What type of fibrosis causes lumps?

Lumps in tissues can be caused by several types of fibrosis, but one common type is desmoplastic fibrosis, often associated with tumors. This condition leads to the formation of dense connective tissue, resulting in palpable lumps. Another example is cystic fibrosis, which can lead to the formation of fibrous tissue in organs like the lungs, although it typically presents more complex symptoms than just lumps. Overall, fibrosis can result in abnormal tissue growth, leading to lump formation in affected areas.