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===Microscopic=== | ===Microscopic=== | ||
Features: | Features:<ref name=Ref_WMSP74>{{Ref WMSP|74}} <!-- Mike S. --></ref> | ||
*Architecture: often small nests, may be targetoid. | |||
**Classically has whorling with '''eye-of-storm''' & '''single file'''. | |||
*Cytologically monotonous (uniform) with variable architecture - '''key feature'''. | *Cytologically monotonous (uniform) with variable architecture - '''key feature'''. | ||
** | **Nucleus: ovoid & small, small nucleoli, powdery chromatin. | ||
* | ***'''[[Papillary thyroid carcinoma]]-like appearance'''. | ||
**Cytoplasm: eosinophilic. | |||
*Indistinct cell borders. | *Indistinct cell borders. | ||
DDx: | DDx: |
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