Infant with suspected L-shaped kidney by previous sonography exams addressed to follow-up US.
At US left kidney didn' t visualized in the typical place from flank view. At scan thru anterior abdominal wall visualized left kidney(lobe) which communicate by isthmus with right kidney(attachment 1, see annotation below), long axises of kidneys are parallel, so it' s a variant of horseshoe kidney. Both renal pelvis are dilated. In the small pelvis right and down to empty bladder with Foley catheter visualized dilated ureter (megaureter - attachment 2, see annotation below) route of which is impossible to trace(attachment 3), in the left renal pelvis and right megaureter - visualized phenomenon of snow-storm(sludge?).
Today I understood that didn't extract an image of dilated left renal pelvis from video and didn't explain one of structures in the first attachement to previous post - I'm very sorry(there is high humidity here in Moscow), and attaching missing images.