X-Ray Interpretation

• Image 1: AP chest/thorax view with left shoulder included
• Image 2: Dedicated AP view of the left shoulder

Key Findings

1. Left Shoulder - AC Joint Fixation Hardware

• Hook plate fixation or AC joint repair hardware (likely a hook plate with screws, or CC ligament reconstruction with buttons/anchors)
• This suggests a previous AC joint dislocation (Type III-V) that has been surgically repaired

2. Left Humerus

• The humeral head is well-seated in the glenoid - no dislocation
• The humeral shaft appears intact with no obvious acute fracture line visible on these views
• There is a focal density change / cortical irregularity at the proximal humeral shaft (mid-diaphysis region) - this could represent a healing fracture, periosteal reaction, or old injury. This warrants close inspection on dedicated humerus views.

3. Chest (Image 1)

• A nasogastric tube (NGT) or chest drain/intercostal tube is visible looping over the left chest - the tube descends and there is a visible connector/knot. This appears to be an intercostal chest drain (ICD) with its characteristic looping position
• Lung fields: The right lung appears relatively clear. The left lower zone shows some increased opacity - could be related to the drain indication (hemothorax, pneumothorax, or effusion being drained)
• Spine: There is visible scoliotic curvature of the thoracolumbar spine
• Lower lumbar/pelvis region: Multiple small rounded metallic densities are noted in the lower lumbar/pelvic region - these may represent surgical clips, IUD, or shrapnel/foreign bodies

4. Ribs

• No obvious rib fractures clearly identified, though the clinical context (trauma + chest drain + AC fixation) suggests a high-energy injury mechanism

Summary / Impression

Clinical Context Suggestion

• A left shoulder AC joint injury (surgically fixed)
• A left-sided chest injury requiring ICD insertion

• Dedicated AP and lateral views of the left humerus to characterize the shaft finding
• Chest X-ray in full PA view for better lung assessment
• Clinical correlation with mechanism of injury and operative notes

Subclinical Hypothyroidism - TSH 9.0 with Normal T3/T4: When to Start Thyroxine?

The Core Decision Framework

At TSH 9.0 - Treat IF Any of These Apply:

• Fatigue, weight gain, cold intolerance, constipation, dry skin, menstrual irregularity, cognitive slowing, depression
• Even vague symptoms tilt the decision toward treatment

• Indicates autoimmune destruction is ongoing
• Risk of progression to overt hypothyroidism: ~70% of patients with TSH >8 will reach TSH >10 within 4 years
• TPO positivity independently favors treatment

• Treat if TSH >2.5 mIU/L in pregnancy
• Undetected hypothyroidism in early pregnancy is linked to impaired fetal neurological development
• Low threshold for treatment regardless of antibody status

• More likely to benefit from treatment long-term
• Cardiovascular risk reduction (lowers LDL cholesterol)
• TSH >7-8 with younger age = reasonable indication even without symptoms

• Subclinical hypothyroidism impairs lipid metabolism
• LT4 treatment demonstrably lowers LDL in this group

• Strong indication; meta-analyses show improved pregnancy rates and reduced miscarriage with LT4 treatment

When to Observe (Not Treat) at TSH 9.0:

• Elderly patients (>65 years): Evidence shows NO improvement in symptoms or quality of life with treatment. TSH naturally drifts higher with age (up to 7.5 mIU/L may be normal for >80 years). Risk of iatrogenic AF and osteoporosis from over-treatment outweighs benefit.
• Asymptomatic, younger patients with negative TPO antibodies - can repeat TSH in 3 months first
• First-ever reading - must confirm elevation is persistent over at least 3 months before committing to treatment

Practical Steps Before Starting Treatment

1. Repeat TSH in 3 months to confirm it is persistent (not transient from illness, stress, or drugs)
2. Check TPO antibodies - this single test most powerfully guides the decision
3. Screen for symptoms systematically - use a thyroid symptom checklist
4. Check fasting lipids - if LDL is elevated, this strengthens the case for treatment

If You Decide to Treat:

• Starting dose: LT4 25-50 mcg/day in most adults; 12.5-25 mcg/day in elderly or those with cardiac disease
• Target: Normalize TSH to 0.5-2.5 mIU/L
• Follow-up TSH: 6-8 weeks after starting, then annually once stable
• Review at 6 months: If symptoms don't improve, reconsider whether treatment is warranted

Summary Recommendation for TSH 9.0

Treat if: symptomatic + any age, OR TPO-positive, OR pregnant/planning pregnancy, OR <65 years with elevated LDL.

Observe if: asymptomatic + elderly + TPO-negative + first reading - repeat TSH in 3 months first.

• Harrison's Principles of Internal Medicine 22E, p. 3075
• Goldman-Cecil Medicine, Subclinical Hypothyroidism section
• ETA 2025 LT4 Guidelines: TSH 7-10 in elderly is patient-tailored; TSH >10 treat in all
• Cleveland Clinic - SCH Management: early treatment reasonable at TSH >7-8 given high progression rate