Single fraction of accelerated partial breast irradiation in the elderly: Early clinical outcome

Abstract Background To analyze the clinical outcome of elderly women with early breast cancer who underwent accelerated partial breast irradiation (APBI) based on a post-operative single fraction of multicatheter interstitial high dose–rate brachytherapy (MIB). Methods A single institution retrospective cohort study was performed focusing on elderly patients (≥ 65 years old) presenting a low-risk breast carcinoma treated by lumpectomy plus axillary evaluation followed by MIB. A single fraction of 16 Gy was prescribed on the 100% isodose. Clinical outcome at 3 years was reported based on local relapse free survival (3-y LRFS), specific survival (SS) and overall survival (OS). Acute (< 180 days after APBI) and late toxicity were evaluated. Cosmetic results were clinically evaluated by the physician. Results Between January 2012 and August 2015, 48 women (51 lesions) were treated. Median age was 77.7 years (range: 65–92) with a median tumor size of 12 mm (range: 3–32). Five patients (pts) presented an axillary lymph node involvement (4 Nmic, 1 N1). Invasive ductal carcinoma was the most frequent histology type (86.3%). With a median follow–up of 40 months (range: 36–42), no local relapse occurred while 1 pt. developed axillary relapse (2.1%). The 3-y LRFS, SS and OS rates were 100%, 100% and 93.1% respectively. Forty-five acute events were remained. The most frequent acute toxicity was grade (G) 1 hyperpigmentation (26.7%), 3 pts. (6.3%) presented G3 acute toxicity (2 breast hematomas, 1 breast abscess). No ≥ G3 late toxicity was observed while 15 late toxicities occurred (G1: 13 events - 86.7%) mainly breast fibrosis). The rate of excellent cosmetic outcome was 76.4%. Conclusion We reported promising and encouraging clinical outcome of a post-operative single fraction of MIB ABPI in the elderly. This approach leads to consider a sfAPBI as an attractive alternative to intra-operative radiation therapy while all the patients will be good candidates for APBI in regards to the post-operative pathological report. More mature results (number of patients and follow-up) are needed

Re-irradiation of recurrent vertebral metastasis after two previous spinal cord irradiation: A case report

BackgroundManagement of a recurrent vertebral metastasis in a situation of previously irradiated spinal cord is a challenging clinical dilemma.Case presentationWe report a first case of second retreatment of a spinal metastasis initially irradiated with standard radiotherapy and stereotactic body radiation therapy (SBRT), who subsequently progressed with imaging-confirmed local tumor progression at the same level. After a third course of irradiation with SBRT, a complete response was achieved. After 8 months of follow-up, the patients remain free of local recurrence.ConclusionA third course of vertebral irradiation for a recurrent vertebral metastasis failing to two previous irradiations, in this particular case, have shown the feasibility and efficacy of the technique as a salvage treatment option. This approach could be used in a selected group of patient if an adequate dose is delivered to the target while observing critical tissue tolerance limits

Radiosensibilité des oligométastases pulmonaires issues d'un primitif colorectal traitées par irradiation stéréotaxique

Introduction : <br> Les patients atteints de cancers colorectaux métastatiques peuvent présenter des oligométastases pulmonaires pour lesquelles une irradiation par radiothérapie stéréotaxique peut être proposée. L’objectif de l’étude est de rapporter l’efficacité et les facteurs pronostiques de survie dans cette situation.<br> Matériels et méthodes : <br>Il s’agit d’une étude rétrospective qui a inclus des patients présentant des oligométastases pulmonaires de primitif colorectal irradiés par radiothérapie stéréotaxique entre septembre 2007 et Novembre 2014.<br>Résultats : <br>Nous avons identifié 53 patients oligométastatiques qui ont été traitées pour 87 lésions métastatiques pulmonaires. La dose médiane de prescription était de 60 Gy en 3 fractions (médiane de dose biologique efficace de 180 Gy). Le suivi médian était de 33,0 mois. Le contrôle local, le taux de survie sans rechute métastatique et le taux de survie globale à 1 et 2 ans étaient respectivement de 79,8% et 78,2%, 29,2% et 16,2%, et 83,8% et 69,3%. En analyse multivariée, le site primitif rectal (p = 0,001) et un nombre de métastases supérieur à 2 (p = 0,02) étaient significativement associés à un taux de contrôle local diminué. Les lésions rectales étaient associées à une dose d’irradiation plus élevée (169,3 Gy vs 153,3 Gy, p = 0,01) et un taux de mutation KRAS plus élevé (73,3% versus 40,4%, p = 0,002). Le statut mutationnel KRAS n’était pas corrélé au contrôle local, mais corrélé à une diminution de la survie sans métastases à 1 an (0% vs 37,5% ; p = 0,04), comparé aux patients KRAS sauvages. En analyse multivariée, un volume tumoral macroscopique irradié ≥ 3266mm3 (p = 0,03) et un nombre de métastases >2 (p = 0,04) étaient corrélés à une moins bonne survie globale.<br>Conclusion : <br>Dans le CRC, les oligométastases pulmonaires irradiées par radiothérapie stéréotaxique ont présenté de moins bons résultats chez les patients ayant un primitif rectal, > 2 métastases, ou avec un plus important volume tumoral macroscopique irradié. Un traitement plus agressif pourrait être discuté chez cette sous-population

Single fraction of accelerated partial breast irradiation in the elderly: early clinical outcome

Abstract Background To analyze the clinical outcome of elderly women with early breast cancer who underwent accelerated partial breast irradiation (APBI) based on a post-operative single fraction of multicatheter interstitial high dose–rate brachytherapy (MIB). Methods A single institution retrospective cohort study was performed focusing on elderly patients (≥ 65 years old) presenting a low-risk breast carcinoma treated by lumpectomy plus axillary evaluation followed by MIB. A single fraction of 16 Gy was prescribed on the 100% isodose. Clinical outcome at 3 years was reported based on local relapse free survival (3-y LRFS), specific survival (SS) and overall survival (OS). Acute (< 180 days after APBI) and late toxicity were evaluated. Cosmetic results were clinically evaluated by the physician. Results Between January 2012 and August 2015, 48 women (51 lesions) were treated. Median age was 77.7 years (range: 65–92) with a median tumor size of 12 mm (range: 3–32). Five patients (pts) presented an axillary lymph node involvement (4 Nmic, 1 N1). Invasive ductal carcinoma was the most frequent histology type (86.3%). With a median follow–up of 40 months (range: 36–42), no local relapse occurred while 1 pt. developed axillary relapse (2.1%). The 3-y LRFS, SS and OS rates were 100%, 100% and 93.1% respectively. Forty-five acute events were remained. The most frequent acute toxicity was grade (G) 1 hyperpigmentation (26.7%), 3 pts. (6.3%) presented G3 acute toxicity (2 breast hematomas, 1 breast abscess). No ≥ G3 late toxicity was observed while 15 late toxicities occurred (G1: 13 events - 86.7%) mainly breast fibrosis). The rate of excellent cosmetic outcome was 76.4%. Conclusion We reported promising and encouraging clinical outcome of a post-operative single fraction of MIB ABPI in the elderly. This approach leads to consider a sfAPBI as an attractive alternative to intra-operative radiation therapy while all the patients will be good candidates for APBI in regards to the post-operative pathological report. More mature results (number of patients and follow-up) are needed