CT abdomen/pelvis (lower) axial - labeling questions

Case contributed by Dr Craig Hacking
Annotated image

Normal CT abdomen/pelvis (with labels)

The labeled structures are (excluding the correct side):

  1. ascending colon
  2. superior mesenteric vein
  3. superior mesenteric artery
  4. gonadal vessels
  5. linea semilunaris
  6. abdominal aorta
  7. linea alba
  8. inferior vena cava
  9. inferior mesenteric artery
  10. inferior mesenteric vein
  11. lumbar vein
  12. jejunum
  13. right colic vessels
  14. right common iliac artery
  15. abdominal portion of the ureter
  16. left colic artery
  17. umbilicus
  18. ileocecal valve
  19. left common iliac artery
  20. quadratus lumborum muscle
  21. transversus abdominis muscle
  22. terminal ileum
  23. internal oblique muscle
  24. right common iliac vein
  25. descending colon
  26. erector spinae muscle group
  27. cecum
  28. external oblique muscle
  29. left common iliac vein
  30. vermiform appendix
  31. psoas major muscle
  32. iliacus muscle
  33. ileum
  34. left external iliac artery
  35. right internal iliac artery
  36. superior rectal vein
  37. superior rectal artery
  38. right internal iliac vein
  39. gluteus medius muscle
  40. left internal iliac vein
  41. gluteus minimus muscle
  42. pelvic portion of the ureter
  43. right external iliac artery
  44. left external iliac vein
  45. superior gluteal vessels
  46. rectus abdominis muscle
  47. sigmoid colon
  48. piriformis muscle
  49. right external iliac vein
  50. inferior epigastric vessels
  51. ductus deferens
  52. obturator artery
  53. obturator vein
  54. urachus
  55. obliterated umbilical artery
  56. anterior inferior iliac spine
  57. inferior gluteal vessels
  58. vesiculoureteric junction
  59. seminal vesicle
  60. mesorectal fat
  61. mesorectal fascia
  62. urinary bladder
  63. internal pudendal vessels
  64. retropubic space (of Retzius)
  65. inferior vesicular vessels
  66. internal obturator muscle
  67. fat within the inguinal canal
  68. iliopsoas muscle
  69. levator ani muscle
  70. rectus femoris muscle
  71. tensor fascia lata muscle
  72. pectineus muscle
  73. sartorius muscle
  74. rectum
  75. obturator canal
  76. gluteus maximus muscle
  77. prostate gland
  78. inferior rectal artery
  79. spermatic cord
  80. ischioanal fossa
  81. right common femoral vein
  82. iliopsoas tendon
  83. sciatic nerve
  84. suspensory ligament of the penis
  85. left common femoral artery
  86. external obturator muscle
CT

Normal CT abdomen/pelvis (without labels)

The same normal abdominopelvic CT without labels for reference.

Case Discussion

The labeled structures are (excluding the correct side):

  1. ascending colon
  2. superior mesenteric vein
  3. superior mesenteric artery
  4. gonadal vessels
  5. linea semilunaris
  6. abdominal aorta
  7. linea alba
  8. inferior vena cava
  9. inferior mesenteric artery
  10. inferior mesenteric vein
  11. lumbar vein
  12. jejunum
  13. right colic vessels
  14. right common iliac artery
  15. abdominal portion of the ureter
  16. left colic artery
  17. umbilicus
  18. ileocecal valve
  19. left common iliac artery
  20. quadratus lumborum muscle
  21. transversus abdominis muscle
  22. terminal ileum
  23. internal oblique muscle
  24. right common iliac vein
  25. descending colon
  26. erector spinae muscle group
  27. cecum
  28. external oblique muscle
  29. left common iliac vein
  30. vermiform appendix
  31. psoas major muscle
  32. iliacus muscle
  33. ileum
  34. left external iliac artery
  35. right internal iliac artery
  36. superior rectal vein
  37. superior rectal artery
  38. right internal iliac vein
  39. gluteus medius muscle
  40. left internal iliac vein
  41. gluteus minimus muscle
  42. pelvic portion of the ureter
  43. right external iliac artery
  44. left external iliac vein
  45. superior gluteal vessels
  46. rectus abdominis muscle
  47. sigmoid colon
  48. piriformis muscle
  49. right external iliac vein
  50. inferior epigastric vessels
  51. ductus deferens
  52. obturator artery
  53. obturator vein
  54. urachus
  55. obliterated umbilical artery
  56. anterior inferior iliac spine
  57. inferior gluteal vessels
  58. vesiculoureteric junction
  59. seminal vesicle
  60. mesorectal fat
  61. mesorectal fascia
  62. urinary bladder
  63. internal pudendal vessels
  64. retropubic space (of Retzius)
  65. inferior vesicular vessels
  66. internal obturator muscle
  67. fat within the inguinal canal
  68. iliopsoas muscle
  69. levator ani muscle
  70. rectus femoris muscle
  71. tensor fascia lata muscle
  72. pectineus muscle
  73. sartorius muscle
  74. rectum
  75. obturator canal
  76. gluteus maximus muscle
  77. prostate gland
  78. inferior rectal artery
  79. spermatic cord
  80. ischioanal fossa
  81. right common femoral vein
  82. iliopsoas tendon
  83. sciatic nerve
  84. suspensory ligament of the penis
  85. left common femoral artery
  86. external obturator muscle
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Case information

rID: 64315
Published: 20th Nov 2018
Last edited: 14th Aug 2019
Inclusion in quiz mode: Included

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