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What is Which of the following is TRUE about papillary carcinoma of thyroid? and explain in detail?
Papillary carcinoma thyroid is most common of all thyroid cancers and it comprises about 85% of all thyroid cancers. Amyloid deposition is the feature of medullary carcinoma thyroid, not of papillary carcinoma. Cells in papillary carcinoma thyroid shows Orphan eye nuclei. "Papillary carcinomas are solitary or multifocal lesions. Some tumors may be well circumscribed and even capsulated; other may infiltrate the adjacent parenchyma with ill defined margins". Ref: Robbins 8/e, page 1121.