ref> | |||
*Architecture: microfollicular, trabecular, solid, insular. | |||
*Thick capsule. | |||
*Necrosis - rare in the thyroid. | |||
=Parathyroid tissue= | =Parathyroid tissue= |
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