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

A 70-year-old female fell off her bed while changing a light bulb and complains of left shoulder pain. What is the diagnosis? • Xray of the Week Figure 1. Non-contrast CT of the cervical spine. What is the diagnosis? Figure 2. Non-contrast CT of the cervical spine (sagittal reconstructions): Bilateral facet dislocation at C7-T1 with anterior subluxation of C7 on T1. The inferior facets of C7 are locked anterior to the superior facets of T1 (yellow and green arrows), with ante

An 74-year-old male with chronic low back pain and progressive lower extremity weakness. What is the diagnosis? • Xray of the Week Figure 1. Non-contrast CT of the lumbar spine. What is the diagnosis? Figure 2. Non-contrast CT of the lumbar spine (axial, sagittal, and coronal reconstructions): Central pattern of arachnoiditis ossificans demonstrating dagger-like ossification within the central spinal canal at the L5 level (red arrows). The linear, hyperdense bony bar courses

Hyphema refers to hemorrhage into the anterior chamber of the eye, most often secondary to blunt or penetrating trauma. On non-contrast orbital CT, hyphema appears as a hyperdense collection filling or layering in the anterior chamber, anterior to the lens.

59 yo male who was assaulted and sustained blunt trauma to the left orbit. • Xray of the Week Figure 1. What are the important findings in each image. Figure 2. A: Coronal CT image demonstrates normal contour of the right globe (green arrow) and a shrunken left globe (orange arrow), which is suggestive of globe rupture. B: Axial CT image demonstrates normal contour of the right globe (green arrow) and abnormal contour left globe (orange arrow), suggestive of globe rupture. N

79 year old male. Back pain and lower extremity weakness after a fall • Xray of the Week Figure 1.What are the important findings in each...

59-year-old male with trauma. Diagnosis? • Xray of the Week Figure 1. What are the important findings? Figure 2. A: Sagittal CT image...

42 year old male with headache and history of cerebral palsy. What is the diagnosis? • Xray of the Week Figure 1. Head CT. What are the...