Figure 4From: Diverse arachnoid cyst morphology indicates different pathophysiological originsAberrant-type cyst. SEM micrographs of cyst with uniform appearance at both luminal (a) and dural surfaces (b). Luminal surface with dense distribution of short microvilli (see insert; bar 1 μm). The dural-aspect cells appear to be arranged in a tile-like manner and carry few microvilli.Back to article page