Poorly differentiated regions were defined strictly as those with no glandular structure. Grade categories were based on the total area of poorly differentiated cells, as viewed under a microscope ...

The incidence of lymph node metastasis was significantly higher in lesions featuring poorly differentiated/mucinous adenocarcinoma, submucosal invasion ≥ 1800 μm, vascular invasion, and high ...

These cancers can spread (metastasizes) to the neck lymph nodes, lungs, and bones. Poorly differentiated and well-differentiated thyroid cancers can be present at the same time. Hurthle cell thyroid ...