[Diffusion prophylactic axillary irradiation in breast cancer - Literature review]

PURPOSE

In breast cancer, radiotherapy is an essential component of the treatment. However, indications of irradiation of the internal mammary chain and axillary area are debatables. Axillary recurrence in patients with invasive breast carcinoma remains an issue. Currently, the substitution of axillary lymph node dissection by sentinel node biopsy leads to revisit the role of axillary irradiation. Breast irradiation including level I, II and III might decrease the risk of axillary recurrence.

MATERIAL AND METHODS

A literature search was performed in PubMed and the Cochrane library to identify articles publishing data regarding dose-volume analysis of axillary levels in breast irradiation aiming to determine the potential therapeutic implications.

RESULTS

Eleven articles were retained. A total of 375 treatment plans were analyzed. The results concerning the irradiation technique, initial dose prescribed to breast, delineated volumes and dose received at axillary levels were heterogeneous. The average dose delivered to axilla levels I-III with 3D-conformal radiotherapy using standard fields were between 24Gy and 43.5Gy, 3Gy and 32.5Gy and between 1.0Gy and 20.5Gy respectively. The average doses delivered to axilla levels I-III with 3D-conformal radiotherapy using high tangential fields were between 38Gy and 49.7Gy, 11Gy and 47.1Gy and 5Gy 38.7Gy, 32.1Gy and 5Gy (result available for only one study) respectively. Finally, the average doses delivered to axilla levels I-III with intensity modulated radiation therapy were between 14.5Gy and 42.6Gy, 3.4Gy and 35Gy and between 1.2Gy and 25.5Gy respectively.

CONCLUSIONS

Incidental axillary dose seems insufficient to be therapeutic regardless of the irradiation technique. There are meaningful differences between intensity modulated radiation therapy and 3D-conformal radiotherapy.

Coverage losses of substance in the shoulder

Losses of substance of the shoulder are less common than elsewhere in the upper limb. They arise essentially from tumors (sarcomas), infectious diseases (hidradenitis) or traumatic events, (burns). The objectives of reconstruction depend on whether the losses of substance are located on the curve of the shoulder or in the axillary area. There exist numerous regional solutions, including perforator, propeller, pedicled and free flaps. The donor region may be the thorax (latissimus dorsi, serratus anterior), the back (trapezium, scapular or subscapular flaps, occipito-cervico-thoracic flap), the anterior surface of the thorax (pectoralis major or minor, supraclavicular, perforators of the acromiothoracic artery, delto-pectoral flap) or arm (brachial lateral or medial). Multitissular reconstructions are also possible in regional and pedicled form, as well as microanastomosed flaps in exceptional conditions.

[Not Available]

SURGICAL DE-ESCALATION FOR INVASIVE BREAST CANCER TREATMENT

A surgical therapeutic de-escalation is going to continue but necessarily has to design in a progressive careful way and especially arranged with the other practitioners and therapeutic methods. These strategies concern as well the surgery of the breast as that of the axillary basin.