Lymph drainage

Question 1

Testes

Answer 1

abdominal aortic LNs

Question 2

prostate

Answer 2

internal iliac LNs

Question 3

superior bladder

inferior bladder

Answer 3

external iliac LNs

internal iliac LNs

Question 4

sigmoid colon

Answer 4

inferior mesenteric

Question 5

all skin from unbilicus down, incl anus up to pectinate line, incl external genitalia

(except skin of posterior calf)

Answer 5

superficial inguinal LNs

Question 6

skin of posterior calf

Answer 6

popliteal LNs

Question 7

Ovaries

Answer 7

para-aortic LNs

Question 8

distal vagina/vulva

Answer 8

superficial inguinal LNs

Question 9

Proximal vagina/uterus

Answer 9

obturator, external iliac and hypogastric LNs

Question 10

Left ovary/testis VENOUS drainage

Answer 10

L gonadal vein -> L renal vein -> IVC

Question 11

Right ovary/testis VENOUS drainage

Answer 11

R gonadal vein -> IVC

Question 12

why is a varicocele more common on L than R for males?

Answer 12

venous drainage: L spernatic vein enters L renal vein at 90’ angle

flow is less continuous on the L than on the R -> L venous pressure is greater than R venous pressure -> L varicocele more common