Tumor tissue, including soft and/or bony tissue, are harvested from a subject and morcellated. The morcellated tissue is placed in a cartridge which is placed in a containment chamber of a tumor tissue processing device. Cancer cells in the morcellated tumor tissue are destroyed without destroying tumor antigens therein. These cells are destroyed cryogenically by exposing the cartridge to a cooling fluid such as liquid nitrogen, optionally with a warming cycle, and optionally with more than one freezing/thawing cycle. The treated tissue and/or cells are then extracted from the cartridge and reintroduced to the subject after they have reached a threshold condition. The treated tissue and/or cells can be reintroduced via a containment sleeve or a reimplantation bag.