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- Extranodal diseaseExtranodal disease means lymphoma that occurs in parts of the body outside the lymphatic system. Most lymphomas occur within the lymphatic system, which consists of a network of lymph glands connected by lymph vessels plus the tonsils, spleen and liver.
- ExtraocularMeans outside the eyeball. If a cancer that has started in the eye is called extraocular, it means it has spread outside the eyeball itself to the optic nerve or eye socket.
- Extrapleural pneumonectomyAn operation to remove the lung, the tissues that cover it (the pleura), part of the diaphragm and the tissue covering the heart (the pericardium). This operation is sometimes used to treat mesothelioma.