Understanding Prognosis: What It Means & How It's Determined

Prognosis is a medical prediction of the likely course and outcome of a disease or condition.

Factors Influencing Prognosis

• Disease type, stage, grade, molecular markers
• Patient age, comorbidities, functional status
• Treatment options, efficacy, accessibility
• Response to prior therapy
• Psychosocial support, adherence capacity
• Biomarkers, genetic profile

Tools Used

• Physical exam, history
• Laboratory tests (markers, organ function)
• Imaging (CT, MRI, PET, ultrasound)
• Biopsy/pathology
• Validated prognostic indices/scores (e.g., TNM, Child-Pugh, APACHE, Framingham)

Important Caveats

• Prognosis is probabilistic, not deterministic.
• Changes over time with new data, treatment advances, patient response.
• Population statistics ≠ individual outcome.
• Communication should be honest, compassionate, and tailored.

Prognosis informs shared decision-making but does not dictate fate.