What do you see on the following images?
The jugular bulb bulges into the left middle ear cavity with absence of the sigmoid plate separating the jugular bulb from the middle ear in keeping with dehiscent jugular bulb.
It is one of the causes of pulsatile tinnitus, patients can also present with conductive hearing loss if the jugular vein contacts the tympanic membrane.
What do you see on this image?
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.
31-year-old male with:
* Right upper quadrant & epigastric pain
* History of gastric bypass surgery
Whirlpool sign
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.
45-year-old male:
– Presenting with mixed hearing loss.
What do you see on the image? What is the most likely diagnosis?
Diffuse fenestral and retrofenestral otosclerosis
12-year-old boy, asymptomatic:
Lytic lesion on distal fibular metaphysis with well-defined sclerotic borders is seen on both anteroposterior (a) and oblique (b) radiographs
– 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
65-year-old woman with cholecystitis:
* Edema in gall bladder wall, enhancement, cholecystolithiasis (red arrow) > cholecystitis
* But also choledocholithiasis (blue arrow)!
* Indication for endoscopic retrograde cholangiopancreaticography (ERCP) with papillotomy and stone removal.
Regarding the following images:
What do you see?
Metronidazole induced toxicity
Bilateral symmetric high T2 & FLAIR signal involving the dentate nuclei of the cerebellum. The appearance favors metabolic conditions particularly toxic leukoencephalopathy.
