D19: Benign neoplasm of mesothelial tissue

D19.7: Benign neoplasm: Mesothelial tissue of other sites

When there is abnormal growth of tissue, then this is also referred to as a tumor. The tissue in the body is made up of cells. A tumor disorder involves the cells multiplying more than normal. This results in abnormal or excess tissue forming. A tumor can be benign or malignant. The tumor you have is benign. Benign tumors do not destroy the healthy tissue and do not spread throughout the body.

The organs in the body are surrounded by a thin membrane. This thin membrane helps the organs to glide past each other better. The tumor you have is in this thin membrane.

If the tumor is small, then you usually have few or no symptoms. If the tumor is large, this can cause various symptoms.