The formation of solid pseudopapillary tumors is associated with pancreatic disease and may also be due to genetic factors. Solid pseudopapillary tumors, also known as papillary and solid epithelial tumors of the pancreas, cystic solid tumors of the pancreas, and papillary cystic epithelial tumors, are rare exocrine tumors of the pancreas. It often occurs in young women and can occur in any part of the pancreas. Pseudopapillary tumors are possible when the pancreas has cystic or partially cystic masses, which are often manifested as an epigastric mass or epigastric pain. There is a genetic predisposition to solid pseudopapillary tumors, which may be related to similar female dietary and living habits, as well as active ovarian function. If you find a lump in the nipple with pain, you should consult a doctor and take treatment in time to avoid delaying your condition.