Mesothelioma Diagnosis Biomarkers and Lab Tests 1

Question 1

Which serum biomarker is most widely used to support a diagnosis of malignant pleural mesothelioma?

Accepted Answer

Mesothelin (SMRP)

Answer

Soluble mesothelin-related peptide (SMRP) in serum is the most validated blood biomarker for malignant mesothelioma, approved by the FDA as an adjunct diagnostic tool.

Question 2

Fibulin-3 as a mesothelioma biomarker is measured in which biological fluid?

Accepted Answer

Plasma and pleural fluid

Answer

Fibulin-3 levels can be measured in both plasma and pleural fluid and have shown promise as a mesothelioma diagnostic and prognostic biomarker.

Question 3

What is the clinical utility of serum SMRP levels in mesothelioma?

Accepted Answer

Monitoring disease progression and treatment response

Answer

SMRP levels correlate with tumor burden and can be used to monitor disease progression and response to treatment, though they cannot replace biopsy for diagnosis.

Question 4

Which biomarker found in pleural fluid is used to differentiate malignant from benign pleural effusions?

Accepted Answer

Mesothelin

Answer

Elevated mesothelin levels in pleural fluid support a malignant mesothelioma diagnosis and help distinguish it from benign causes of effusion.

Question 5

Elevated serum SMRP is most specific for which mesothelioma cell type?

Accepted Answer

Epithelioid

Answer

SMRP is primarily expressed by epithelioid mesothelioma cells; sarcomatoid tumors express little to no mesothelin, reducing biomarker sensitivity in those cases.

Mesothelioma Diagnosis Practice Test

Mesothelioma Diagnosis Practice Test

Mesothelioma Diagnosis Biomarkers and Lab Tests 1