What is a Thymoma?

3. Sclerosing Thymoma

Doctors recognized sclerosing thymoma, a rare, fibrous tumor, for the first time in 1994 in a 65-year old man without symptoms. Despite the nodule on his chest, the man had no shortness of breath or chest pain. In other cases, the tumors were five to ten centimeters in diameter. Each had a hard, solid consistency like sclerotic tissue, which accounts for almost 90 percent of its the mass. In most cases, patients have the masses removed with no recurrence. Worldwide, there are fewer than 20 known cases.