In a 25-year-old female weighing 44 kg who presents with a protruding right chest wall and a mildly inward left chest wall, what is the diagnosis and recommended treatment?

Diagnosis: Asymmetric Pectus Deformity (Mixed Pectus Carinatum and Excavatum)

This 25-year-old female has an asymmetric chest wall deformity—specifically a mixed pectus abnormality with right-sided carinatum (protrusion) and left-sided excavatum (depression)—and should undergo clinical assessment with chest CT imaging to quantify the deformity severity, followed by either dynamic compression bracing if the chest wall remains flexible, or surgical correction (Ravitch or combined procedures) if rigid or causing physiological/psychological impairment. 1, 2

Clinical Context

The asymmetric presentation (right protrusion, left depression) is characteristic of mixed pectus deformity or pectus arcuatum variant. These represent congenital chest wall anomalies affecting approximately 1 in 250 people, caused by overgrowth of sternocostal cartilages 1, 3. Her low body weight (44 kg) at age 25 warrants attention, as it may reflect either constitutional factors or potential physiological impact from the deformity.

Diagnostic Workup

Essential Clinical Assessment

• Severity grading: Measure the degree of protrusion on the right and depression on the left
• Chest wall flexibility testing: Critical for determining treatment eligibility—compress the protruding area to assess rigidity
• Cardiopulmonary symptoms: Ask specifically about exercise intolerance, dyspnea with exertion, palpitations, or chest pain during activity
• Psychological impact: Screen for body image concerns, social withdrawal, avoidance of activities requiring exposure (swimming, intimate relationships), depression, or self-esteem issues 1

Imaging Protocol

CT chest with 3D reconstruction is the gold standard for:

• Quantifying asymmetry using standardized curve modeling 4
• Assessing cardiac or vascular compression
• Surgical planning if intervention is needed
• Documenting baseline for treatment monitoring 1

Plain radiographs are insufficient for mixed deformities and should not be used as the primary imaging modality 5.

Treatment Algorithm

Step 1: Determine Symptomatic Status

If asymptomatic (no physiological or psychological impairment):

• Supportive care with annual monitoring
• Reassurance that majority of defects are well-tolerated 1

If symptomatic (proceed to Step 2):

Step 2: Assess Chest Wall Flexibility

For flexible chest wall (can compress protrusion manually):

• Dynamic compression bracing: First-line treatment for the carinatum component
• Best results when started early, though at age 25 success rates are lower than in adolescents 6, 7
• Requires 23 hours/day wear initially, then gradual weaning
• Treatment duration typically 12-24 months
• Success depends heavily on compliance 7

For rigid chest wall or failed bracing (proceed to Step 3):

Step 3: Surgical Intervention

Open surgical correction (Ravitch procedure) is the primary option for mixed deformities:

• Involves resection of abnormal costal cartilages, sternal osteotomy, and repositioning
• Can address both carinatum and excavatum components simultaneously 8
• May be combined with Nuss procedure (minimally invasive repair) for complex cases 1, 8
• Hospital stay typically 4 days, early complication rate 6.7%, recurrence 4.4% 8

Step 4: Adjunctive Management

Regardless of primary treatment:

• Physical therapy: Address associated postural abnormalities (forward head posture, rounded shoulders, thoracic kyphosis)—present in >80% of pectus patients 9
• Psychological support: Essential component given the psychosocial impact during development 1

Critical Decision Points

Age consideration: At 25 years, she is beyond the optimal bracing window (pre-pubertal to early adolescence), making surgical correction more likely needed if symptomatic 7.

Asymmetry significance: The mixed presentation requires individualized surgical planning, as standard unilateral approaches may be insufficient. CT-based quantification shows that skeletal asymmetry averaging 19.3 cc volume difference is common even in healthy females 4, but symptomatic cases warrant correction.

Physiological vs. psychological indications: Both are valid treatment indications. The majority of patients requiring intervention have combined physiological limitation AND psychological distress 1. Screen for both domains.

Common Pitfalls

• Dismissing asymmetric deformities as "normal variation": While some asymmetry is physiologic 4, symptomatic mixed pectus requires treatment
• Attempting bracing in rigid chest walls: Wastes time and causes frustration; flexibility testing is mandatory before bracing 6
• Overlooking nutritional status: Her 44 kg weight needs evaluation—may indicate exercise limitation from cardiopulmonary compromise
• Delaying psychological assessment: Psychosocial harm occurs during crucial developmental periods and persists into adulthood if untreated 1