De-Escalation of Nodal Surgery in Clinically Node-Positive Breast Cancer.

Importance: Increasing evidence supports the oncologic safety of de-escalating axillary surgery for patients with breast cancer after neoadjuvant chemotherapy (NAC).

Objective: To evaluate the oncologic outcomes of de-escalating axillary surgery among patients with clinically node (cN)-positive breast cancer and patients whose disease became cN negative after NAC (ycN negative).

Design, Setting, And Participants: In the NEOSENTITURK MF-1803 prospective cohort registry trial, patients from 37 centers with cT1-4N1-3M0 disease treated with sentinel lymph node biopsy (SLNB) or targeted axillary dissection (TAD) alone or with ypN-negative or ypN-positive disease after NAC were recruited between February 15, 2019, and January 1, 2023, and evaluated.

Phosphorus-containing polycarbosilazanes: synthesis dehydrocoupling catalysis and flame-retardant properties.

The barium complex [Ba{N(SiMe)}] has been used to catalyse the dehydropolymerisation of the phosphine-functionalised hydrosilane 4-PhP-CHSiH (A) with the α,ω-diamine 1,4-(CHNHMe)-CH (C), for the production of -[Si(4-CHPPh)H-N(Me)CH-CH-CHN(Me)]- polycarbosilazanes that contain dangling phosphino groups along the polymer backbone. The comonomers A and C, specifically prepared for this purpose and comprehensively characterised, lend themselves well to barium-promoted dehydrocoupling catalysis. They allow for the formation of linear, amine-capped polymers with molecular weights in the range 4000-8000 g mol, as estimated by DOSY and H end-group NMR analyses.

ASO Author Reflections: Nodal Recurrence Is Rare in Patients with cN+/ycN0 Breast Cancer after Neoadjuvant Chemotherapy Regardless of the Extent of Axillary Surgery or Nodal Pathology in the NEOSENTITURK-Trials MF18-02/18-03 Provided Regional Nodal Irradiation Is Administered.

The combined analysis of the retrospective multicentre and prospective multicenter cohort registry trial NEOSENTITURK MF18-02/18-03 (NCT04250129) investigated the outcomes and factors associated with recurrence in patients with cT1-4N1-3M0 who underwent a succesful sentinel lymph node biopsy or targeted axillary dissection (n = 1470), with or without axillary lymph node dissection (n = 937) after neoadjuvant chemotherapy. The present large registry data suggest that axillary recurrences (AR) can be detected at exceedingly low rates (< 0.5%) within 3 years after surgery.

Breast Cancer Recurrence in Initially Clinically Node-Positive Patients Undergoing Sentinel Lymph Node Biopsy After Neoadjuvant Chemotherapy in the NEOSENTITURK-Trials MF18-02/18-03.

Background: This study aims to identify factors predicting recurrence and unfavorable prognosis in cN+ patients who have undergone sentinel lymph node biopsy (SLNB) following neoadjuvant chemotherapy (NAC).

Methods: The retrospective multi-centre "MF18-02" and the prospective multi-centre cohort registry trial "MF18-03" (NCT04250129) included patients with cT1-4N1-3M0 with SLNB+/- axillary lymph node dissection (ALND) post-NAC.

Results: A total of 2407 cN+ patients, who later achieved cN0 status after NAC and subsequently underwent SLNB, were studied.

Navigating Lymphedema: The Impact of Indocyanine Green Lymphography on Personalized Therapy Outcomes in Breast Cancer Patients.

Aim: To evaluate the role of Indocyanine Green Lymphography (ICG_L) in the early diagnosis and personalized management of breast cancer-related lymphedema (BCRL) among high-risk breast cancer (BC) survivors.

Methods: Patients who admitted to the UPMC Magee-Womens Hospital Lymphedema Program between October 2018 and December 2021 with episodic symptoms were enrolled into the study. Patient demographics, clinical characteristics, and outcomes were prospectively collected and retrospectively analysed.