prominent fetal cisterna magna or more ominous?

This was a 34 week old fetus. No other positive findings were noted.

 

the answer: mega cisterna magna in third trimester fetus. The points favouring this diagnosis:

widened cisterna magna, but normal cerebellar vermis and fourth and lateral ventricles.

For more on this visit:

http://www.ultrasound-images.com/fetal-brain.htm#mega-cisterna-magna 

A patient of subclavian arterial bruit

This is a 20 yr old female patient with no other complaints than a rather prominent and palpable bruit in left supraclavicular region. What do you make of these color and spectral Doppler images? The right side is also shown for comparison:
The subclavian arteries of both sides:

 

The left axillary and brachial arteries:

 

The left radial and right radial and ulnar arteries:

Hidden VUJ calculus

This male patient reveals the difficulties the radiologist often faces when trying to discover the location of a ureteric calculus. At first the patient complained of pain in the left iliac region suggested a case of mid ureteric calculus. However, despite the hydronephrosis of the left kidney and a mild hydroureter on the left side, it was very difficult to locate a calculus which was actually located at its distal end, namely the left vesico-ureteric junction. a lot of factors were unfavourable to locate this calculus at the left vesicoureteric junction. First, the patient had a rather hyper distended bladder. Also, the left hydroureter was mild. Besides, the patient also had significant bowel gas. finally, the calculus itself was rather small at 6.5 mm.

The urinary bladder:

 

The Left Kidney and left VUJ:

  

The left VUJ calculus:

 

References:

http://www.ultrasound-images.com/ureteric-calculi.htm