Pregnancy with fibroid and hypocoiled cord:

A large fibroid seen in the fundus of the uterus- gestational age- 14 weeks. Despite the large size of the intramural fibroid, it does not appear to compress on the uterine cavity, but actually bulges outwards.

 Color Doppler imaging shows lack of significant vascularity within the mass:

Follow up ultrasound images at 24 weeks gestational age:

The fibroid has not increased in size. The fetus shows normal growth parameters. However, there is also an additional finding- observe the umbilical cord:

There is lack of normal coiling of the cord in this same case. Called hypocoiling of the cord, this finding must result in a detailed study of the fetus for any congenital anomalies and also regular follow up ultrasonography to monitor fetal health.
See: http://www.ultrasound-images.com/umbilical-cord.htm#Hypocoiled_umbilical_cord
Also: http://www.ultrasound-images.com/uterus.htm#Fibroid_in_pregnancy  (for more similar case ultrasound studies).

Mild orchitis in 6 year old child:

In a child, the first symptom that something is wrong in the scrotum, is pain. Ultrasound and color Doppler imaging may often not find the typical "testis on fire" sign of acute orchitis. This child has left orchitis, with only mild inflammation and hyperemia of the left testis. However, note the presence of a small hydrocele on the left side further supporting the diagnosis of left orchitis.

Third trimester pregnancy with pain

This patient in 3rd trimester pregnancy presented with pelvic pain. What is your diagnosis?
Ultrasound images showing the liqor:

Ultrasound images of the lower segment of uterine wall:

A case of right iliac fossa pain in a child:

This 8 yr old girl had severe right iliac fossa pain and tenderness.
Ultrasound and color Doppler images of the right hemipelvis and right iliac region show a severely swollen appendix (the diameter varied from 8 to 12 mm.) with considerable hyperemia of the wall (see the color Doppler images). The tubular structure showed typical gut signature, one of the hallmarks of Gastro intestinal tract ultrasonography. There is also a large inhomogenous collection with echogenic debris anterior to the appendix, possibly an abscess (peri-appendicular)- (M or ABS)

For more on appendicular pathology - visit:
http://www.ultrasound-images.com/appendix.htm

Ultrasound imaging of popliteal vein thrombosis

This is a rather puzzling case. 54 year old male patient with right calf pain.
The right femoral vein shows this highly pulsatile nature (observe those spectral Doppler waveforms).
Perhaps they can be explained by the transmitted pulsations of the adjacent femoral artery. But I am not fully convinced. Those pulsations were seen even in the GSV (great saphenous vein). See images below:
The right femoral artery:

The right GSV (great saphenous vein): There is no normal venous flow pattern- only a spiky pulsation- more arterial in nature:

The right femoral vein:

Normal compressibility of the right femoral vein:

The femoral vein and artery in long section color Doppler flow:

Spectral Doppler trace of the right femoral vein- again that pattern

I tried augmentation by compressing below the calf- weak augmentation of the femoral vein:

And now the right popliteal vein:
The upper half of the popliteal vein shows good flow on color Doppler imaging:

Spectral waveform- normal flow in upper part of popliteal vein:

Strong venous waveforms again in the upper half of the popliteal vein:

The lower half of the popliteal vein shows a different picture with a partial thrombosis likely. There is almost no flow in this part of the vein. The thrombosis of the popliteal vein can explain the calf pain.

 Comparing the upper half and lower part of the affected popliteal vein- normal flow in the upper half vs poor or no flow in the lower part. That echogenic matter in the lower part is possibly the thrombus!

Sonography of right renal mass:

This huge right renal (upper pole) or suprarenal mass measured 8 x 7 x 12 cms. approximately. Looking at the ultrasound images, it looks like an echogenic homogenous mass. Is it a renal angiomyolipoma or a suprarenal tumor?

It (the tumor) sure looks poorly vascular...Even with very low PRF settings, I could barely see any vessels.
For more on renal angiomyolipoma see: http://www.ultrasound-images.com/kidneys.htm#Renal_angiomyolipoma_-%28AML%29_of_right_kidney