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Microscopic evaluation at six weeks after treatment in patients treated with single dose ALA-PDT (PDT100; n = 13), fractionated dose ALA-PDT (PDT20+100; n = 12), or APC (n = 14)
| No BO | Residual BO | Sub-squamous BO | |
| PDT100 | 1 | 12 | 0 |
| PDT20+100 | 4 | 7 | 1 |
| APC | 5 | 4* | 5 |
ALA, 5-aminolevulinic acid; APC, argon plasma coagulation; BO, Barrett’s oesophagus; PDT, photodynamic therapy.
*Two of these patients also had sub-squamous BO.
No significant differences between the groups.
