Figure 3.

(A) Microscopic view upon durotomy. The dosrsal subarachnoid subarachnoid hygroma (SSSH) is below the arachnoid layer indicated. (B) After wide fenestration of the arachnoid layer. Noted residual thin xanthrochromic semi-organized haematoma after drainage of subarachnoid hygroma. Nerve roots were protected under the cottonoid. The semi-organized haematoma was evacuated. (C) Post wide fenestration of the arachnoid layers and drainage of the hygromas. Cauda equina nerve roots were adequately decompressed.