Adenomatoid tumors are benign growths made up of mesothelial cells that can occur in the reproductive system, most commonly in the testicles. They can cause pain and may be difficult to distinguish from cancerous tumors. Surgery is usually required, but removal of the entire testicle is not necessary. Adenomatoid tumors can also develop in other parts of the body, but this is rare.
An adenomatoid tumor is a type of abnormal growth that occurs primarily in the reproductive system. Although these tumors are found in women, where they can grow from structures such as the uterus or fallopian tubes, they are most commonly found in the testicles in men, around the age of 20 to 50. An adenomatoid tumor is known as a benign mesothelial tumor, which means that it is not cancerous and is made up of what are called mesothelial cells. Adenomatoid tumors are usually removed surgically. While they aren’t cancer, they can cause pain and can be difficult to distinguish from some cancerous tumors.
Most often, an adenomatoid tumor in the testicle appears as a small, slowly growing solid lump that can only be noticed by chance. Sometimes, its presence can cause an enlarged testicle or, occasionally, there may be pain. A diagnosis of adenomatoid tumor can begin by examining the lump. A test such as an ultrasound may then be done, which provides more information about the texture, shape, and location of the tumor.
Although adenomatoid tumors are usually solid, they can also contain spaces or cysts. If a sample of the tumor tissue is analyzed to confirm the diagnosis, this can allow the surgeon to perform less extensive surgery, knowing the growth is benign. Surgery is also usually needed if the tumors are benign growths, meaning they don’t spread.
In the case of a testicular tumor, surgery for the adenomatoid tumor does not usually require removal of the entire testicle, but rather the growth itself is cut off to avoid future problems. After the tumor is removed, its cells are analyzed in detail using a microscope to ensure that the diagnosis is correct. This is important because, at times, it may be difficult to differentiate an adenomatoid tumor from a cancer that may require more aggressive treatment.
In addition to being found in the genital regions, adenomatoid tumors can develop in other parts of the body, such as the adrenal glands or heart, although this is rare. In the case of the female reproductive system, an adenomatoid tumor of the uterus could cause symptoms such as abnormal periods or a lump in the abdomen. Smaller tumors may cause no symptoms and may be found incidentally during surgery for other conditions. An adenomatoid tumor usually presents as a single, isolated growth, although there has been one case report of a patient having a number of these tumors.
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