Trauma on the high seas: an overview of recreational water use injuries.

Recreational water use (RWU) injuries span from superficial lacerations to even death. Given the global popularity of RWU, radiologists should be aware of the common mechanisms and key imaging findings related to injuries in this setting. The goal of this article is to depict common RWU injuries and their emergent radiographic findings, which may have both important surgical and management implications. We present a broad review with case illustrations of these injuries seen at our level 1 trauma center showing the breadth of injury that can occur, general mechanisms and sample imaging findings.

'It's all foreign to me': how to decipher gastrointestinal intraluminal foreign bodies.

In evaluating the gastrointestinal tract, whether in the emergency room setting, the inpatient setting or the outpatient setting, the radiologist may encounter a myriad of intraluminal radio-opaque, non-anatomic entities. It is the radiologist's role to distinguish between true foreign bodies and medical paraphernalia. Further, the later must be evaluated for proper positioning vs. improper, potentially detrimental positioning. While many foreign bodies from the community may be distinctly familiar to the radiologist, the large variety of medical tools in existence may not be. Furthermore, many medical devices are designed to transiently traverse, or interact with the gastrointestinal tract, requiring the radiologist to become familiar with their natural history. We explore a select group of common and uncommon intraluminal foreign bodies and will divide them into medical paraphernalia that are properly positioned; medical paraphernalia that are in abnormal locations and miscellaneous foreign bodies from the community. For each medical tool, we will discuss its development and medical utility, natural history as it relates to the gastrointestinal tract, optimal positioning as assessed radiologically, malpositioning, and subsequent complications. A small selection of unusual foreign bodies from the community will be presented. Finally, a selection of medical conditions which produce symptoms due to acquired intraluminal objects will be reviewed.

Sharp recanalization of CBD occlusion in patient with second orthotropic liver transplant with cocoon syndrome.

Biliary complications after orthotopic liver transplant (OLT) remain one of the primary causes of morbidity and mortality in liver transplant recipients with an approximate incidence between 5% and 32%. Given the limited supply of hepatic grafts, one of the most feared outcomes as a result of biliary complications is acute and or chronic graft failure. Biliary complications include leaks, biliary stasis, and stone formation, sphincter of Oddi dysfunction, recurrence of biliary disease (primary sclerosing cholangitis and primary biliary cirrhosis), and biliary strictures/obstruction. Overwhelmingly, the most common complication in hepatic transplantation is biliary stricture formation accounting for more than 50%. Currently, the mainstay of therapy as it pertains to biliary strictures/obstruction includes endoscopic retrograde cholangiography-guided therapy, percutaneous transhepatic cholangiography-guided therapy, or surgical revision/retransplantation. We present a case of biliary obstruction in a patient with a second liver transplant complicated by Cocoon Syndrome managed via sharp recanalization of CBD occlusion and placement of an endoscopic biliary Viabil stent.

Cybersecurity in radiology: Access of public hot spots and public Wi-Fi and prevention of cybercrimes and HIPAA violations.

OBJECTIVE: The purpose of this article is to review the steps that can be taken to ensure secure transfer of information over public and home networks, given the increasing utilization of mobile devices in radiology. CONCLUSION: With the rapid technologic developments in radiology, knowledge of various technical aspects is crucial for any practicing radiologist. Utilization of mobile devices, such as laptops, tablets, and even cellular phones, for reading radiologic studies has become increasingly prevalent. With such usage comes a need to ensure that both the user's and the patient's private information is protected. There are several steps that can be taken to protect sensitive information while using public networks. These steps include being diligent in reviewing the networks to which one connects, ensuring encrypted connections to web-sites, using strong passwords, and using a virtual private network and a firewall. As the role of information technology in modern radiology practice becomes more critical, these safety mechanisms must be addressed when viewing studies on any mobile device.

Extended outlook: description, utilization, and daily applications of cloud technology in radiology.

OBJECTIVE: The purpose of this article is to discuss the concept of cloud technology, its role in medical applications and radiology, the role of the radiologist in using and accessing these vast resources of information, and privacy concerns and HIPAA compliance strategies. CONCLUSION: Cloud computing is the delivery of shared resources, software, and information to computers and other devices as a metered service. This technology has a promising role in the sharing of patient medical information and appears to be particularly suited for application in radiology, given the field's inherent need for storage and access to large amounts of data. The radiology cloud has significant strengths, such as providing centralized storage and access, reducing unnecessary repeat radiologic studies, and potentially allowing radiologic second opinions more easily. There are significant cost advantages to cloud computing because of a decreased need for infrastructure and equipment by the institution. Private clouds may be used to ensure secure storage of data and compliance with HIPAA. In choosing a cloud service, there are important aspects, such as disaster recovery plans, uptime, and security audits, that must be considered. Given that the field of radiology has become almost exclusively digital in recent years, the future of secure storage and easy access to imaging studies lies within cloud computing technology.

The Emerging Role of FDG PET/CT in Diagnosing Endocarditis and Cardiac Device Infection.

Infective endocarditis and cardiac implantable electronic device infection (CIEDI) have witnessed an increasing incidence in clinical practice and associated with increasing health care expenditure. Expanding indications of CIED in various cardiovascular conditions have also contributed to the surge of these infections. Early diagnosis of these infections is associated with a favorable prognosis. Given the lack of a single definitive diagnostic method and the limitations of echocardiography, which is considered a central diagnostic imaging modality, additional imaging modalities are required. Recent studies have highlighted the diagnostic utility of FDG PET and CT. In this review article, we discuss the existing limitations of echocardiography, acquisition protocols of PET/CT, and indications of these advanced imaging modalities in infective endocarditis and CIEDI diagnosis.

Abnormal MIBG uptake in a neuroblastoma patient with right upper lobe atelectasis.

A 3-month-old boy with a history of an abdominopelvic neuroblastoma presented 1 week after tumor resection for a routine follow-up 123-I Meta-iodobenzylguanidine (MIBG) scan to assess for residual mass. The study demonstrated abnormal radiotracer uptake in the right upper lobe, which correlated on the SPECT/CT to an area of airspace consolidation thought to be secondary to atelectasis. To the best of our knowledge, there is one published case of MIBG radiotracer uptake in the lung correlating with pneumonia; however, there are no reported cases to date in the literature of focal pulmonary MIBG uptake corresponding to atelectasis.

Risk-adapted chemoimmunotherapy using brentuximab vedotin and rituximab in children, adolescents, and young adults with newly diagnosed Hodgkin's lymphoma: a phase II, non-randomized controlled trial.

BACKGROUND: Cure rates for Hodgkin's lymphoma are excellent, but excess short-term and long-term morbidities from treatment remain a concern. Immunotherapy targeting both tumor antigens and the immunosuppressive tumor microenvironment in children, adolescents, and young adults with Hodgkin's lymphoma may improve early response rates and eliminate toxic chemotherapy and radiation, thus minimizing toxicity. We conducted a phase II study to evaluate the safety and overall response rate of brentuximab vedotin and rituximab in combination with risk-adapted chemotherapy in children, adolescents, and young adults with newly diagnosed classic Hodgkin's lymphoma (cHL). METHODS: This is a prospective, phase II, non-randomized, risk-assigned study. Patients were treated and evaluated between 2012 and 2020. Eligible patients were aged ≥1 and ≤30 years old with advanced stage, intermediate-risk, and high-risk newly diagnosed cHL. Patients received four or six cycles of brentuximab vedotin (1.2 mg/kg), doxorubicin (25 mg/m2), vinblastine (6 mg/m2), dacarbazine (375 mg/m2), and rituximab (375 mg/m2). Early response was evaluated following two cycles of therapy. Involved field radiotherapy (IFRT) was restricted to high-risk patients with both bulky disease and slow response or those not in complete response at the end of chemoimmunotherapy. RESULTS: Thirty patients were enrolled, with a median age of 15 years (4-23). There were 18 intermediate-risk and 12 high-risk patients. Toxicities included grade III mucositis (3%), infusion reaction (3%), and peripheral neuropathy (6%). There was a 100% complete response rate on completion of chemoimmunotherapy. Eighteen patients (60%) achieved a rapid early response. Four patients (13%) required IFRT. The 5-year event-free and overall survival rates were 100%, with a median follow-up of 62 months (18-105). CONCLUSIONS: Immunotherapy with brentuximab vedotin, rituximab, and risk-adapted chemotherapy is safe in children, adolescents, and young adults with newly diagnosed cHL. We have demonstrated 100% complete response and 100% event-free and overall survival rates at a median 5-year follow-up, with a significant reduction in use of more toxic chemotherapy and IFRT. A larger cohort is required to confirm these preliminary findings. TRIAL REGISTRATION NUMBER: NCT02398240.

Carotidynia Versus Transient Perivascular Inflammation of the Carotid Artery (TIPIC) Syndrome: Finding Common Ground.

Carotidynia remains mired in controversy. Whether to identify this self-limiting unilateral neck pain as a distinct clinical entity or a diagnostic sign associated with a variety of conditions remains a topic of ongoing debate. Adding to the discussion is the occasional finding on imaging studies of a transient inflammatory process surrounding the carotid artery in a number of individuals who present with unilateral neck pain. Although some use carotidynia as the designation of choice by which to identify this inflammatory process, the acronym TIPIC (transient perivascular inflammation of the carotid artery) syndrome is being touted as a far more descriptive and less contentious alternative. Having TIPIC syndrome replace carotidynia, however, need not necessarily signal the latter's outright elimination as some have advocated. When used as a diagnostic sign, carotidynia provides an appreciation of the many conditions that may be associated with idiopathic unilateral neck pain.

Rapid Nuclear Medicine Blood Volume Analysis for Emergency Assessment.

Assessment of fluid status can play a critical role in the diagnosis and management of emergent conditions such as trauma, shock, decompensated heart failure, syncope, and hypertension. Unfortunately, common methods are all qualitative and/or indirect, and often inaccurate. With the recent introduction of a modernized method of nuclear medicine blood volume analysis (NM-BVA), offering results in 90 min or less as well as improved precision and ease of performance, this decade-old technique is for the first time a viable tool in the emergent setting. In this review, we discuss the history of NM-BVA, the modern method, and our institution's experience implementing this method.

Making Sense of MACRA: A Guide for Diagnostic Radiologists.

The Medicare Access and CHIP Reauthorization Act of 2015 was signed into law on April 16, 2015, fundamentally altering the way clinicians are reimbursed for the treatment of Medicare patients starting in 2017. Under this new pay-for-performance model, reimbursement will be tied to multiple metrics related to quality and cost of care. A scaled scoring system will require providers to compete for positive reimbursement adjustments, while also penalizing poor performers with negative adjustments. A firm understanding of this new system will be essential for all physicians looking to maximize their reimbursement, particularly diagnostic radiologists and members of other highly focused fields where special considerations lead to alterations in the scoring system.

Compartment syndrome caused by computed tomography contrast infiltration seen on a Tc-99m methylene diphosphonate bone scan.

A 72-year-old man was hospitalized for transurethral resection of bladder cancer. Two days after the procedure, the patient continued to have gross hematuria and a computed tomography (CT) scan of the abdomen and pelvis with intravenous contrast was performed to check the integrity of the resection site. Later that day, the patient underwent technetium-99m methylene diphosphonate (MDP) bone scintigraphy to investigate the possibility of bone metastasis. The bone scan showed no signs of metastasis but did reveal increased uptake of the left hand and forearm on the opposite side of the injection site.

Demonstration of a perihepatic abscess communicating with a fistula from the small bowel on hepatobiliary imaging.

Abscess formation after abdominal surgery is not an uncommon complication. It is much less common for a collection to be the result of a fistulous tract from the bowel. We describe a patient who underwent a Tc-99m hepatobiliary (Choletec) scan for the workup of a perihepatic abscess, which confirmed the presence of a fistulous tract from the small bowel to a perihepatic collection.