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Teenager hit by a car while riding their bike

Radiograph and CT of secondary accessory ossification center of vertebral body mimicking cervical spine fracture
Lateral radiograph of the cervical spine (left) shows a small ossific fragment anterior and superior to the C6 vertebral body. There is no prevertebral swelling and the alignment of the cervical spine is normal. Sagittal CT without contrast of the cervical spine (right) shows that the ossific fragment is well corticated.

The diagnosis was a secondary ossification center of the cervical spine mimicking a cervical spine fracture.

Teenager with a C5-C6 fracture dislocation after a motor vehicle accident

MRA of vertebral artery dissection after trauma
MRA with contrast of the neck in AP (left) and left oblique (middle) and right oblique (right) projections shows the right vertebral artery arises from the right subclavian artery and courses normally to where it enters the basilar artery. The left vertebral artery arises from the left subclavian artery but then is only faintly visualized along its course until it reconstitutes where it enters the basilar artery.

The diagnosis was occlusion of the left vertebral artery from C2 to C7 due to dissection of the left vertebral artery.

School ager post intubation

CXR of endotracheal tube in left mainstem bronchus
CXR AP (left) shows the tip of the endotracheal tube projecting over the left mainstem bronchus. CXR AP (middle) shows the tip of the endotracheal tube projecting over the right mainstem bronchus. CXR AP (right) shows the tip of the endotracheal tube projecting above the carina.

The diagnosis was endotracheal tube malfunction with the endotracheal tube placed initially in the left mainstem bronchus, then in the right mainstem bronchus and finally in the trachea above the carina.

School ager with a ventriculoperitoneal shunt and new neck pain

Radiograph of breakage of VP shunt tubing in the neck
Lateral radiograph of the skull taken 7 years ago (above) shows the VP shunt to be intact inferior to the lucent shunt reservoir. Current lateral radiograph of the skull (below) shows a discontinuity in the ventriculoperitoneal shunt inferior to the lucent shunt reservoir due to a breakage of the shunt tubing.

The diagnosis was ventriculoperitoneal shunt malfunction in the form of a breakage of the tubing in the neck.

School ager with a myelomeningocele who is insensate in the lower extremities who had left varus derotation osteotomy surgery 2 months ago and now has new left thigh swelling

Radiograph of congenital insensitivity to pain resulting in exuberant periosteal reaction
AP (left) and lateral (right) radiographs of the left femur show a normal post operative appearance to the left hip plate and screws. There is exuberant periosteal reaction present along the femur. There is an irregular lucency in the distal femoral metaphysis.

The diagnosis was congenital insensitivity to pain resulting in exuberant periosteal reaction from an undiagnosed nondisplaced distal femur fracture.

Teenager whose ventriculoperitoneal shunt was revised 1 month ago who now has a new headache and redness along the anterior abdominal wall.

CT of a CSFoma / cerebrospinal fluid pseudocyst in the anterior abdominal wall
Axial (above) and coronal (below) CT with contrast of the abdomen shows a round low density fluid collection in the subcutaneous tissues of the right anterior abdominal wall with inflammatory changes noted around the fluid collection. In the center of the fluid collection is a coiled ventriculoperitoneal shunt.

The diagnosis was ventriculoperitoneal shunt malfunction in the form of a CSFoma in the anterior abdominal wall due to VP shunt tip migration out of the abdomen.

Teenager who was hit hard during a hockey game who now has right chest pain

CT of sternoclavicular joint dislocation
3D CT without contrast of the chest viewed anteriorly (above) shows normal alignment of the left sternoclavicular joint and malalignment of the right sternoclavicular joint. 3D CT viewed from above (below) shows the right clavicular head is displaced posteriorly to the manubrium of the sternum when compared to the left clavicular head.

The diagnosis was right posterior sternoclavicular joint dislocation.

School ager status post left chest tube placement with bloody output from the chest tube and a decreased hematocrit after chest tube placement

CT of chest tube puncturing an intercostal blood vessel causing active bleeding
Arterial (above) and venous (below) phase axial CT with contrast of the chest shows a large hematoma inside the ribs at the chest tube insertion site. There is also a blush of contrast near the chest tube that increases on delayed imaging representing active bleeding.

The diagnosis was a chest tube malfunction in the form of a chest tube puncturing an intercostal blood vessel causing active bleeding.

School ager with a ventriculoperitoneal shunt with vomiting, diplopia, abdominal pain and newly dilated lateral ventricles

CT of CSFoma / cerebrospinal fluid pseudocyst
Axial CT with contrast of the abdomen (above) shows the VP shunt anteriorly in the abdomen coursing through a multiloculated fluid collection on the left side of the abdomen. Coronal CT (below left) shows multiple dilated loops of proximal small bowel while the sagittal CT (below right) shows the fluid collection to have at least 3 locules.

The diagnosis was a ventriculoperitoneal shunt malfunction in the form of a CSFoma.