Characteristics of Included Studies
| Study | Country | Design | Patients (n) | Selection criteria |
| Randolph (2002) | United States | Retrospective | 50 | Thyroid cancer confirmed after lobectomy; no distant metastases |
| Hoyes (2004) | United Kingdom | Retrospective | 60 | Thyroid cancer confirmed after lobectomy; no distant metastases |
| Bal (2006) | India | Prospective | 85 | DTC confirmed after lobectomy, limited to thyroid gland; negative neck ultrasound |
| Santra (2011) | India | Retrospective | 364 | Thyroid cancer confirmed after lobectomy, limited to thyroid gland; negative neck ultrasound |
| Giovanella (2013) | Switzerland | Randomized and prospective | 136 | Unifocal DTC confirmed after lobectomy, limited to thyroid gland; negative neck ultrasound |