Evaluation of traditional targeted axillary dissection eligibility criteria for node-positive breast cancer after neoadjuvant chemotherapy in a prospective multicenter registry.

INTRODUCTION: Targeted axillary dissection (TAD) is performed after neoadjuvant systemic therapy (NST) to decrease the rate of non-therapeutic axillary dissection (ALND) for patients with node-positive breast cancer. In order to ensure the oncologic safety of TAD, eligibility criteria resulting in a low false negative rate (FNR) have been proposed. The purpose of this study was to evaluate the utility of the traditional criteria. METHODS: Data was collected from a prospective multicenter registry. In order to ascertain FNRs, pathologic findings in the sentinel lymph nodes (LN)s, malignant clipped LN, and axillary contents were determined. The FNRs within TAD eligibility criterion groups were compared. RESULTS: A total of 110 patients underwent TAD and ALND, and were therefore eligible for analysis. TAD retained a low FNR in advanced clinical T-N stage compared with earlier disease (T stage: 95% CI 0.00-11.93, p = 0.42; N stage: 95% CI 0.00-8.76, p = 0.31). Presentation with ≥4 abnormal LNs on axillary ultrasound did not predict a high TAD FNR (95% CI 0.00-5.37, p = 0.16). No significant differences were noted in TAD FNR when single was compared with dual tracer (blue dye vs dual tracer 95% CI 0.72-52.49, p = 0.13; radiotracer vs dual tracer 0.04-20.11, p = 0.51). Excision of the clipped LN and only one SLN was as accurate as excision of the clipped LN and ≥2 SLNs (95% CI 0.00-10.61, p = 0.38). CONCLUSIONS: TAD retained a low FNR among patients traditionally considered ineligible for this technique. However, excision of the clipped LN and at least one SLN remained essential to a low FNR.

Contrast enhanced mammography: focus on frequently encountered benign and malignant diagnoses.

Contrast-enhanced mammography (CEM) is becoming a widely adopted modality in breast imaging over the past few decades and exponentially so over the last few years, with strong evidence of high diagnostic performance in cancer detection. Evidence is also growing indicating comparative performance of CEM to MRI in sensitivity with fewer false positive rates. As application of CEM ranges from potential use in screening dense breast populations to staging of known breast malignancy, increased familiarity with the modality and its implementation, and disease processes encountered becomes of great clinical significance. This review emphasizes expected normal findings on CEM followed by a focus on examples of the commonly encountered benign and malignant pathologies on CEM.

Virtual Interviewing for Radiology Residency: Pluses, Minuses, and A Review of the Literature.

This article reviews current medical literature to assess the benefits and drawbacks of virtual interviews for radiology residencies as well as the downstream effects of these changes, best practices, and potential future recruitment methods. Topics covered include the effects of remote recruitment in promoting accessibility and applicant diversity and equality as well as fiscal, environmental, and time savings in combination with technical challenges, the complications of over application, challenges in assessment of program culture and location, impact on morale, and hidden financial and emotional costs. Learnings from other medical specialties are highlighted in addition to the process of signaling, guidelines for conducting and participating in virtual interviews, and matters for future consideration.

Is Calcium Score in the Abdominal Aorta or Renal Arteries Predictive of Acute Kidney Injury After Cardiopulmonary Bypass: An Exploratory Study.

Introduction Acute kidney injury (AKI) remains a serious complication after surgery with cardiopulmonary bypass (CPB). A relationship similar to the one between coronary artery calcification and increased incidence of cardiac complications is hypothesized to exist for aortic calcification and the development of AKI. Elevated pulse pressure (PP) hypertension has been shown to be a predictor of AKI-CPB (AKI after CPB surgery), and calcium deposition and stiffening of the body's conduit arteries may be part of this process. We hypothesized that calcium scores obtained from non-contrast computed tomography (CT) scans of the infrarenal aorta and renal arteries would be independently and significantly associated with AKI-CPB. Methods We conducted a retrospective study of 65 subjects who underwent non-emergent open heart surgery with CPB in a tertiary healthcare center. AKI-CPB was diagnosed using the Acute Kidney Injury Network criteria. Aortic and renal artery calcium (Agatston) scores were obtained and entered into a multivariable logistic regression model alongside other significant predictors of AKI-CPB from a univariable analysis. Results Pulse pressure, body surface area, and pre-operative serum creatinine were significantly associated with the development of AKI-CPB, but the calcium scores were not. For PP, the odds ratio (OR) was 1.062, (95% Wald confidence interval {CI}=1.012 - 1.114). The OR for the calcium score in the aorta was 1.0000 (95% CI=1.0 - 1.0). Conclusions Agatston calcium scores in the renal arteries and infrarenal aorta were not independently associated with AKI-CPB, but arterial stiffening, as indicated by elevated pulse pressure, was predictive of AKI-CPB.

Meeting Faculty Development Needs: Review of Current Resources and Opportunities for Program Development.

This paper will review faculty development focus and programming at the early, mid and late career stages. Topics covered include challenges at each career stage, institutional and national programming currently available for the needs of faculty at that stage, and suggested best practices for development of new career focus and potential programs for each stage.

The RSNA Pulmonary Embolism CT Dataset.

Supplemental material is available for this article.

Communication Strategies and Our Learners.

Communication is vital in healthcare to facilitate the best patient care at all times. During the COVID-19 pandemic, communication has become increasingly crucial, including devising innovative, novel, and effective ways to exchange information in graduate medical education, multidisciplinary teams, and patient care, all which affect our learners. This article will provide a comprehensive review of generational characteristics, including communication preferences. Effective communication strategies and communication challenges with learners (millennial generation) will be discussed in detail.

Primary angiosarcoma of the breast: Case report of a rare vascular tumor.

This is a case report of a woman in her sixth decade of life diagnosed with primary angiosarcoma of the breast using mammography and ultrasound, confirmed with imaging-guided biopsy, and finally treated with surgery and radiation. Imaging studies obtained and discussed include mammography, ultrasonography, and MRI. Further discussion on the presenting symptoms, useful imaging modalities, and treatment options takes place. It is important to consider primary angiosarcoma of the breast, though rare, in any woman presenting with a palpable breast mass and, if feasible, an MRI will be most helpful in the diagnosis of this rare tumor.

Multisite Implementation of Radiology-TEACHES (Technology-Enhanced Appropriateness Criteria Home for Education Simulation).

PURPOSE: After encouraging results from a single-institution pilot, a novel case-based education portal using integrated clinical decision support at the simulated point of order entry was implemented at multiple institutions to evaluate whether the program is scalable and results transferable. The program was designed to fill key health systems' science gaps in traditional medical education curricula, ultimately aiding the transition from volume to value in health care. The module described uses commonly encountered medical vignettes to provide learners with a low-stakes educational environment to improve their awareness and apply curricular content regarding appropriate resource utilization, patient safety, and cost. METHODS: In 2016 and 2017, the team implemented the modules at eight US medical schools. A total of 199 learners participated in this institutional review board-approved study; 108 completed the module, and 91 were in the control group. RESULTS: The module group had higher posttest scores than their control group peers, after controlling for pretest scores (ß = 4.05, P < .001). The greatest knowledge gains were on questions related to chest radiography (22% improvement) and adnexal cysts (20.33% improvement) and the least on items related to pulmonary embolism (0.33% improvement). The majority of learners expressed satisfaction with the educational content provided (70.4%) and an increased perception to appropriately select imaging studies (65.2%). CONCLUSIONS: This program is promising as a standardized educational resource for widespread implementation in developing health systems science curricula. Learners at multiple institutions judged this educational resource as valuable and, through this initiative, synthesized practice behaviors by applying evidence-based guidelines in a cost-effective, safe, and prudent manner.

Isolated presentation of congenital microphthalmia on fetal MRI.

A fetal growth scan was performed on a 34-year-old Caucasian woman, G4P3, with a history of gestational diabetes diagnosed at 32 weeks gestation. The examination revealed an absence of normal left globe with an echogenic mass in its expected location with a rim of surrounding hypoechoic fluid. The right orbit and globe were normal, and no other structural anomalies were identified. Prior to this examination, the patient had a normal anatomic survey and fetal echocardiogram at 20 weeks, however due to fetal positioning there was limited visualization of the orbits on initial scan. Fetal MRI was performed at 36 weeks gestation and confirmed near-complete absence of the left globe with asymmetrically smaller size of the left orbit. Normal right orbit and globe were present, and no additional fetal structural abnormalities were observed. Figure 1 congenital microphthalmia was diagnosed based on the imaging findings, preparing the family and alerting the medical team of appropriate care needed postnatally.

Squamous cell carcinoma arising in a partially ruptured giant mature cystic teratoma: A case report.

Mature cystic teratomas are the most common ovarian germ cell tumors and represent 70% of the benign ovarian tumors occurring in women under age 30. In less than 2% of cases, these tumors can transform into malignancies. Squamous cell carcinoma arises most frequently from these tumors (in 80% of cases). Intra-peritoneal rupture accounts for approximately 1%-2% of cystic teratoma complications with most ruptures occurring either intraoperatively during laparoscopic surgery or due to trauma. This case report describes the common presentation, imaging, and pathologic findings of a mature cystic teratoma with 2 uncommon associated complications.

Tuberculous peritonitis in children: Two case reports highlighting the important role of imaging.

Tuberculous peritonitis is an uncommon extrapulmonary form of Mycobacterium tuberculosis infection, frequently presenting with nonspecific and insidious symptoms. Diagnosis is therefore difficult, unsuspected, and often delayed, especially in the pediatric patient without an obvious history of exposure to the pathogen. This report presents a 9-year-old Hispanic girl and a 3-year-old African American boy presenting with nonspecific and insidious symptoms, such as abdominal pain, distention, and fever in whom computed tomography findings of peritoneal thickening and enhancement, high density ascites, lymphadenopathy, and bowel wall thickening acted as key components in establishing a final diagnosis of the condition. Computed tomography is an important clinical adjuvant in making this difficult diagnosis.

Scrotal sac leiomyoma: Case report of a rare benign scrotal mass.

Leiomyomas are benign mesenchymal tumors, the overwhelming majority of which are located in the uterus. Rare cases arise in other organs, including the scrotum, pelvis, bladder, and spermatic cord. This report evaluates the case of a 37-year-old man with a history of prior left inguinal hernia repair, who presented with a painless right scrotal mass. He first noticed the mass approximately 1 year prior to his initial visit. Subsequent ultrasound of the scrotum demonstrated a 5-cm circumscribed, hypoechoic, mildly vascular extratesticular mass located within the right hemiscrotum. Based on the initial imaging, the differential diagnosis included lipoma, adenomatoid tumor, papillary cystadenoma, leiomyoma, fibrous pseudotumor, sarcoid granuloma, sarcoma (including liposarcoma, rhabdosarcoma, or leiomyosarcoma), lymphoma, and an extranumerary testis. The mass had circumscribed margins, suggesting an encapsulated lesion, and was completely separate from the testicle on ultrasound. Despite this, testicular malignancy was not entirely excluded as a diagnosis, although it was considered far less likely. The patient was definitively treated with surgical excision of the mass. Pathology of the surgical specimen confirmed diagnosis of leiomyoma, a rare scrotal mass.

Radiologic images of an aggressive implant-associated fibromatosis of the breast and chest wall: case report and review of the literature.

Fibromatosis of the breast is a rare benign disease compromising <0.2% of all primary breast tumors. Although the chest wall is a common location, occurrences of implant-associated fibromatosis of the breast are extremely rare; only 33 cases have been reported. We present a case of a 42-year-old female who underwent breast augmentation with silicone breast implants, and 2 years later developed an aggressive implant-associated fibromatosis of the breast and chest wall. On imaging studies, the tumor mimicked breast carcinoma, and despite chemotherapy, the fibromatosis rapidly enlarged and was locally invasive requiring wide surgical excision. Unlike previously reported imaging findings, magnetic resonance imaging revealed an oval circumscribed mass with fringe-like internal architecture. We provide a review of the literature and discuss the imaging features of implant-associated fibromatosis of the breast.

Radiologic presentation of a myofibroblastoma of the adult male breast.

We present the case of a 50-year-old male with bilateral gynecomastia who was incidentally found to have 0.8-cm subareolar mass on computed tomography. Mammographic and sonographic characteristics of the lesion are described as well as a brief historical review of myofibroblastoma, a rare mesenchymal tumor.

Contrast-enhanced Spectral Mammography: Modality-Specific Artifacts and Other Factors Which May Interfere with Image Quality.

RATIONALE AND OBJECTIVES: Contrast-enhanced spectral mammography (CESM) uses full field digital mammography with the added benefit of intravenous contrast administration to significantly reduce false-positive and false-negative results and improve specificity while maintaining high sensitivity. For CESM to fulfill its purpose, one should be aware of possible artifacts and other factors which may interfere with image quality, and attention should be taken to minimize these factors. MATERIALS AND METHODS: This pictorial demonstration will depict types of artifacts detected and other factors that interfere with image acquisition in our practice since CESM implementation. RESULTS: Many of the artifacts and other factors we have encountered while using CESM have simple solutions to resolve them. CONCLUSION: The illustrated artifacts and other factors interfering with image quality will serve as a useful reference to anyone using CESM.

Contrast-enhanced Spectral Mammography: Technique, Indications, and Clinical Applications.

RATIONALE AND OBJECTIVES: Contrast-enhanced spectral mammography (CESM) combines the benefits of full field digital mammography with the concept of tumor angiogenesis. Technique and practical applications of CESM are discussed. MATERIALS AND METHODS: An overview of the technique is followed by a demonstration of practical applications of CESM in our practice. RESULTS: We have successfully implemented CESM into our practice as a screening, diagnostic, staging, and treatment response tool. CONCLUSION: It is important to understand the technique of CESM and how to incorporate it into practice.

Radiological findings of two neoplasms with perivascular epithelioid cell differentiation.

Perivascular epithelioid cell tumors (PEComas) constitute a rare subset of mesenchymal neoplasms classified by the World Health Organization in 2002. We present two cases of PEComas; the first is a cervical PEComa in a 35-year-old woman with no known past medical history who presented with a palpable pelvic mass; the second is an adnexal PEComa in a 39-year-old woman with a history of colitis who presented with abdominal pain and diarrhea. The rarity of these tumors has led to little information about imaging characteristics which we hope these two cases will help expand.

Normal Fetal Long Bone Length from Computed Tomography: Potential Value in the Prenatal Evaluation of Skeletal Dysplasias.

BACKGROUND: The prenatal evaluation of skeletal dysplasias is challenging. Ultrasound (US) has limited sensitivity in evaluating these abnormalities. Low-dose fetal computed tomography (CT) is a helpful adjunct in evaluating the fetus with severe abnormalities, but its use is limited by lack of data on normal fetal bone length. OBJECTIVE: To obtain CT measurements of fetal long bones and to compare published US normative bone length measures to examine their similarity. METHODS: A retrospective search of a radiographic database for gravid patients with CT of the abdomen/pelvis for acute maternal abdomen was performed. Fetal long bone measurements were plotted against gestational age (GA)/standard US measurements. Regression coefficients were calculated (p values <0.05 were considered significant). Bland-Altman plots were constructed to identify any systematic difference between CT and US bone length measures. RESULTS: Twenty-five cases met the inclusion criterion of fetal GA 16-39 weeks. The length of long bones increased with GA, with strong R2 values for each measurement. Plots of CT measurements against published 50th percentile sonographic values for age also showed strong and significant correlations, suggesting that values may be used interchangeably, a conclusion further substantiated by the Bland-Altman analyses. CONCLUSION: A CT database for fetal long bone length is presented which can be used to evaluate the fetus with abnormal bones. Additionally we have established a strong correlation between measured fetal CT long bone values and the published 50th percentile normal values for US, which allows the interpreting radiologist to extrapolate CT measurements to US values in the evaluation of fetal bone length.