Table 3. . Longitudinal follow-up of the patients in the prospective study: DTC status.

Category	Number of patients in each category
DTC status†	No evidence of disease	Biochemical disease only	Residual structural disease	Regression of disease	Stable disease	Progression of disease
Baseline status‡	25	4	9	N/A	N/A	N/A
1-year follow-up	25	2	10	2	9	2
2-year follow-up	27	1	8	3	6	1
3-year follow-up	29	0	7	2	6	1
4-year follow-up	30	0	8	0	5	3
5-year follow-up	6	0	3	0	2	1

^†n = 38 patients for initial status and years 1–4, n = 9 for fifth year of follow-up, may be more than one disease status per patient.

^‡Baseline disease status after initial treatment was assessed based on a combination of surgical pathology, results of postoperative radioiodine scanning and postoperative thyroglobulin measurement at approximately 2 months after surgery.

DTC: Differentiated thyroid cancer.