A 40-Year-Old Man With Multiple Pulmonary Nodules and Mediastinal Lymphadenopathy With Positive Anti-Neutrophil Cytoplasmic Antibody Reveals an Unexpected Diagnosis.

CASE PRESENTATION: A 40-year-old man with no significant medical history presented to the ED with a 2-day history of right-sided chest pain accompanied by night sweats and chills. These symptoms were accompanied by a dry, nonproductive cough without hemoptysis. The patient worked as an air traffic controller, with a side business of buying, renovating, and selling houses. He takes part in the remodeling work himself but denies any exposure to animal droppings, bird droppings, or mold. He denied chronic sinus disease, rash, or arthralgias. A resident of Platte City, Missouri, he had recently traveled to Salt Lake City, Utah. At the time of presentation, the patient denied any fever or shortness of breath. He had no history of nicotine, alcohol, or illicit substance use and denied any recent weight loss.

Navigational bronchoscopy specimens and PD-L1 expression: a retrospective study.

Background: Additional data regarding the ability of navigational bronchoscopy (NB) to provide sufficient material for programmed death-ligand 1 (PD-L1) expression is needed. We performed a retrospective study of NB cases at our institution to determine performance of NB in providing adequate samples for PD-L1. Methods: We conducted a retrospective review of all consecutive NB procedures performed at our institution from January 1, 2018 to August 4, 2020 that involved biopsies of a lung nodule/mass with a diagnosis of non-small cell lung cancer (NSCLC). The primary outcome was adequacy of material for PD-L1 testing. All procedural, demographic, and diagnostic data were collected. The association of factors with PD-L1 adequacy was evaluated with rate ratios (RR) using modified Poisson regression models with robust standard errors. Results: A total of 102 NB procedures with a diagnosis of NSCLC were performed over a 2-year period. The mean [standard deviation (SD)] nodule size was 25.0 [interquartile range (IQR), 18.0-32.0] mm and 57.8% (59/102) had a bronchus sign; 73% (68/93, 9 missing data) of samples were adequate for PD-L1 testing. Radial endobronchial ultrasound (REBUS) was utilized in 99% (101/102) of biopsies; a concentric or eccentric view was observed in 78.2% (79/101) and 16.8% (17/101), respectively. Transbronchial biopsy (TBBX) was performed in 92.2% (94/102). Only 4% (4/102) of cases required additional biopsies with either computed tomography (CT) guided transthoracic or surgical biopsies due to insufficient bronchoscopy tissue. No factors were predictive of PD-L1 adequacy in regression models. Conclusions: NB demonstrated good performance in obtaining adequate samples for PD-L1 testing. Only 4% of patients required additional procedures for more tissue when clinically indicated. However, additional study is needed to validate these results against surgical resection specimens.

Gastroesophageal Reflux Disease-Associated Chronic Cough: A Population-Based Analysis of Patient Presentations in the United States.

Gastroesophageal reflux disease is an extremely prevalent illness in the United States; however, clinicians report that its association with chronic cough is often overlooked and undiagnosed. We used the CERNER Health Facts® database to analyze the statistical prevalence. Our findings indicate that there is a minority of patients who are untreated for this common complaint. We propose considering this on the differential diagnosis and following current treatment guidelines with proton pump inhibitors to effectively treat this complaint.

A Rare Case of Malignant Pleural Mesothelioma in a Young Healthy Male Without Asbestos Exposure.

Malignant pleural mesothelioma (MPM) is a highly aggressive malignant tumor that arises from mesothelial cells of pleural cavity. The main risk factor for MPM is asbestos exposure with most cases discovered in elderly males after a long latency period. However, here we report a rare case of MPM diagnosed in a healthy young male patient without significant asbestos exposure. We report the case of an otherwise healthy 47-year-old male who presented with one week of exertional dyspnea and chest pain. Chest X-ray showed unilateral large pleural effusion. Chest CT scan revealed confluent right hilar mass and pleural thickening. Pleural fluid analysis showed exudative features. Cytology was negative for malignant cells. Core tissue biopsy showed features of epithelioid mesothelioma. Although most cases of MPM have been reported in elderly male patients with significant asbestos exposure, more research is needed to explain the pathogenesis of MPM in young patients without asbestos exposure.

Flaccid Paralysis with Hyponatremia: Think Guillain-Barre Syndrome.

Guillain-Barre syndrome (GBS) is the most common cause of flaccid paralysis in affected patients. Here we present a case of GBS presenting with flaccid paralysis as well as hyponatremia. The association of hyponatremia in GBS is discussed, as well as other potential causes and risk factors.

Computer-Based versus Paper-Based Insulin Infusion Algorithms in Diabetic Ketoacidosis.

BACKGROUND: Paper-based and computer-based insulin infusion algorithms facilitate appropriate glycemic therapy. The data comparing these algorithms in the management of diabetic ketoacidosis in the intensive care unit (ICU) setting are limited. We aimed to determine the differences in time to diabetic ketoacidosis resolution and incidence of hypoglycemia between computer and paper-based insulin infusion. METHODS: Single-institution retrospective review of patients admitted to the ICU with diabetic ketoacidosis between 4/1/2015 and 7/20/2018. Our institution introduced computer-based insulin infusion (Glucommander) to the intensive care unit on 3/28/2016. Patients were grouped into either paper-based group (preintervention) or a computer-based group (postintervention). Summary and univariate analyses were performed. RESULTS: A total of 620 patients (paper-based=247; computer-based=373) with a median (IQR) age of 40 (26-56) years were included; 46% were male. Patients in the computer-based group were significantly older (p=0.003); otherwise, there were no significant differences in gender, race, body mass index and HbA1c. The mean (±SD) time to diabetic ketoacidosis resolution in the computer-based group was significantly lower than the paper-based group (p=0.02). The number of patients in the paper-based group who developed severe hypoglycemia (<50 mg/dl) was significantly higher {8% vs 1%; p<0.0001}. CONCLUSION: Our analyses demonstrate statistically significant decreases in time to DKA resolution and hypoglycemic events in DKA patients who were managed using a computer-based insulin infusion algorithm providing a more effective and safer option when compared to paper-based insulin infusion.

Vaping Associated Lung Injury (EVALI): An Explosive United States Epidemic.

As of November 5, 2019, there have been 2051 cases of e-cigarette, or vaping, product use associated lung injury (EVALI), with 39 deaths reported in the United States, over four months. The rapidly increasing popular habits of vaping and e-cigarette use has suddenly turned deadly in the United States. This epidemic of vaping-associated illness appears to be limited to the United States with few reported cases and no deaths from the rest of the world.