18. Thy Classification Classification Histology Action Thy 1 Non-diagnostic Repeat FNAC (Unless cyst aspirated to dryness) Thy 2 Non-neoplastic Two non-neoplastic results 3-6/12 apart advised Thy 3 (i) Follicular lesion / suspected neoplasm Some cases will be hyperplastic nodules Surgical removal of the lobe. Completion thyroidectomy may be necessary if histology malignant Thy 3 (ii) Worrying features but cells too scanty to qualify for Thy 4 Discuss in MDT Repeat FNAC advised Thy 4 Suspicious of malignancy but not diagnostic Surgical intervention advised Thy 5 Diagnostic of malignancy Surgical intervention Consider radioT, chemoT
22. Papillary or Follicular Ca staging < 45 years > 45 years Stage I Any T, N & M0 pT1, N0, M0 Stage II Any T, N & M1 pT2, N0, M0 pT3, N0, M0 Stage III pT4, N0, M0 Any pT, N1, M0 Stage IV Any pT, N, M1 Undifferentiated or anaplastic carcinomas are ALL stage IV
23. 10 year mortality rate for DTC Stage 10 yr mortality (%) I 1.7 II 15.8 III 30 IV 60.9