Final answer:
Neoplastic diseases can cause papillary lesions in the body. Malignant neoplasms, such as pancreatic cancer and breast cancer, have the potential to invade surrounding tissues and form metastases.
Step-by-step explanation:
Papillary lesions can be caused by neoplastic diseases, which are abnormal growths of genetically altered cells. These neoplasms can be classified as malignant or benign. Malignant neoplasms are cancerous and have the potential to invade surrounding tissues and form metastases, while benign neoplasms do not invade other tissues and do not form metastases. Examples of malignant neoplastic diseases that can cause papillary lesions include pancreatic cancer, brain tumors, breast cancer, neuroblastoma, acute myeloid leukemia, multiple myeloma, and non-Hodgkin's lymphoma