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Youbi et al.                                                                                                                    Management of choroidal metastasis using external beam radiotherapy

           the patient to be treated quickly and, if necessary,   dynamic phototherapy, laser or anti-angiogenic
           reduce  the  time  before  resumption  of  any  systemic   instillations are possible but external radiotherapy
           treatment.  The results of exclusive photon radiation   remains the oldest and proven technique  in  clinical
           therapy of the main cohorts published in the literature   routine. [27,28]
           are reported in Table 3. According to the series,  the
                                                      [21]
           rates of stabilization or improvement of symptoms   In addition, systemic treatment alone with conventional
           vary from 57% to 100%. The results of our study are   chemotherapy  or targeted therapy may have a local
                                                                                                       [29]
           comparable.                                        anti-tumor action on choroidal metastases.  The
                                                              optimal  therapeutic attitude could  be the sequential
           Other therapeutic alternatives to conventional photon   association  of choroidal  radiotherapy  and  systemic
           radiation therapy have been reported. Some teams   treatment. [30,31]
           have used stereotactic radiotherapy or proton therapy
           on series of patients with very limited numbers. [22,23]    In  conclusion, radiotherapy is an effective  treatment
           The results functional results obtained do not appear   and low toxicity for  the management of  choroidal
           to be superior in terms of local control of the disease   metastases.  The hypofractionated  regimens should
           compared to photonic radiotherapy for classical tumor   be preferred in order to reduce the delay before the
           sites  (breast,  lung).  These  techniques  should  be   resumption  of a possible  systemic treatment which
           reserved for the most radioresistant tumors including   could also have a locoregional action on the choroidal
           melanomas. [24-26]                                 metastases.  This  treatment  fits  perfectly  into  the
                                                              palliative  or curative management  of oligo- or poly-
           Other local treatments such as plate brachytherapy,   metastatic disease.
           Table 3: Results of external beam radiotherapy with photons
                                                                                           Visual stabilisation or
           Authors                   Effective  Primitif tumor (effective)  Doses (spliting)
                                                                                              improvement
           Burmeister et al. [23]       6            Breast (6)       21 to 27 Gy (3 to 3.4 Gy)  100%
           Ratanatharathorn et al. [12]  19          Breast (19)     26 to 46 Gy (1.61 to 3 Gy)  100%
                                                     Breast (14)
           Nylén et al. [24]            17            Lung (1)        20 to 45 Gy (2 to 4 Gy)     81%
                                                     Others (2)
                                                     Lung (100)
           Röttinger et al. [11]       188           Breast (44)      30 to 40 Gy (2 to 3 Gy)     57%
                                                     Others (44)
                                                     Breast (38)
           Rosset et al. [21]           58            Lung (10)       20 to 53 Gy (1.8 to 2 Gy)   81%
                                                     Others (10)
                                                     Breast (31)
           Wiegel et al. [20]           50            Lung (13)           40 Gy (2 Gy)            86%
                                                     Others (6)
                                                     Breast (88)
           d’Abbadie et al. [16]       123            Lung (11)       18 to 30 Gy (3 to 6 Gy)     68%
                                                     Others (24)
           Demirci et al. [15]         129           Breast (129)     20 to 64 Gy (1.5 to 3 Gy)   82%
                                                     Breast (11)
           Bajcsay et al. [25]          17            Lung (4)           42 to 51 Gy (np)        100%
                                                     Others (2)
                                                      Lung (3)         30 Gy (3 Gy) or 20 Gy
           Bellmann et al. [13]         10           Breast (3)                                  100%
                                                     Others (4)           SBRT (20 Gy)
           Amichetti et al. [14]        49           Breast (49)      16 to 60 Gy (1.8 to 3 Gy)   88%
           Kreusel et al. [10]          18            Lung (18)           Unspecified             83%
                                                     Breast (41)
           Konstantinidis et al. [22]   96            Lung (27)           Unspecified            94.30%
                                                     Others (28)
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