MedicalTerminology DB

Meaning of stage I malignant mesothelioma: Cancer is found in the lining of the chest wall and may also be found in the lining of the lung, the lining of the diaphragm (the thin muscle below the lungs and heart that separates the chest from…

Definition of stage I malignant mesothelioma

Cancer is found in the lining of the chest wall and may also be found in the lining of the lung, the lining of the diaphragm (the thin muscle below the lungs and heart that separates the chest from the abdomen), or the lining of the sac that covers the heart on the same side of the chest. Also called localized malignant mesothelioma.

Written and maintained by James Murray Last updated July 21, 2026 Educational reference, not medical advice. Read the limitations.

For learning, not diagnosis. This glossary provides general educational information and is not a substitute for advice from a qualified healthcare professional. If you may be experiencing a medical emergency, contact local emergency services.