Solitary Metastasis of Colon Adenocarcinoma Mimicking Colloid Cyst of the Third Ventricle.

Metastatic lesions to the choroid plexus, although far less common than colloid cysts, can present very similarly both symptomatically and radiographically. Choroid plexus metastases are most common in the lateral ventricles, however, when they occur in the third and fourth ventricles they may cause obstructive hydrocephalus typical of a colloid cyst lesion. Renal cell carcinoma is the most common primary cancer, but many rare primaries have been reported.

Metastatic Renal Cell Carcinoma to the Cerebrum in a Patient With Lynch Syndrome: A Case Report.

Hereditary nonpolyposis colorectal cancer (HNPCC) or Lynch syndrome is an autosomal-dominant genetic disorder of DNA mismatch repair associated with many forms of cancer, especially colorectal and including renal cell. In this report, we present a case of a patient with a known history of HNPCC whose first presentation of renal cell carcinoma (RCC) was associated with a symptomatic intracranial lesion. After intracranial imaging, resection, and pathologic examination, the lesion was revealed to be of RCC origin.

The Role of Computed Tomography and Real-Time Polymerase Chain Reaction in the Diagnosis and Prognostication of COVID-19.

With the rapid spread of coronavirus disease 2019 (COVID-19) starting in early 2020, there has been much interest in the applicability of radiologic imaging in managing affected patients. From the initial screening to addressing the extent of pulmonary involvement, CT scans provide great value to hospitals overwhelmed by an influx of patients, including those with suspected COVID-19. Because CTs come at a high financial cost, lower cost real-time polymerase chain reaction (RT-PCR) COVID-19 tests are critical due to their ability to identify asymptomatic carriers and properly handle patients during the ongoing pandemic.

Predicting in-hospital mortality after traumatic brain injury: External validation of CRASH-basic and IMPACT-core in the national trauma data bank.

Background: Traumatic brain injury (TBI) prognostic prediction models offer value to individualized treatment planning, systematic outcome assessments and clinical research design but require continuous external validation to ensure generalizability to different settings. The Corticosteroid Randomization After Significant Head Injury (CRASH) and International Mission on Prognosis and Analysis on Clinical Trials in TBI (IMPACT) models are widely available but lack robust assessments of performance in a current national sample of patients. The purpose of this study is to assess the performance of the CRASH-Basic and IMPACT-Core models in predicting in-hospital mortality using a nationwide retrospective cohort from the National Trauma Data Bank (NTDB).