This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thyroid Malignancies, Subject name: Surgery
Least malignant thyroid cancer is: 
Select and explain. 
A. Papillary carcinoma, B. Follicular carcinoma, C. Medullary carcinoma, D. Anaplastic carcinoma
A: Papillary carcinoma
Answer: A: Papillary carcinoma 
Explanation: Ans is 'a' i.e. Papillary Cancer Important points about thyroid malignancy :Least MalignantPapillary CaMost MalignantAnaplastic CaMC type of thyroid cancer after radiationPapillary Ca*Latent period for radiation induced thyroid CaAbout 30 yrs*Type of thyroid cancer assoc with MEN syndromeMedullary Ca*Thyroid Ca assoc with amyloidosisMedullary Ca*Thyroid Ca assoc with dystrophic calcificationPapillary*Psammoma bodies are seen inPapillary Ca*Orphan Annie-eyed nuclei are seen inPapillary Ca*Thyroid cancer occurring in longstanding multinodular goitreFollicular Ca*Carcinoma derived from the C cells of thyroidMedullary*