PET/CT radiomics in breast cancer: mind the step

Publication date: Available online 21 January 2020Source: MethodsAuthor(s): Martina Sollini, Luca Cozzi, Gaia Ninatti, Lidija Antunovic, Lara Cavinato, Arturo Chiti, Margarita KirienkoAbstractThe aim of the present review was to assess the current status of positron emission tomography/computed tomography (PET/CT) radiomics research in breast cancer, and in particular to analyze the strengths and weaknesses of the published papers in order to identify challenges and suggest possible solutions and future research directions. Various combinations of the terms “breast”, “radiomic”, “PET”, “radiomics”, “texture”, and “textural” were used for the literature search, extended until 8 July 2019, within the PubMed/MEDLINE database. Twenty-six articles fulfilling the inclusion/exclusion criteria were retrieved in full text and analyzed. The studies had technical and clinical objectives, including diagnosis, biological characterization (correlation with histology, molecular subtypes and IHC marker expression), prediction of response to neoadjuvant chemotherapy, staging, and outcome prediction. We reviewed and discussed the selected investigations following the radiomics workflow steps related to the clinical, technical, analysis, and reporting issues. Most of the current evidence on the clinical role of PET/CT radiomics in breast cancer is at the feasibility level. Harmonized methods in image acquisition, post-proce...
Source: Methods - Category: Molecular Biology Source Type: research

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CONCLUSION: Application of the subtype-guided 18F-FDG PET/CT could accurately predict nodal response and aid in tailoring axillary surgery among patients with node-positive breast cancer after NAC, which includes identifying candidates appropriate for TAD or directly proceeding to ALND. This approach might help to avoid false-negative events in TAD. IMPLICATIONS FOR PRACTICE: This feasibility study showed that 18[F]-fluorodeoxyglucose (18F-FDG) positron emission tomography/computed tomography (PET/CT) could accurately predict nodal response after neoadjuvant chemotherapy (NAC) among patients with breast cancer with in...
Source: The Oncologist - Category: Cancer & Oncology Authors: Tags: Oncologist Source Type: research
CONCLUSION: The pre-treatment tumor SUVmax could be utilized as an independent imaging biomarker of the tumor aggressiveness and poor prognosis. Risk stratification based on this index could play a pivotal role in alteration of treatment planning, such as neoadjuvant chemotherapy (precision oncology). PMID: 31587025 [PubMed - as supplied by publisher]
Source: Hellenic Journal of Nuclear Medicine - Category: Nuclear Medicine Tags: Hell J Nucl Med Source Type: research
AbstractBackgroundThe density of tumor-infiltrating lymphocytes (TIL) is a predictive factor for response to neoadjuvant systemic therapy (NAST) in breast cancer. High TIL density correlates with higher complete pathologic remission (pCR) in triple negative and HER2 positive breast cancer. Additionally, not only TIL density but also subsets of immune cells in tumor stroma seem to play an important role in cancer and immune cell interaction and response to chemotherapy. Our aim is to determine TIL density and expression of CD 20, CD3, CD8, PD-L1, FOXP3 and PGM1 on core biopsy specimen and find a correlation with pCR.Trial d...
Source: Annals of Oncology - Category: Cancer & Oncology Source Type: research
ConclusionDespite guideline recommendations, a high rate of preoperative staging imaging is completed for patients with clinical stage 1 or 2 breast cancer who receive NAC, with few positive results.
Source: Annals of Surgical Oncology - Category: Cancer & Oncology Source Type: research
603Purpose: To investigate the prognostic value of pretreatment 18F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG-PET/CT), magnetic resonance spectroscopy (MRS), and diffusion weighted imaging (DWI) in breast cancer patients. Materials and Methods: 83 patients with breast cancer larger than 2 cm underwent pretreatment FDG-PET/CT and 3-Tesla breast MRI, followed by neoadjuvant chemotherapy (NAC) and subsequent surgical resection. The relationships of PET parameters [maximum standardized uptake value (SUVmax), metabolic tumor volume (MTV), total lesion glycolysis (TLG)], total choline peak, and mea...
Source: Journal of Nuclear Medicine - Category: Nuclear Medicine Authors: Tags: Breast Cancer: Novel Tracer and Practice Advances Source Type: research
Conclusions: The newly developed radiomic signature was a powerful predictor of LN metastasis and the radiomics nomogram could facilitate the preoperative individualized prediction of LN status. Introduction Gastric cancer (GC) is one of the most common malignant tumors and the second leading cause of cancer-related deaths worldwide (1). Accurate evaluation of lymph node metastasis (LNM) status in GC patients is vital for prognosis and treatment decisions (2–4). Some histopathologic factors and biomarkers (e.g., lymphatic invasion, matrix metalloproteinase-2) are found to be able to predict LNM in GC, but mos...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
Conclusions: This study is the first to demonstrate a dose-response relationship between risk of complications and near Dmax, where hypofractionated regimen or boost RT can play an important role. Rigorous RT-quality assurance program and modification of dose constraints could be considered as a critically important component for ongoing trials of hypofractionation. Based on our findings, we initiated a multi-center retrospective study (KROG 18-04) and a prospective study (NCT03523078) to validate our findings. Introduction Breast reconstruction provides important psychosocial, cosmetic, and quality of life benefits ...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
Authors: Kitajima K, Yamano T, Miyoshi Y, Katsuura T, Enoki T, Yamakado K Abstract OBJECTIVE: To investigate the prognostic value of pretreatment fluorine-18-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT), magnetic resonance spectroscopy (MRS), and diffusion weighted imaging (DWI) in breast cancer patients. SUBJECTS AND METHODS: Eighty-three patients who had a tumor larger than 2cm shown by 18F-FDG PET/CT and by 3-Tesla breast MRI, received neoadjuvant chemotherapy (NAC) and subsequent surgical resection. Relationships of PET parameters, including maximum standardized uptak...
Source: Hellenic Journal of Nuclear Medicine - Category: Nuclear Medicine Tags: Hell J Nucl Med Source Type: research
Authors: Tsuchitani T, Takahashi Y, Maeda Y, Oda M, Enoki T, Kotoura N, Kitajima K Abstract OBJECTIVE: To examine the correlation of the quantitative indexes standardized uptake value (SUV), SUV corrected for lean body mass (SUL) and SUV corrected for Japanese lean body mass (SULj) with body weight to develop an appropriate quantitative index independent of body weight fluctuation for assessment of response to cancer treatment in Japanese patients. SUBJECTS AND METHODS: Fifty-six males with esophageal cancer and 30 females with breast cancer underwent fluorine-18-fluoro-2-deoxy-D-glucose (18F-FDG) positron emis...
Source: Hellenic Journal of Nuclear Medicine - Category: Nuclear Medicine Tags: Hell J Nucl Med Source Type: research
Publication date: Available online 22 February 2019Source: Surgery (Oxford)Author(s): Simon Lowes, Alice Leaver, Alan RedmanAbstractImaging plays a critical role in the diagnosis and management of breast cancer. Two-view mammography and ultrasound form the mainstay of breast imaging and are essential components of the triple assessment. Digital mammography is rapidly replacing analogue mammography, and recent advances such as digital tomosynthesis add a third dimension to conventional 2D mammographic images. The versatility of ultrasound allows assessment of the breast and axilla as well as accurately targeted intervention...
Source: Surgery (Oxford) - Category: Surgery Source Type: research
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