👉 A lepromatous is a type of cancer that affects the lining of the lungs. It occurs in people with certain genetic mutations, and it can be caused by environmental factors or exposure to toxins. The exact cause of this cancer is not fully understood, but some theories suggest that it might be related to a mutation in the gene responsible for regulating the production of mucus, which helps keep the airways clean. This mutation could lead to an imbalance in the production and breakdown of mucus,