Table 3. The histopathology of intracranial metastases from differentiated thyroid cancer.

Authors (year of publication)	No. of patients	Included thyroid cancer patients	No. of histopathology
			Papillary	Follicular	Hurthle cell	Poorly differentiated
Biswai et al. (1994) (10)	5	Differentiated	1	4	0	0
Chiu et al. (1997) (11)	47	All	32	0	0	0
Samuel et al. (1997) (12)	15	Well differentiated	4	10	1	0
Salvati et al. (2001) (13)	12	All	3	3	0	0
McWilliams et al. (2003) (14)	16	All	10	2	1	1
Henriques de Figueiredo et al. (2014) (15)	21	Differentiated	12	5	0	4
Choi et al. (2016) (7)	37	Differentiated	32	3	0	2
Saito et al. (2016) (8)	25	Differentiated	18	7	0	0
Slutzky-Shraga et al. (2018) (9)	10	Nonmedullary	3	3	0	4
Gomes-Lima et al. (2018) (16)	24	Differentiated	8	8	1	6
Hong et al. (2018) (17)	16	All	7	4	1	2
Osborne et al. (2019) (4)	79	Differentiated	42	4	3	29
Total (%)	307 (100%)		172 (56.03%)	53 (17.26%)	7 (2.28%)	48 (15.64%)