Tag: flashcard

Head and Neck – Flashcard #1

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Axial CT bone window

What do you see on this image?

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Otosclerosis

There is a small lucency anterior to the vestibule, just lateral to the basal turn of the cochlea. Consistent with fenestral otosclerosis.

There are two types of otosclerosis:

1- Fenestral: is the most common type. It involves the bone anterior to the oval window and causes conductive hearing loss.
2- Retro-fenestral: involves the cochlear capsule and causes sensorineural hearing loss.
The two types can occur simultaneously.

Abdominal #9 – Flashcard

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31-year-old male with:

* Right upper quadrant & epigastric pain
* History of gastric bypass surgery

What aquatic sign is used for the finding in the red circle?

Whirlpool sign

What is shown at the blue arrow?

The transition point from dilated small bowel (with the “small bowel feces sign”) to non-dilated small bowel at the site of internal herniation through a mesenteric defect.

Musculoskeletal #9 – Flashcard

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12-year-old boy, asymptomatic:

Radiograph a

Radiograph b

What do you see?

Lytic lesion on distal fibular metaphysis with well-defined sclerotic borders is seen on both anteroposterior (a) and oblique (b) radiographs

What do you see?

NOF: non ossifying fibroma

– Most common fibrous bone lesion
– Same as fibrous cortical defect but larger version
– If large enough, may cause pathological fractures
– One of DON’T TOUCH lesions

Emergency #12 – Flashcard

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31-year-old male:
* With flank pain
* Increased inflammatory parameters
* Decreased kidney function

Why is the right kidney less dense than the left?

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Obstructive kidney stone in the right proximal ureter (arrow) with secondary hydronephrosis

The increased pressure in the collecting system slows the ultrafiltration of urine and causes a slower enhancement of the right kidney in comparison with the left kidney, reflecting the impaired kidney function