Squamous overgrowth is not a safety concern for photodynamic therapy for Barrett's esophagus with high-grade dysplasia.
Bronner MP, Overholt BF, Taylor SL, Haggitt RC, Wang KK, Burdick JS, Lightdale CJ, Kimmey M, Nava HR, Sivak MV, Nishioka N, Barr H, Canto MI, Marcon N, Pedrosa M, Grace M, Depot M; International Photodynamic Therapy Group for High-Grade Dysplasia in Barrett's Esophagus.
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PMID: 18996379
Clinical Trial.