Table 2.

Cases of spontaneous regression of synovial cysts reported in the literature.

Age/Sex. of Patients	Level	Indications before Reporting Regression	Reference
51 years/female	L4/5	conservative	Nathan J. 2019 [30]
66 years/male	L5/s1	surgery	Priyank Sinhaù 2016 [31]
72 years/male	L4/5	conservative	Pulhorn et al., 2012 [32]
50 years/female	L4/5	surgery	Illerhaus et al. [33]
65 years/male	L4/5	conservative	Ewald et al., 2005 [34]
57 years/ male	L5/s1	surgery	Houten et al., 2003 [18]
58 years/female	L4/5	surgery	Swartz et al., 2003 [35]
15 years/male	L4/5	surgery	Maezawa et al., 2000 [36]
65 years/female	L4/5	surgery	Mercader et al., 1985 [37]