The invention provides a method of inhibiting tumor growth in a mammal, by administering to the mammal composition containing taurolidine, taurultam, or a biologically active derivative thereof. The thermal pack may have a single cavity wherein the body further comprises two or more baffles which restrict the flow of fluid through to keep the thermal fluid dispersed substantially uniformly in each cavity region between the baffles when the thermal pack is secured against the breast. The memory stores, in association with a rotation position stored in the memory, a rotation direction of the reflector rotated to the rotation position based on an input from the manual operation device.