Table 1.

Case descriptions and results.

Case N°	Description	Electrodes	Results
1	M 75 years old with major response was treated with ECT 12 weeks after chemo-radiation therapy	Expandable STINGER electrodes	The parietal thickening of the rectum was substantially stable. The lesion still appears in stable disease nine months after ECT. Pain reduction was obtained according to the VAS scale from 2 to 0.
2	M 66 years old with major response was treated with ECT 12 weeks after chemo-radiation therapy	Expandable STINGER electrodes	CT showed a slight residual thickening of the rectal walls on the side apparently of fibrotic content. The patient reported pain reduction according to the VAS scale from 3 to 0.
3	Male 50 years old with recurrence after long course neoadjuvant therapy and total mesorectal excision (TME) treated with ECT	Variable and fixed geometry electrodes	MRI 6 months after ECT treatment showed no significant morphostructural changes in the lesion that was considered to be stable disease. Patient reported a reduction in pain on the VAS 7 to 4 scale and a reduction in bleeding.