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Clinical outcome of a novel photodynamic therapy technique using acridine orange for synovial sarcomas.

Abstract：

:Synovial sarcoma (SS) is one of common malignant soft-tissue tumors and is encountered most commonly in children and young adults. It frequently involves or invades major neurovascular structures and bones, and its local recurrence rate after simple resection has been reported to be as high as up to 80%. Because major nerves and vessels, as well as an adequate amount of bone, must be preserved to restore excellent limb function in cases of SS, a surgical technique entailing a low risk of local recurrence is needed. Based on the findings of recent experimental studies conducted by us using a mouse osteosarcoma model, we developed a novel therapeutic technique for SS, consisting of reduction surgery followed by photodynamic therapy using acridine orange (AO-PDT), with or without X-ray irradiation at 5 Gy. A preliminary study revealed that low-dose X-rays also excite AO like photons. After an initial study on cell cultures, this novel technique was applied to six cases of SS. A follow-up of the subjects to determine the clinical outcome revealed that none of the cases treated by AO-PDT, including the four cases treated by additional 5 Gy irradiation and the two cases not receiving any radiation, showed any evidence of recurrence or local/systemic complications during the follow-up period of 19-51 months after the surgery. Therefore, we believe that AO-PDT with 5 Gy irradiation may be an excellent novel therapeutic modality with reduction surgery to salvage excellent limb function in SS involving major nerves and vessels or bones.

journal_name

Photochem Photobiol

journal_title

Photochemistry and photobiology

authors

Kusuzaki K,Murata H,Matsubara T,Miyazaki S,Shintani K,Seto M,Matsumine A,Hosoi H,Sugimoto T,Uchida A

doi

10.1562/2004-06-27-RA-218

subject

Has Abstract

pub_date

2005-05-01 00:00:00

pages

705-9

issue

3

eissn

0031-8655

issn

1751-1097

pii

2004-06-27-RA-218

journal_volume

81

pub_type

临床试验,杂志文章

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