CT
A Different Type of Tension Headache: A Case Report of Traumatic Tension Pneumocephalus
DOI: https://doi.org/10.21980/J8DH0GCT head without contrast demonstrated a minimally displaced fracture of the frontal sinuses at the midline underlying his known laceration that involved the anterior and posterior tables of the calvarium. This is seen on the sagittal view and indicated by the blue arrow. There was a small volume of underlying subarachnoid hemorrhage along the falx. There was also extensive pneumocephalus most pronounced along the bilateral anterior frontal convexity associated with the frontal sinus fracture, seen on the axial image and indicated by the red arrow. This pattern of air is commonly referred to as the “Mount Fuji” sign.6 Other intracranial air can also be seen on the sagittal image and is indicated by the white arrow.
Jefferson Fracture and the Classification System for Atlas Fractures, A Case Report
DOI: https://doi.org/10.21980/J88P9CComputed tomography (CT) revealed a burst fracture (Jefferson) of the anterior arch (white arrows) and of the posterior arch (yellow arrows) of the first cervical vertebrae (C1). There was also a fracture of the right lateral mass (blue arrow) of C1 with mild lateral subluxation of the lateral masses (curved arrows).
Using Point-of-Care Ultrasound to Expedite Diagnosis of Necrotizing Fasciitis: A Case Report
DOI: https://doi.org/10.21980/J85051A consultative scrotal ultrasound was performed, which was read as showing a small right hydrocele, small bilateral scrotal pearls, and normal-appearing testes. Although present, there was no mention of subcutaneous air suggestive of NF, seen in figure 1 as punctate hyperechoic foci (arrowhead) with ring-down artifact known as dirty shadowing (arrow). Also, subcutaneous thickening (asterisk) and free fluid (arrow) were seen as shown in figure 2, although their clinical relevance was not recognized in the radiologist's final report. Figure 3 shows an abdominal and pelvic CT that re-demonstrates subcutaneous air in the scrotum and lower abdomen (arrow) as well as fascial thickening of the perineum and free intra-abdominal air. After these images, the patient was transferred to our hospital for further management. Almost immediately after the patient's arrival, POCUS was employed. As seen in figures 4, we were able to identify in just a few minutes extensive subcutaneous air accompanied by dirty shadowing, as well as re-demonstration of subcutaneous thickening, fluid collections, and a right hydrocele. Even without the outside hospital's CT, the sonographic findings were highly suggestive for the diagnosis of NF of the perineum, also known as Fournier’s gangrene.
A Case Report on Detecting Porcelain Gallbladder form Wall-Echo-Shadow Sign on Point-of-Care Ultrasound
DOI: https://doi.org/10.21980/J8164GPoint-of-care ultrasound (POCUS) was performed by the emergency physician. Gallbladder ultrasound (US) should be performed using a curvilinear probe. If the patient’s body habitus does not allow for the use of a curvilinear probe, a phased array probe may be used. To find the gallbladder with ultrasonography, two approaches are commonly used. Many physicians prefer the “subcostal sweep” in which the probe is placed on the xiphoid process in a sagittal plane and swept along the inferior costal margin until the gallbladder is visualized. If this does not adequately locate the gallbladder, the “X minus 7” approach may be used. In this approach, the probe is placed on the xiphoid (X) process in a transverse view and moved 7 centimeters (minus 7) to the patient’s right. This technique is useful for patients with a larger body habitus. If the gallbladder is still not visualized, placing the patient in left lateral decubitus position or asking them to take a deep breath and hold may help the ultrasonographer locate the gallbladder. The US revealed mild hepatic biliary duct dilation with cholelithiasis and sludge, but no additional evidence to suggest cholecystitis. The US image showed a dilated common bile duct at 0.94 cm and calcifications. Visualization of the gallbladder wall is essential in differentiating between a positive wall-echo-shadow (WES) sign and a porcelain gallbladder. While a hypoechoic gallbladder wall is indicative of a WES sign, a hyperechoic wall layer will indicate a calcified gallbladder wall, suggesting a porcelain gallbladder. In image 1, the hyperechoic gallbladder wall can be visualized (white arrow), suggesting the presence of porcelain gallbladder and distinguishing it from a positive WES sign.
Pulmonary Arteriovenous Malformation in a Patient with Suspected Hereditary Hemorrhagic Telangiectasia: A Case Report
DOI: https://doi.org/10.21980/J8M353Initial vital signs were unremarkable, including oxygen saturation of 98% on room air. The patient did not exhibit any signs of respiratory distress, and the lungs were clear to auscultation bilaterally. Labs were obtained, which showed normal hemoglobin at 15.8. Computed tomography (CT) of the chest (Video 1) showed a large left upper lobe arteriovenous malformation (AVM) with large feeding arteries and tortuous dilated draining veins (red arrow) measuring up to 3.8cm. Imaging also demonstrated nonspecific multifocal ground-glass opacities, which may have represented pulmonary hemorrhage (blue outline) from AVM without evidence of contrast extravasation to suggest active bleeding.
Case Report: Not Your Typical Kidney Stone
DOI: https://doi.org/10.21980/J8GD2TThe CT scan demonstrates nephrolithiasis with associated forniceal rupture. Encircled in the yellow outline is fluid, demonstrating a forniceal rupture. The stone is in the proximal aspect of the ureter, as highlighted by the purple arrow.
A Case Report of a Transected Carotid Artery Caused by a Stab Wound to the Neck
DOI: https://doi.org/10.21980/J8BP8MThe post intubation chest x-ray (CXR) showed severe rightward displacement of the trachea (purple arrow). The computed tomography angiogram (CTA) showed transection of the left common carotid artery (LCCA), extensive neck hematoma without extravasation and severe tracheal deviation to the right (blue arrow). The intravenous (IV) contrasted chest computed tomography (CT) image showed a lateral contrast projection from the aortic arch at the level of the isthmus (green and pink arrows). There were no other significant injuries reported on the CT scans of the chest, abdomen and pelvis.
Posterior Sternoclavicular Dislocation: A Case Report
DOI: https://doi.org/10.21980/J8363QChest X-ray revealed an inferiorly displaced right clavicle at the right sternoclavicular joint (blue arrow). A computed tomography angiogram (CTA) of the chest was therefore obtained and revealed a right posterior sternoclavicular dislocation with resultant compression of the left brachiocephalic vein (purple arrow). Even though the right clavicle is displaced, the anatomy of the brachiocephalic vein is such that it is positioned to the right of midline, placing the left brachiocephalic vein posterior to the right clavicle. The right brachiocephalic and common carotid artery were normal in appearance. The CTA also revealed a comminuted fracture of the left anterior second rib at the costochondral junction that had not been previously seen on the x-ray.
Necrotizing Fasciitis and Mediastinitis after Wisdom Tooth Extraction: A Case Report
DOI: https://doi.org/10.21980/J8XW7KComputer tomography (CT) imaging of soft tissues of the neck and of the chest/abdomen/pelvis revealed extensive swelling and subcutaneous air (see red arrows) on the left side of the face and neck extending to the left shoulder, as well as parapharyngeal/retropharyngeal spaces and posterior/superior mediastinum.
Adult Clavicular Fracture Case Report
DOI: https://doi.org/10.21980/J8FM0TThe patient's chest and clavicular radiographs showed a comminuted displaced acute fracture of the right mid-clavicle (green, blue, yellow). The clavicular fracture was also visible on the chest computed tomography (CT). The remainder of his trauma workup was negative for acute findings.