(A,B): Left parasagittal scan (A) demonstrating large, enormously dilated, smooth and thin walled urinary bladder. Segments of dilated tortuous ureter can also be identified. Fig 4: (b) Oblique scan (B) showing a grossly hydronephrotic left kidney with a thin rim of renal parenchymal mantle. Note the typical bladder wall features. Placenta is located posteriorly. Severe oligohydramnios is present. Same fetus as in Fig. 1. Bl: Bladder, K : Kidney, U:Ureteric segment. Bl: Urinary Bladder, Th: Thorax.