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QUESTION: What’s The Diagnosis In This Child With Lower Extremity Pain?

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A child presents with a PAINFUL lower extremity. The pediatric board question states that he also has “decreased exercise tolerance.” You’re asked to identify the disorder. His cardiac and pulmonary exam are unremarkable but an x-ray of a LONG BONE is shown with various findings. Of the multiple findings in the images below, the white arrow points to the “classic” finding associated with this disorder.

QUESTIONS:

1. Can you name the disorder?

2. Can you name the classic findings shown in the images?

Classic x-ray findings shown in this child with leg pain

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ANSWER for, “What’s The Diagnosis In This Child With Lower Extremity Pain?”

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ANSWERS:

1. Can you name the disorder?
The disorder shown in these images is EWING'S SARCOMA. Ewing’s Sarcoma is a tumor of the long bones. A long bone is any bone that’s longer than it is wide. During your pediatric board review and on the pediatric boards, look for questions associated with X-rays of the humerus, femur, tibia or fibula.
 
EDUCATIONAL PEARLS FOR YOUR PEDIATRIC BOARD REVIEW:

Achondroplasia Mnemonic Images

Recognize this guy? It's Weeman. He was born with achondroplasia.

Mini-Me also has achondroplasia.

Now imagine these two devilishly bad guys making trouble as they carry around a TRIDENT to remind you of the trident-like fingers.

You could also imagine this little guy having achondroplasia.

Want to learn more about achondroplasia? CLICK HERE

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Pediatrics Board Review Core Study Guide

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ANSWER: What Condition Does Mini-Me Have?

 
 
1. What movie is this guy from?: 
Mini-Me is a character played by Verne Troyer in the second and third Austin Powers movies: Austin Powers: The Spy Who Shagged Me and Austin Powers in Goldmember. I actually think I liked the original one best.
 
2. What disorder does he have?
Verne Troyer has ACHONDROPLASIA! This is also known as the most common form of DWARFISM. Patients are short, have macrocephaly, mild hypotonia, short arms/legs, a relatively NORMAL TORSO and “trident-like” fingers. 
 
3. What's the inheritance pattern?
About 15-20% of cases are due to autosomal dominant inheritance. The rest are due to SPORADIC mutations.
 
Want to see a couple of mnemonic images? CLICK HERE in 2 days.
 

 Did that help? If so, what are you waiting for?

Pediatrics Board Review Core Study Guide

Your tool for efficiency and
guaranteed success!