1. Embryology of excretory
system
By:
Dr Kushagra V Grag
Resident
Radio-Diagnosis

2. DEVELOPMENT OF KIDNEY &
URETER

3. 3RD WEEK, DORSAL VIEW & T.S.

4. 3RD WEEK (Approx 24 days),
LATERAL VIEW & T.S.

5. 3RD WEEK (Approx 26 days),
LATERAL VIEW & T.S.

6. 21 DAYS
25 DAYS

7. DEVELOPMENT OF KIDNEYS

8. PRONEPHROS
5TH WK

10. MESONEPHROS
5TH WK
5TH WK

12. CARNEGIE STAGE 22, Approx 54 DAYS

13. 5TH WK

14. 5TH WK

15. 5TH WK

16. 5TH – 11TH WK

17. CARNEGIE STAGE 17, Approx 42 DAYS

18. METANEPHROS
END OF 5TH WK

20. DEVELOPMENT OF THE RENAL
PELVIS, CALYCES & COLLECTING
TUBULES OF THE METANEPHROS
6TH WK END OF 6TH WK
7TH WK
NEWBORN

21. 5TH WK
5TH-8TH WK

22. 8TH WK

23. 28TH WK FETUS

24. NEPHROGENESIS
8TH WK

25. DEVELOPMENT OF URETER

26. 5TH WEEK
7TH WEEK
9TH WEEK

27. DEVELOPMENT OF METANEPHRIC
EXCRETORY UNITS

28. MOLECULAR REGULATION OF
KIDNEY DEVELOPMENT

29. ASCENT OF KIDNEYS

30. POSITIONAL CHANGES & RENAL
VASCULATURE
6TH -9TH
WK

31. ACCESSORY (SUPERNUMERARY)
RENAL ARTERIES

33. ACCESSORY (SUPERNUMERARY)
RENAL VEINS

34. CYSTIC KIDNEY DISEASE

35. AUTOSOMAL RECESSIVE
POLYCYSTIC KIDNEY DISEASE

36. MULTICYSTIC DYSPLASTIC
KIDNEY

37. RENAL AGENESIS

39. 19.5 WEEKS
FETUS

40. ECTOPIC KIDNEYS

41. PELVIC KIDNEY

43. CROSSED RENAL ECTOPIA

46. HORSE SHOE KIDNEY

47. HORSE SHOE KIDNEY
IN A 13-WK FEMALE
FETUS

49. DISCOID (“PANCAKE”) KIDNEY

51. SUPERNUMERARY KIDNEYS

52. MALROTATED KIDNEY

53. MALROTATION, BIFID URETER,
SUPERNUMERARY KIDNEY

54. PARTIAL/ COMPLETE BIFID
URETER

59. ECTOPIC URETERIC ORIFICE

60. RETROCAVAL URETER

61. MEGALOURETER

62. REFERENCES
GRAY’s Anatomy, 40th Edition
The Developing Human: Clinically Oriented Embryology, By
MOORE & PERSAUD, 5th Edition
LANGMAN’s Embryology, By T.W.SADLER, 10th Edition
LAST’s Anatomy Regional & Applied, By CHUMMY S.
SINNATAMBY, 10th Edition
Clinically Oriented Anatomy, By KEITH L. MOORE, 8th Edition
Clinical Anatomy By Regions, By RICHARD S. SNELL, 8th
Edition