Detailed X-Ray Analysis

Disclaimer: This analysis is for educational purposes. A formal radiological report must be issued by a licensed radiologist in a clinical context.

IMAGE 1 - Skull PA (Frontal) + Skull Lateral

View 1A - PA (Postero-Anterior) Skull

• The outer and inner tables of the skull appear intact with no visible discontinuity or step-off suggesting a fracture.
• Diploic space (cancellous bone between inner and outer tables) appears normal in density.
• No obvious lytic or sclerotic lesions are identified.
• Coronal and sagittal sutures are visible and appear within normal limits for a 30-year-old (should be largely fused/closed at this age).

• Bilateral orbital rims appear symmetric and intact.
• Nasal bones are visible; no obvious deviation.
• Maxillary sinuses: appear relatively clear (no obvious opacification or air-fluid levels).
• Mandible is visible and appears intact.
• Dentition is present with no obvious missing teeth on this view.

View 1B - Skull Lateral (Right side, from same film)

• The outer table, diploic space, and inner table are visible - no obvious step-off or linear lucency consistent with a fracture.
• Vascular markings (middle meningeal artery grooves) are visible as fine branching radiolucent lines within the calvarium - this is normal.
• No abnormal vascular channels or widening noted.

• Visible in the lateral view. The floor, anterior and posterior clinoid processes are identifiable.
• No obvious ballooning, erosion, or "double floor" sign (which would suggest a pituitary mass).
• Normal-sized sella for a 30-year-old male.

• Frontal sinus: visible as a radiolucent area above the nasal bridge - appears pneumatized normally.
• Sphenoid sinus: visible posteriorly - appears clear.
• Nasal bones and hard palate are visible.
• Mandible and dentition: mandibular condyle, ramus, and body visible. Upper and lower teeth are present and aligned.

• C1-C5 levels are partially visible.
• Vertebral bodies appear normally aligned.
• No gross anterior wedging or listhesis visible on this view.
• Prevertebral soft tissue shadow appears within normal limits (no widening).

IMAGE 2 - Skull Lateral (Left side)

• The calvarium is well-corticated with intact inner and outer tables.
• Diploic space is normal.
• No linear lucencies, step-off deformities, or depressed fractures.
• Normal vascular channel impressions are present.
• Coronal suture: faintly visible anteriorly - normal in appearance.

• Well-defined floor and posterior wall (dorsum sellae).
• No erosion of the dorsum. No double floor.
• Normal sella size - consistent with a normal pituitary.

• Frontal sinus is clearly pneumatized - appears clear (dark/lucent) - no opacification.
• Sphenoid sinus (posteriorly) also appears clear.

• Mandibular condyle is visible articulating in the glenoid fossa.
• No obvious joint space narrowing or condylar erosion.

• Upper and lower molar teeth visible and appear present.
• Jaw is slightly open (mouth-open position for this view).

• C1 through approximately C6-7 are visible.
• Vertebral body heights appear preserved.
• Cervical lordosis is present (normal gentle anterior curve).
• Disc spaces appear maintained.
• No gross osteophytes or listhesis visible at this resolution.

IMAGE 3 - Cervical Spine AP + Lateral

View 3A - Cervical Spine AP (Antero-Posterior)

• The vertebral bodies from C3 to C7 are visible in the AP view, appearing in a vertical column.
• No gross lateral scoliotic curvature.

• Mild loss of height is possible at one or more levels - difficult to confirm precisely, but the disc spaces appear somewhat narrowed at multiple levels (most apparent in the lower cervical region), consistent with degenerative disc disease (spondylosis) in an 80-year-old.
• Endplate sclerosis (increased density at the upper and lower margins of vertebral bodies) may be present - a feature of degenerative change.

• In an elderly patient, these are often enlarged/osteophytic, visible as lateral bony projections on AP view. This appears to be present here.

• Midline alignment of spinous processes appears maintained (no rotational malalignment).

• No gross widening of prevertebral soft tissues visible on this view.

• Bilateral clavicles visible. No gross bony lesion.
• Upper ribs and lung apices visible - no obvious consolidation or mass.

View 3B - Cervical Spine Lateral

• The normal cervical spine should have a gentle anterior concave curve (lordosis).
• On this film, the lordosis appears reduced or straightened - this is common in degenerative cervical disease and muscle spasm.

• Anterior osteophytes are clearly visible - bony projections from the anterior margins of multiple vertebral bodies. These are characteristic of cervical spondylosis (degenerative osteoarthritis).
• The osteophytes are most prominent at multiple levels (C4-C5, C5-C6, C6-C7 appear most affected).
• This "lipping" or "beaking" pattern at multiple levels is typical of multi-level cervical spondylosis.

• Multiple disc spaces appear narrowed compared to expected normal height - most evident at C5-C6 and C6-C7.
• Disc space narrowing + osteophytes = classic degenerative disc disease.

• Facet joint degeneration may be contributing to foraminal narrowing (cannot be fully assessed on plain films).

• If posterior osteophytes encroach on the spinal canal, this can cause cervical myelopathy or radiculopathy. These are suspected but require MRI to confirm cord/nerve root compression.

• The prevertebral soft tissue shadow anterior to the vertebral bodies appears within acceptable limits at upper levels (C2-C3 should be <7 mm; C6-C7 <22 mm). No significant widening suggesting abscess or hematoma.

• The odontoid process (dens) is visible. No obvious fracture or atlantoaxial subluxation.
• In elderly patients, dens fractures and C1-C2 instability are important - appears grossly intact here.

• Reduced cervical lordosis
• Multiple anterior osteophytes at C4 through C7
• Disc space narrowing at multiple levels (most prominent C5-C6, C6-C7)
• Findings consistent with advanced degenerative cervical spine disease expected in an 80-year-old
• No acute fracture or gross malalignment visible
• MRI of cervical spine would be warranted if the patient has symptoms of myelopathy (gait disturbance, hand clumsiness) or radiculopathy (arm pain, numbness, weakness)

Summary Table

Clinical note: Plain X-rays of the skull are limited in detecting soft tissue pathology (brain, meninges, discs, nerve roots). CT is preferred for acute trauma; MRI is the gold standard for assessing the spinal cord, discs, and nerve roots. These films should always be correlated with the patient's clinical presentation by the treating physician.

The Sphenoid Bone

Overview

1. Body (central)
2. Lesser wings (2) - project anterosuperiorly
3. Greater wings (2) - project posterolaterally
4. Pterygoid processes (2) - descend inferiorly

1. Body

• Superior surface - hollowed to form the sella turcica ("Turkish saddle"), which houses the pituitary gland. It is roofed by the diaphragma sellae (fibrous dura). The anterior and posterior clinoid processes border the sella.
• Cavernous sinuses lie on either side of the body, grooving its lateral surfaces.
• Inferior surface - forms the roof of the postnasal space (nasopharynx).
• Sphenoid sinuses are contained within the body - paired, pneumatized air spaces with significant clinical relevance (sinusitis, transsphenoidal pituitary surgery).

2. Lesser Wings

• Extend anterosuperiorly from the body as two flat, triangular plates.
• Optic canal perforates the base of each lesser wing, transmitting the optic nerve (CN II) and ophthalmic artery.
• The sharp posterior edge of the lesser wing forms the posterior boundary of the anterior cranial fossa.
• The gap between the lesser and greater wings forms the superior orbital fissure (see below).

3. Greater Wings

• Anteriorly - frontal bone
• Laterally - zygomatic bone
• Posteriorly - petrous temporal bone

Key foramina in the greater wing (from anterior to posterior):

4. Superior Orbital Fissure

• CN III (oculomotor)
• CN IV (trochlear)
• CN V1 (ophthalmic division of trigeminal, and its branches: lacrimal, frontal, nasociliary)
• CN VI (abducent)
• Ophthalmic veins

5. Pterygoid Processes

Medial pterygoid plate

• Forms the posterior wall of the nasal cavity.
• Inferiorly ends as the pterygoid hamulus - a hook-like projection around which the tendon of tensor veli palatini curves (acts as a pulley).
• The scaphoid fossa at its root is the attachment for tensor veli palatini.
• The cartilaginous Eustachian tube grooves its posterior border superiorly.
• The pterygomandibular raphe attaches at its lower end.

Lateral pterygoid plate

• Projects posterolaterally into the infratemporal fossa.
• Lateral surface: attachment for the lower head of lateral pterygoid muscle.
• Medial surface: attachment for the deep head of medial pterygoid muscle.
• Both muscles are involved in jaw protrusion and opening.

6. Pterygoid Canal (Vidian Canal)

• Preganglionic parasympathetic fibers from the greater petrosal nerve (from CN VII)
• Postganglionic sympathetic fibers from the deep petrosal nerve (carotid plexus)

7. Clinical Correlates

Summary

• Gray's Anatomy for Students, pp. 1114, 1133
• Scott-Brown's Otorhinolaryngology Head & Neck Surgery Vol 2, pp. related to lateral skull base