Table 2 Anatomical details of the 9 patients with supernumerary kidneys

1

right

3.0 × 2.1 × 1.9

Dorsal of the bladder

Left, normal

Right, normal

Internal Iliac

Internal Iliac

Seminal vesicle

Concrements in SK without function

–

–

2

left

1.7 × 1.5 × 1.2

Ventral of the upper pole of the left kidney

Right, normal

Left, normal (Ureter fissus)

Aorta

Caval vein

Orifice in ureter of normal IK

(Ureter fissus)

Concrements in SK

–

–

3

right

3.7 × 3.2 × 1.5

Cranial of the right kidney

Right, normal

Right, normal

Aorta

Caval vein

Orifice in ureter of normal IK

(Ureter fissus)

–

–

4

right

8.5 × 8.1 × 6.5

Dorsal of the bladder, median and paramedian

Left, normal

Right; reflux; pyelonephritis; removed

Internal Iliac

Internal iliac

Bladder

Hydronephrosis IV in SK; Pyelonephritis in SK and IK

–

–

5

right

2.9 × 2.0 × 2.0

Dorsal of the bladder; cranial of the seminal vesicle

Left, normal

Right; pelvic kidney

Internal Iliac

Internal iliac

Seminal vesicle

–

6 lumbar vertebrae; Cleft of 6th vertebrate body arc

6

right

9.4 × 7.6 × 7.5

Dorsal and cranial of the bladder, median and paramedian

Left, normal

Right; pelvic kidney; cirrhosis of the kidney

Internal Iliac

Internal iliac

Bladder

Hydronephrosis IV in SK; cirrhosis of IK

–

Cleft of 5th vertebrate body arc

7

right

9.3 × 6.6 × 4.2

Caudal of the right kidney

Left, normal

Right, normal

Aorta

Caval vein

Orifice in ureter of IK (Ureter fissus)

Hydronephrosis IV in SK

–

–

8

left

6.7 × 5.2 × 6.2

Cranial of the left kidney

Right, normal

Cirrhosis of the kidney; kidney stones

Aorta

Caval vein

Orifice in ureter of IK (Ureter fissus)

Hydronephrosis IV in SK; cirrhosis of IK; kidney stones in common stem of ureter fissus

–

–

9

left

12.2 × 8.8 × 8.9

Caudal and lateral of the left kidney

Right, normal

Left; pelvic kidney

Internal Iliac

Internal Iliac

Bladder (caudal)

Hydronephrosis IV in SK; ipsilateral indirect inguinal hernia

–

Cleft of 5th vertebrate body arc