“…Of the 17 cases described, 14 underwent surgical treatment consisting of emptying of the cyst and marsupialization, [5][6][7][8][9][10][11][12] because they presented progressively worsening or, in any case, invalidating symptoms: regression of clinical symptoms was achieved in six of these cases 1,5,7,8,10,12 and marked clinical improvement in six. 7,11,12 Postoperative control MRI was performed in seven cases 1,6,[8][9][10] and documented complete obliteration of the cystic dilatation in one case, 8 partial obliteration in four 1,9,10 and no change in the last one. 6 In the other four cases, 2,6,13 a conservative policy was adopted, with clinical and radiological follow-up (lasting over 6 years in Celli et al's report) because both the clinical and neuroradiological situation remained more or less stable.…”