👉 A fibronectin-rich mesenchymal tumor (Fernandes, 1980) is a type of primary neoplasm that arises from the basement membrane of the developing human embryo. This tumor can be found in the bone and joint tissue, but it also appears in other tissues such as the skin, muscles, and connective tissue. In this case, the term "fibroneuroma" refers to a type of fibronectin-rich mesenchym
