Document Detail


Review article: the potential role for photodynamic therapy in the management of upper gastrointestinal disease.
MedLine Citation:
PMID:  11207506     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Photodynamic therapy involves the activation of an exogenously administered, or an endogenously generated, photosensitizer with light to produce localized tissue destruction. It is an attractive, predominantly endoscopic technique for the palliation of advanced upper gastrointestinal cancer and the eradication of early neoplastic and pre-neoplastic lesions. The nature of the biological response allowing safe healing and the exploitation of tissue threshold effects mean that adjacent tissue damage can be minimized. This review used a database of 368 papers. The nature of the photosensitizer is critical to the depth of tissue damage and the risk of adjacent tissue damage and stricture formation. The generation of protoporphyrin IX following administration of 5-aminolaevulinic acid has proved useful for the treatment of high-grade dysplasia in Barrett's oesophagus. A double-blind randomized placebo controlled trial has confirmed that it is a safe and effective method for the ablation of low-grade dysplasia. The treatment of more advanced lesions requires exogenously administered photo-sensitizers. However, recent data indicate that the neoplastic potential remains in some patients and continued follow-up is necessary. Photodynamic therapy can be used to eradicate early neoplasia and palliate advanced cancer, but caution is required before a definitive cure can be claimed.
Authors:
H Barr; A J Dix; C Kendall; N Stone
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Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  Alimentary pharmacology & therapeutics     Volume:  15     ISSN:  0269-2813     ISO Abbreviation:  Aliment. Pharmacol. Ther.     Publication Date:  2001 Mar 
Date Detail:
Created Date:  2001-03-21     Completed Date:  2001-05-03     Revised Date:  2005-11-16    
Medline Journal Info:
Nlm Unique ID:  8707234     Medline TA:  Aliment Pharmacol Ther     Country:  England    
Other Details:
Languages:  eng     Pagination:  311-21     Citation Subset:  IM    
Affiliation:
Cranfield Postgraduate Medical School in Gloucestershire, Gloucestershire Royal Hospital, Gloucester, UK. prof.barr@themail.co.uk
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MeSH Terms
Descriptor/Qualifier:
Barrett Esophagus / drug therapy*
Carcinoma, Squamous Cell / drug therapy*
Esophageal Neoplasms / drug therapy*
Helicobacter Infections / drug therapy
Humans
Palliative Care
Pancreatic Neoplasms / drug therapy*
Patient Selection
Photochemotherapy* / adverse effects,  methods
Photosensitizing Agents / pharmacology*
Stomach Neoplasms / drug therapy*
Chemical
Reg. No./Substance:
0/Photosensitizing Agents

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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