Cardiac
GI
Bone
GU
Neuro
Peds
Faculty
Student
Quizzes
Image DDX
Mobile
  Misc
Videocasts

 

 

Case of the Week 344




What's the most likely diagnosis?

  • 12 year-old with pain in the knee after a fall



Left Knee-AP Radiograph

  1. Salter I fracture of tibia
  2. Fracture of the fibular head
  3. Osteosarcoma
  4. Benign cortical defect
  5. Dislocated patella

Additional Image - Left Knee-Lateral Image

 

Additional Image

.

.

Lateral image of knee

.


Answer:

.


4. Benign Cortical Defect

.

.

More (Click Discussion Tab)


Benign Cortical Defect

General Considerations

  • Also called a non-ossifying fibroma or fibrous cortical defect
    • Non-ossifying fibroma frequently reserved for lesions > 2cm in size in older children
  • Usually arises in metaphysis of distal femur or tibia
  • Solitary lesion (75%) or multiple (25%)
  • Most commonly seen in children 2-15 years of age
  • May be secondary to a prior trauma injury (traction) as they tend to occur at sites of insertion of tendons and ligaments

    More ...


    .

    This Week
    12 year-old with pain in the knee after a fall
     
    A review of some of the "most commons" in Gastrointestinal Radiology presented in flashcard format; can be used as either an audio only or audio/video podcast
     
    A trim mobile version for your PDA or internet-enabled smartphone with handy lists of differential diagnoses, most commons and more
     
    Key points on recognizing the most common fractures and dislocations
     
    Basic CT imaging of the brain focusing on the findings of cerebrovascular accidents
     
    The top diagnostic imaging diagnoses that all medical students should recognize according to the Alliance of Medical Student Educators in Radiology
     
    Recognizing normal and  key abnormal intestinal gas patterns, free air and abdominal calcifications
     
    Some of the fundamentals of interpreting chest images
    LearningRadiology.com
    is an award-winning educational website aimed primarily at medical students and radiology residents-in-training, containing  lectures, handouts, images, Cases of the Week, archives of cases, quizzes, flashcards of differential diagnoses and “most commons” lists, primarily in the areas of chest, GI, GU cardiac, bone and neuroradiology.