Abstract
Background
Photoactive drugs selectively accumulate in malignant tissue specimens and cause drug-induced fluorescence. Photodynamic diagnosis (PDD) and fluorescence can distinguish normal from malignant tissue.
Objective
Methods
From May 2012 to September 2013, a total of 70 patients underwent hepatic resections using 5-ALA-mediated PDD for liver tumors at our hospital.
Results
5-ALA fluorescence was detected in all hepatocellular carcinoma cases with serosa invasion. In liver metastasis from colorectal cancer cases with serosa invasion, 18 patients (85.7 %) were detected, and three patients (14.2 %) whose tumors showed complete response to neoadjuvant chemotherapy showed no fluorescence. Both superficial and deep malignant liver tumors were detected with 92.5 % sensitivity. Using 5-ALA-mediated PDD, tumors remaining at the cut surface and postoperative bile leakage were less frequent than in our previous hepatic resections using conventional white-light observation. Moreover, all malignant liver tumors were completely removed with a clear microscopic margin using 5-ALA, with a significant difference in resection margin width between 5-ALA-mediated PDD (6.7 ± 6.9 mm) and white-light observation (9.2 ± 7.0 mm; p = 0.0083).
Conclusions
With the detection of malignant liver tumors, residual tumor and bile leakage at the cut surface of the remnant liver were improved by PDD with 5-ALA. This procedure may provide greater sensitivity than the conventional procedure. Furthermore, 5-ALA-mediated PDD can ensure histological clearance regardless of the resection margin and preserve as much liver parenchyma as possible in patients with impaired liver function.
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Abbreviations
- CT:
-
Computed tomography
- MRI:
-
Magnetic resonance imaging
- PDD:
-
Photodynamic diagnosis
- 5-ALA:
-
5-Aminolevulinic acid
- HCC:
-
Hepatocellular carcinoma
- CRCLM:
-
Liver metastasis from colorectal cancer
- PBG:
-
Porphobilinogen
- PBG-D:
-
Porphobilinogen deaminase
- PpIX:
-
Protoporphyrin IX
- FC:
-
Ferrochelatase
- IPN-B:
-
Intraductal papillary neoplasms of the bile duct
- TACE:
-
Transcatheter arterial chemoembolization
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Disclosure
Drs. Y. Inoue, M. Hayashi, R. Tanaka, K. Komeda, F. Hirokawa, and K. Uchiyama have no conflicts of interest or financial ties to disclose.
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Inoue, Y., Tanaka, R., Komeda, K. et al. Fluorescence Detection of Malignant Liver Tumors using 5-Aminolevulinic Acid-Mediated Photodynamic Diagnosis: Principles, Technique, and Clinical Experience. World J Surg 38, 1786–1794 (2014). https://doi.org/10.1007/s00268-014-2463-9
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DOI: https://doi.org/10.1007/s00268-014-2463-9