Pathology Which of the following features is NOT seen in papillary carcinoma thyroid? A Papillary structure usually complex with a fibrovascular core B Optically clear nuclei with nuclear overlapping C Nuclear pseudoinclusions and nuclear grooves D Tumor cell immunopositivity for calcitonin 💡 Explanation Which of the following features is NOT seen in papillary carcinoma thyroid? ✓ Correct Answer: D. Tumor cell immunopositivity for calcitonin