Related Experiment Videos
Photodynamic therapy for colorectal cancer: a quantitative pilot study
H Barr1, N Krasner, P B Boulos
1Gastrointestinal Unit, Walton Hospital, Liverpool, UK.
The British Journal of Surgery
|January 1, 1990
Summary
Endoscopic photodynamic therapy (PDT) shows promise for treating colorectal cancers. While effective for small tumors, PDT may be best for residual disease after other treatments.
Area of Science:
- Oncology
- Gastroenterology
- Medical Technology
Background:
- Colorectal cancers pose significant treatment challenges, especially in patients unsuitable for surgery.
- Endoscopic photodynamic therapy (PDT) offers a minimally invasive treatment modality.
Purpose of the Study:
- To evaluate the efficacy and safety of endoscopic photodynamic therapy (PDT) for colorectal cancers.
- To assess tumor response by measuring reduction in tumor depth post-PDT.
Main Methods:
- Ten patients with inoperable colorectal cancers received PDT.
- Treatment involved sensitization with haematoporphyrin derivative followed by laser light exposure.
- Tumor response was assessed via colonoscopy, biopsy, and endoluminal ultrasound.
Main Results:
- Two patients with small lesions achieved tumor-free status at 20 and 28 months post-PDT.
- One advanced tumor treatment resulted in significant secondary hemorrhage.
- Tumor depth reduction was quantified to assess PDT's effect.
Conclusions:
- PDT may be a viable option for small colorectal tumors or residual disease.
- Careful patient selection is crucial, considering potential complications like hemorrhage.