Table 1.

Spot sign score.

Spot sign characteristics	Points
Number of spot signs
1–2	1
≥3	2
Maximal axial dimension
1–4 mm	0
≥5 mm	1
Maximum attenuation
120–179 HU	0
≥180 HU	1

Replicated from Delgado Almandoz et al. (17).