Table 2.

Data items collected by basic pediatric-DTC registry.

1. Patient details	2. Preoperative	3. Surgical treatment	4. Postoperative	5. (131I) therapy	6. Outcome
Patient ID	Presence of comorbidities	Surgeon (pediatric/ adult/ endocrine/ combination)	TNM staging	Indication	Serum Tg antibodies
Sex	Family history of DTC	Procedure type	Histology (PA)	Number of 131I treatments	Maximum stimulated Tg
Date of enrollment	Typical manifestations of familial syndromes	Indication for procedure	Genetic testing results	Cumulative activity of 131I	Death of disease
Country/hospital	Previous exposure to radiation	Lymph node dissection (levels)	Transient hypoparathyroidism	Distant metastases	Death of any cause
Age at diagnosis	Previous malignancy	Lymph node dissection intent	Transient recurrent nerve injury	Distant metastasis sites	Date of death
Date of diagnosis	Previous thyroid surgery		Other adverse events/surgical complications	Other adjuvant therapy (i.e. radiotherapy or TKI)	Date of last known alive
	Clinical symptoms				Recurrence
	Dominant finding at physical exam				Persistent disease
	Thyroid function at diagnosis				Remission
	Preoperative imaging results				Persistent hypoparathyroidism
	Results of fine needle aspiration (Bethesda classification)				Persistent recurrent nerve injury
	Clinical voice abnormality				Dry mouth/hyposalivation
	Preoperative laryngeal exam				Second primary malignancies
	Weight SDS				Infertility
	Height SDS				Other adverse events
	Calculated BMI SDS

BMI, body mass index; DTC, differentiated thyroid carcinoma; PA, pathology; SDS, standard deviation scores; Tg, thyroglobulin; TKI, tyrosine kinase inhibitor; TNM, tumor, node, metastases.