X-Ray

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Talonavicular Dislocation

Joseph Zakaria, BS* and Jonathan Peña, MD*

DOI: https://doi.org/10.21980/J8PG91Issue 3:4[mrp_rating_result]
The X-rays were significant for a subtalar dislocation. The calcaneus (red) is laterally displaced with respect to the talar head (orange), and the white lines indicate the normal articular surface. Additionally, there was a talonavicular dislocation, as seen in the fourth image: the talus (green) and navicular bone (purple) overlapping suggests a dislocation. In a normally aligned foot, the boundaries of the two bones create a point of articulation.
OrthopedicsVisual EM
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Endocarditis

Sara Arastoo, BS* and Sari Lahham, MD, MBA*

DOI: https://doi.org/10.21980/J8JP73Issue 3:4[mrp_rating_result]
Upright frontal radiograph of the chest demonstrated large pleural effusion on the left and moderate pleural effusion on the right as shown by the visible menisci on both sides (red arrows) with diffuse bilateral nodular densities (yellow dotted lines), consistent with septic pulmonary emboli. Computed tomography (CT) of the chest demonstrated multiple scattered lung nodules bilaterally containing internal foci of air cavitation (green dotted lines).
Infectious DiseaseCardiology/VascularVisual EM
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Subcutaneous Emphysema After Chest Trauma

Ronald Goubert, BS* and Alisa Wray, MD, MAEd*

DOI: https://doi.org/10.21980/J8864NIssue 3:4[mrp_rating_result]
Plain film anteroposterior (AP) radiography of the chest shows left-sided subcutaneous emphysema (red arrow) with overlapping muscle striations of the pectoralis major (green arrow). After chest tube placement (blue arrow), AP chest radiography shows persistent left-sided subcutaneous emphysema (red arrow). CT of the chest shows pneumomediastinum (blue arrow), left apical pneumothorax (pink arrow), and subcutaneous emphysema (red arrow) at the level of T2. At the level of T6, rib fractures can be visualized on the CT (yellow arrow). At the level of T8, left sided pneumothorax is also seen (pink arrow) as the absence of lung tissue on CT.
TraumaRespiratoryVisual EM
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An Unusual Case of Hematemesis

Amanda Amen, BA*, Jane Xiao, MD^, Julie Parks-Bortel, MD† and Shanna Jones, MD†

DOI: https://doi.org/10.21980/J84H00Issue 3:4[mrp_rating_result]
The patient’schest X-ray revealed a prominent mediastinum and opacification in the left middle and lower lung fields. The CT showed an aortic aneurysm extending from the thorax to the abdomen with rupture near T7 (blue arrow). It also showed periaortic hemorrhage with active extravasation (green arrow) likely secondary to a penetrating ulcer and bilateral pulmonary opacities concerning for hemothorax (pink arrow).
Cardiology/VascularVisual EM
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Croup

Victor Cisneros, MD, MPH*, Joseph Zakaria, BS* and Wirachin Hoonpongsimanont, MD*

DOI: https://doi.org/10.21980/J8W05JIssue 3:4[mrp_rating_result]
The anteroposterior X-ray reveals the classic steeple sign (blue outline) indicative of subglottic edema leading to tracheal narrowing, consistent with croup. The lateral x-ray shows narrowing of the subglottic region (green outline and arrows).
PediatricsRespiratoryVisual EM
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Don’t Forget the Pacemaker – A Rare Complication

Amanda Esposito, MD*, Kenneth Rapp, MD* and Albert Ritter, MD*

DOI: https://doi.org/10.21980/J8GS7HIssue 3:4[mrp_rating_result]
The ECG demonstrated the presence of pacemaker spikes without appropriate capture (green arrows) and a ventricular escape rhythm which can be identified by an absence of P waves prior to the QRS complex (purple arrows). The portable chest X- demonstrated displaced pacemaker leads (red arrows) that were coiled around the pulse generator (blue arrow).   
Cardiology/VascularVisual EM
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The Role of Chest X-Ray and Bedside Ultrasound in Diagnosing Pulmonary Bleb versus Pneumothorax

Mohamad Moussa, MD* and Venkat Reddy Vaddamani, BS*

DOI: https://doi.org/10.21980/J8MP7QIssue 3:3[mrp_rating_result]
The patient was evaluated with bedside ultrasound for concern of possible pneumothorax. Imaging of the left lung with M-mode demonstrated a “sea shore” sign showing a wavy pattern below the pleural line caused by lung sliding as well as “comet tail” artifact caused by from the deep pleura. However, there was no lung sliding on the right shown by a lack of “comet tail” artifact and a “bar code” sign where M-mode shows straight lines throughout the image, this is caused by lack of motion below the pleura. This lack of lung sliding is consistent with possible pneumothorax or bleb.  A two-view chest X-ray (CXR) revealed absent lung parenchyma in the right lung similar to a large pneumothorax (see red outline). Electronic medical record chart review revealed previous CXRs with similar findings. This patient was determined to have an acute COPD exacerbation with chronic blebs, but no pneumothorax.
RespiratoryVisual EM
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Bilateral Tibia/Fibula Fractures in Automobile versus Pedestrian Accident

Kevin Roy, BS* and Jonathan Peña, MD*

DOI: https://doi.org/10.21980/J8C636 Issue 3:3[mrp_rating_result]
Plain film shows severely comminuted and displaced mid tibia/fibula fractures of bilateral lower extremities (red arrows) and comminuted right fibular head (blue arrow) and proximal shaft fracture (yellow arrow).
OrthopedicsVisual EM