A 15-year-old female Gymnastics injury. Diagnosis? • Radiology Case of the Week Figure 1. A 15-year-old female Gymnastics injury. Diagnosis? Figure 2. A. Cross-table lateral radiograph of the left knee. The patella (red arrows) is projected over the anterior femoral condyles (yellow arrow). B. Anteroposterior radiograph of the left knee. The patella (red arrows) is displaced laterally and lies beside the lateral femoral condyle (yellow arrow). C. Axial patellofemoral view of

A 58-year-old male, asymptomatic. Identify the indicated structures and state the potential life-threatening complication. • Radiology Case of the Week Figure 1. Name the anatomy and potential life-threatening complication. Figure 2. A. Axial CT of the chest. The right-sided aortic arch lies to the right of the air-filled trachea (orange arrow), with the esophagus (blue arrow) situated immediately posterior to the trachea. An aberrant left subclavian artery (red arrow) arises

A 23-Year-Old female at First-Trimester Ultrasound. Diagnosis? • Radiology Case of the Week Figure 1. Transabdominal first-trimester pelvic ultrasound. 23-year-old patient presenting with vaginal bleeding: Diagnosis? Figure 2. A. Magnified sagittal ultrasound of the cystic structure shows a thin, complete outer wall (red arrow) and an internal septation (yellow arrow) crossing the cyst; ultrasound calipers measure 1.6 x 1.2 cm. Fetal pole (green arrow) is seen with the cysti

Adolescent with Chronic Neck Pain and Suboccipital Discomfort: Diagnosis? • Xray of the Week Figure 1. CT images of the cervical spine (A) sagittal view and (B) coronal view. What is the important finding on this CT scan? Figure 2. A. Sagittal CT shows a small, round, well-corticated ossicle (yellow arrow) representing the os odontoideum separated from the underlying body of C2 (green arrow). Note the smooth, radiolucent gap between the body of C2 and the os odontoideum (red

Trauma due to motor vehicle collision. Diagnosis? • Xray of the Week Figure 1. CT images of the cervical spine (A) sagittal view and (B) coronal view. What is the important finding on this CT scan? Figure 2. CT scan of a Type I dens fracture. Red arrows point to the fracture line at the tip of the dens. Figure 3. Anderson and D’Alonzo dens fracture classification system. Diagram by Neal Joshi. Type I is an oblique avulsion fracture involving the upper tip of the dens, usual

Traumatic diaphragmatic rupture is an uncommon but important complication of thoracoabdominal trauma that may be difficult to recognize clinically. Awareness of characteristic imaging findings, particularly on multidetector CT, is essential for prompt diagnosis and appropriate management, helping to reduce complications associated with delayed or missed injury.

Conventional osteosarcoma typically appears as an aggressive metaphyseal lesion with mixed lytic and sclerotic components, cortical destruction, an ill-defined zone of transition, mineralized osteoid matrix, and an associated soft-tissue mass. Aggressive periosteal reactions, including sunburst-type spiculation and a Codman triangle, may occur.

Dislodged leadless pacemaker within the left pulmonary arterial circulation. Frontal chest radiograph demonstrates the radiopaque leadless pacemaker projecting over the left hilar region, rather than its expected position within the right ventricle. Axial CT image confirms the leadless pacemaker within the left pulmonary arterial circulation.