CT facial bones/orbits coronal - labeling questions

Case contributed by Dr Craig Hacking
Annotated image

Normal CT facial bones (with labels)

The labeled structures are (excluding the correct side):

  1. nasal bone
  2. nasal vestibule
  3. internasal suture
  4. anterior nasal spine
  5. nasal process of the maxilla
  6. frontal sinus
  7. frontonasal suture
  8. nasomaxillary suture
  9. anterior nasal aperture (pyriform fossa)
  10. squamous portion of the frontal bone
  11. orbital portion of the frontal bone
  12. agger nasi cell (anterior-most ethmoidal sinus)
  13. frontal crest
  14. perpendicular plate of the ethmoid
  15. concha bullosa
  16. foramen cecum
  17. nasolacrimal canal
  18. lamina papyracea
  19. lacrimal groove
  20. superior olfactory recess
  21. infraorbital canal
  22. globe
  23. Haller cell
  24. crista galli
  25. middle nasal turbinate (concha)
  26. infundibulum
  27. maxillary ostium
  28. olfactory fossa
  29. frontozygomatic suture
  30. inferior nasal meatus
  31. inferior nasal turbinate (concha)
  32. mental foramen
  33. lacrimal gland
  34. fovea ethmoidalis
  35. alveolar recess of the maxillary sinus
  36. lateral lamella
  37. cribriform plate
  38. zygomaticomaxillary suture
  39. anterior ethmoidal foramen
  40. superior nasal turbinate (concha)
  41. orbital process of zygomatic bone
  42. palatine process of the maxilla
  43. superior oblique muscle
  44. optic nerve
  45. temporalis muscle
  46. lateral rectus muscle
  47. superior rectus muscle
  48. inferior rectus muscle
  49. inferior orbital fissure
  50. greater wing of the sphenoid
  51. alveolar process of the maxilla
  52. coronoid process of the mandible
  53. greater palatine foramen
  54. body of the mandible
  55. lesser wing of the sphenoid
  56. posterior nasal aperture (choanae)
  57. greater palatine canal
  58. horizontal plate of the palatine bone
  59. superior orbital fissure
  60. sphenopalatine foramen
  61. vomer
  62. pterygoid process of the sphenoid
  63. pterygopalatine fossa
  64. pterygomaxillary fissure
  65. posterior nasal spine
  66. optic canal
  67. intersphenoid septum
  68. foramen rotundum
  69. pterygoid fossa
  70. lateral pterygoid plate
  71. medial pterygoid plate
  72. pterygoid hamulus
  73. mandibular canal
  74. zygoma
  75. rostrum of the sphenoid
  76. anterior clinoid process
  77. torus tubarius
  78. lateral pharyngeal recess (fossa of Rosenmuller)
  79. mandibular foramen
  80. nasopharynx
  81. angle of the mandible
  82. pituitary fossa
  83. Vidian canal
  84. foramen ovale
  85. ramus of the mandible
  86. posterior clinoid process
  87. sphenoid sinus
  88. dorsum sellae
  89. mandibular (glenoid) fossa of the temporal bone
  90. condylar neck of the mandible
  91. head of the mandible
  92. clivus
  93. carotid canal
  94. temporomandibular joint
  95. styloid process
  96. external auditory (acoustic) canal
CT

Normal CT facial bones (without labels)

The same normal facial bones CT without labels for reference.

Case Discussion

The labeled structures are (excluding the correct side):

  1. nasal bone
  2. nasal vestibule
  3. internasal suture
  4. anterior nasal spine
  5. nasal process of the maxilla
  6. frontal sinus
  7. frontonasal suture
  8. nasomaxillary suture
  9. anterior nasal aperture (pyriform fossa)
  10. squamous portion of the frontal bone
  11. orbital portion of the frontal bone
  12. agger nasi cell (anterior-most ethmoidal sinus)
  13. frontal crest
  14. perpendicular plate of the ethmoid
  15. concha bullosa
  16. foramen cecum
  17. nasolacrimal canal
  18. lamina papyracea
  19. lacrimal groove
  20. superior olfactory recess
  21. infraorbital canal
  22. globe
  23. Haller cell
  24. crista galli
  25. middle nasal turbinate (concha)
  26. infundibulum
  27. maxillary ostium
  28. olfactory fossa
  29. frontozygomatic suture
  30. inferior nasal meatus
  31. inferior nasal turbinate (concha)
  32. mental foramen
  33. lacrimal gland
  34. fovea ethmoidalis
  35. alveolar recess of the maxillary sinus
  36. lateral lamella
  37. cribriform plate
  38. zygomaticomaxillary suture
  39. anterior ethmoidal foramen
  40. superior nasal turbinate (concha)
  41. orbital process of zygomatic bone
  42. palatine process of the maxilla
  43. superior oblique muscle
  44. optic nerve
  45. temporalis muscle
  46. lateral rectus muscle
  47. superior rectus muscle
  48. inferior rectus muscle
  49. inferior orbital fissure
  50. greater wing of the sphenoid
  51. alveolar process of the maxilla
  52. coronoid process of the mandible
  53. greater palatine foramen
  54. body of the mandible
  55. lesser wing of the sphenoid
  56. posterior nasal aperture (choanae)
  57. greater palatine canal
  58. horizontal plate of the palatine bone
  59. superior orbital fissure
  60. sphenopalatine foramen
  61. vomer
  62. pterygoid process of the sphenoid
  63. pterygopalatine fossa
  64. pterygomaxillary fissure
  65. posterior nasal spine
  66. optic canal
  67. intersphenoid septum
  68. foramen rotundum
  69. pterygoid fossa
  70. lateral pterygoid plate
  71. medial pterygoid plate
  72. pterygoid hamulus
  73. mandibular canal
  74. zygoma
  75. rostrum of the sphenoid
  76. anterior clinoid process
  77. torus tubarius
  78. lateral pharyngeal recess (fossa of Rosenmuller)
  79. mandibular foramen
  80. nasopharynx
  81. angle of the mandible
  82. pituitary fossa
  83. Vidian canal
  84. foramen ovale
  85. ramus of the mandible
  86. posterior clinoid process
  87. sphenoid sinus
  88. dorsum sellae
  89. mandibular (glenoid) fossa of the temporal bone
  90. condylar neck of the mandible
  91. head of the mandible
  92. clivus
  93. carotid canal
  94. temporomandibular joint
  95. styloid process
  96. external auditory (acoustic) canal
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Case information

rID: 62758
Published: 13th Sep 2018
Last edited: 14th Aug 2019
System: Head & Neck
Inclusion in quiz mode: Included

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