Computed tomography-based prediction of interval cytoreduction in advanced ovarian cancer.

Objective: Our retrospective study aimed to investigate the role of computed tomography (CT) using both the tomographic Fagotti index and the Sugarbaker peritoneal cancer index (PCI) in predicting the feasibility of optimal interval debulking surgery in epithelial ovarian cancer.

Methods: Patients with advanced ovarian cancer treated in our institution who were eligible for interval debulking surgery were identified and included in the study. A retrospective image collection was operated, and CT scan evaluations were conducted by 2 independent radiologists to establish both scores (Fagotti index and Sugarbaker PCI).

Unusual metastases to the breast from different extramammary malignancies: a multimodality imaging approach in a case series.

Extramammary metastases are uncommon and usually related to a poor prognosis, but the radiologist can suspect the diagnosis based on the patient's clinical history and specific imaging findings. Several imaging procedures may be used to evaluate breast metastases from different extramammary malignancies, including mammography, ultrasound, magnetic resonance imaging (MRI), computed tomography (CT), and positron emission tomography-CT (PET-CT). The clinical and imaging presentation of these metastases is contingent upon how the illness spreads, however, they have the potential to resemble either benign or malignant breast tumors.

Breast density quantification in dual-energy mammography using virtual anthropomorphic phantoms.

Purpose: Breast density is a significant risk factor for breast cancer and can impact the sensitivity of screening mammography. Area-based breast density measurements may not provide an accurate representation of the tissue distribution, therefore volumetric breast density (VBD) measurements are preferred. Dual-energy mammography enables volumetric measurements without additional assumptions about breast shape.

Inter- and Intra-Operator Variability of Regularized Backscatter Quantitative Ultrasound for the Characterization of Breast Masses.

Objectives: Here we report on the intra- and inter-operator variability of the backscatter coefficient (BSC) estimated with a new low-variance quantitative ultrasound (QUS) approach applied to breast lesions in vivo.

Methods: Radiofrequency (RF) echo signals were acquired from 29 BIRADS 4 and 5 breast lesions in 2 sequential cohorts following 2 imaging protocols: cohort 1) radial and antiradial views, and cohort 2) short- and long-axis views. Protocol 2 was implemented after retraining and discussion on how to improve reproducibility.

Relationship between Health Inequalities and Breast Cancer Survival in Mexican Women.

Objective: We aimed to analyze the relationship between the survival of patients with breast cancer and health inequalities.

Methods: A retrospective cohort study of women with stage III breast cancer according to public healthcare was conducted. Groups were stratified according to the course of treatment and the presence of chronic disease other than cancer.

[Not Available].

Desde el comienzo de la pandemia de Covid-19 los servi-cios de prevención de cáncer de mama han sido aplazados gravemente. Esta acción provocó la reducción en el número acumulado de mastografías de detección a nivel mundial e incrementó las disparidades en salud, sobre todo entre las mujeres vulnerables. Si bien la evidencia que respalda las es-trategias para rescatar el tamizaje con mastografía en la fase de resolución de la pandemia no es suficiente, hay algunas consideraciones pragmáticas que pueden guiar su recupera-ción y garantizar su continuidad.

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Physicians' attitudes and perceived barriers to adherence to the national breast cancer clinical practice guidelines in Mexico: a survey study.

Background: Adherence to clinical practice guidelines improves outcomes for patients with breast cancer. However, their implementation may not be feasible in low- and middle-income countries. This study aimed to evaluate physicians' adherence, attitudes, and barriers towards the Colima Consensus, which is the Mexican national breast cancer clinical practice guideline.

Whole lesion histogram analysis of apparent diffusion coefficient predicts therapy response in locally advanced rectal cancer.

Background: Whole-tumor apparent diffusion coefficient (ADC) histogram analysis is relevant to predicting the neoadjuvant chemoradiation therapy (nCRT) response in patients with locally advanced rectal cancer (LARC).

Aim: To evaluate the performance of ADC histogram-derived parameters for predicting the outcomes of patients with LARC.

Methods: This is a single-center, retrospective study, which included 48 patients with LARC.

[Not Available].

No disponible.

The apparent diffusion coefficient is a useful biomarker in predicting treatment response in patients with locally advanced rectal cancer.

Background: Apparent diffusion coefficient (ADC) values achieve promising results in treatment response prediction in patients with several types of cancers.

Purpose: To determine whether ADC values predict neoadjuvant chemoradiation treatment (nCRT) response in patients with locally advanced rectal cancer (LARC).

Material And Methods: Forty-four patients with LARC who underwent magnetic resonance imaging scans before and after nCRT followed by delayed surgery were enrolled retrospectively.

The apparent diffusion coefficient (ADC) on 3-T MRI differentiates myometrial invasion depth and histological grade in patients with endometrial cancer.

Background: Diffusion-weighted magnetic resonance imaging (DW-MRI) with apparent diffusion coefficient (ADC) measurement provides additional information about tumor microstructure with potential relevance for staging and predicting aggressive disease in patients with endometrial cancer (EC).

Purpose: To determine whether ADC values in EC diverge according to the tumor's histologic grade and myometrial invasion depth.

Material And Methods: A sample of 48 pathologically confirmed cases of EC were reviewed retrospectively.

A Case Series of Breast Metastases from Different Extramammary Malignancies and Their Literature Review.

Metastasis to the breast from all other primary sites is unusual. Twelve patients were diagnosed between 2007 and 2017 at National Cancer Institute, Mexico. Solitary or multiple masses, round or oval, and hypoechoic and solid lesions with posterior acoustic shadowing were patterns commonly reported in these patients; other arrangements include diffuse involvement of the breast simulating an inflammatory carcinoma.

An Uncommon Case of Bilateral Breast Enlargement Diagnosed as Tumoral Pseudoangiomatous Stromal Hyperplasia: Imaging and Pathological Findings.

The incidence of reported pseudoangiomatous stromal hyperplasia (PASH), as well as the variability and severity of clinical presentations, is increasing in the literature. In parallel, several authors posit the need for an improved classification of PASH to avoid possible variables associated with this diagnosis. Here, we present a 25-year-old woman with PASH accompanied by severe bilateral and symmetrical breasts enlargement, highlighting an uncommon clinical presentation of PASH as much as the careful interdisciplinary review and correlation of histology and all available imaging studies to confirm the definitive diagnosis.

Positron emission mammography in the evaluation of interim response to neoadjuvant chemotherapy in patients with locally advanced breast cancer.

Unlabelled: Neoadjuvant chemotherapy (NAC) has an important role in patients with locally advanced cancers, treating distant micrometastases, downstaging tumors, improving operability, and sometimes allowing breast-conserving surgery to take place. We studied the association between two Positron Emission Mammography with F-FDG (F-FDG-PEM) semi-quantitative parameters in 108 patients and correlated with pathologic response in each of the following breast cancer subtype: Triple negative breast cancer (TPN), HER2-positive, and ER-positive/HER2-negative cancers.

Aim: Examine the association between two Positron Emission Mammography (PEM) semi-quantitative parameters: PUVmax (maximum uptake value) and LTB (lesion to background) baseline and the end of NAC with pathologic response in each breast cancer subtype.

Ga-DTPA Anti-HER2 positron emission tomography/CT successfully predicts the overexpression of human epidermal growth factor receptor in lung metastases from breast cancer.

Molecular identification of a metastatic tumour without the inconvenience of a biopsy and the time required for pathological characterization is possible using molecular imaging. Here, we present the case of a patient with breast cancer in whom Ga-diethylenetriamine pentaacetic acid anti-human epidermal growth factor receptor 2 positron emission tomography-CT was successfully employed to characterize the expression of human epidermal growth factor receptor 2 in metastatic sites.

Clinical study of contrast-enhanced digital mammography and the evaluation of blood and lymphatic microvessel density.

Objective: To correlate image parameters in contrast-enhanced digital mammography (CEDM) with blood and lymphatic microvessel density (MVD).

Methods: 18 Breast Imaging-Reporting and Data System (BI-RADS)-4 to BI-RADS-5 patients were subjected to CEDM. Craniocaudal views were acquired, two views (low and high energy) before iodine contrast medium (CM) injection and four views (high energy) 1-5 min afterwards.

Idiopathic granulomatous mastitis. Experience at a cancer center.

Background: Idiopathic granulomatous mastitis (IGM) is a benign breast disease that has been described as a rare granulomatous inflammation (GI). It can mimic inflammatory breast cancer.

Material And Methods: We included women with a diagnosis of IGM referred to an oncologic hospital between January 01, 2007 and to March 31, 2011, with diagnosis of breast cancer, in whom biopsy reported GI, without other cause related.

[In situ and invasive carcinoma identified through an opportunistic screening mammography in asymptomatic women in Mexico City].

Objective: To describe the mammographic findings and carcinoma detection rate in asymptomatic women of Mexico City, that participated in an opportunistic screening program.

Materials And Methods: 39 491 participants were included, with mammograms performed and interpreted in the National Cancer Institute, from 2008 to 2011. The mammographic findings, type of lesion and true positives (TP), are described by age groups.

[Validity and reliability of mammographic interpretation by Mexican radiologists, using the BI-RADS system].

Objective: Mammographic interpretation using the BI-RADS system determines if a patient will continue in the regular screening program or needs additional studies for breast cancer diagnosis, hence the importance of its evaluation. Sensitivity, specificity, diagnostic accuracy of mammographic interpretation and inter- and intra-observer variation, were assessed in a random sample of 29 radiologists from the Mexican Ministry of Health.

Material And Methods: Eighty diagnostic and screening mammographic studies were selected from the National Cancer Institute in Mexico City.

Importance of the preoperative evaluation of multifocal and multicentric breast cancer with magnetic resonance imaging in women with dense parenchyma.

Background: The presence and detection of multifocal and multicentric disease significantly increases the risk of recurrence and changes the best therapeutic approach in patients with breast cancer. Mammography has low sensitivity to detect multiple malignant foci in patients with dense breast parenchyma. We prospectively evaluated Magnetic Resonance Imaging (MRI) as part of preoperative assessment.