30-year-old man:
With a slow-growing, mobile, soft tissue midline infrahyoid mass
What do you see?
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INFRAHYOID DERMOID CYST with virtually pathognomonic “SACK-OF-MARBLES” appearance
Category: Flaschards
Musculoskeletal #2 – Flashcard
13-year-old girl with knee pain for 2 months.
What do you see?
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Periphyseal (both knees) hyperintensity on sagittal fat suppressed T2 Weighted image (a) and Proton Density Weighted image (b) and hypointensity on sagittal T1Weighted image (c) (arrows).
FOPE: Focal periphyseal edema
– Mostly around the knees
– Both genders can be affected during skeletal maturation
– Painful manifestation of physiologic physeal fusion
Emergency #12 – Flashcard
31-year-old male:
* With flank pain
* Increased inflammatory parameters
* Decreased kidney function
Why is the right kidney less dense than the left?
Click here to see the answer
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
Neuroradiology #12 – Flashcard
We are showing a T1W fat suppressed gadolinium enhanced image.
What do you see?
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Submaseteric fluid collection, irregular rim enhancement (Abcess)
The masticator space is the primary sit of spread from mandibular infection.
Musculoskeletal #1 – Flashcard
Images of a CT bone window are shown.
What do you see?
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Paget’s disease of the skull
1. Mixed lytic and sclerotic lesions of the skull (cotton wool appearance).
2. Widening of the diploic space.
3. Frontal bone enlargement giving the appearance of the Tam o’Shanter hat
Emergency #10 – Long case
23-year-old male:
* Blunt force trauma of the abdomen
* Patient is hemodynamically stable
What do you see?
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Findings:
* Linear zone of hypodensity through the pancreatic body on both phases
* Surrounding fluid with relatively high-density retroperitoneal AND intraperitoneal
Note that the pancreas may appear normal in 20%-40% of patients when CT is performed within 12 h after trauma
MRCP may be useful to evaluate the integrity of the pancreatic duct
Pancreatic fracture:
* Complete laceration of the pancreatic body: AAST Grade III
* Require surgery within 24h
* Possible complications: fistula, pseudocyst, pancreatitis, abscesses, hemorrhage, pseudo-aneurysm
* Usually, injuries of other organs as well
Treatment in this case: distal pancreatectomy and closing of main pancreatic duct transsection, discharge to hospital in home country after 2 weeks
Neuroradiology #10 – Flashcard
What do you see in the following images?
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Cerebellopontine angle meningioma
* Extra-axial CP angle mass.
* Heterogenous low signal intensity on T2.
* Intense enhancement on post-contrast images with thickening and enhancement of the tentorium cerebelli.
* No intracanalicular extension.
Differential diagnosis: Schwannoma, ependymoma, metastasis
