Unlike lipomas and infiltrative lipomas, these rare, fatty tumors are malignant and can spread to the animal?s lungs, bones, and other organs.?Liposarcomas can be diagnosed through either cytology or histopathology,? said Dr. Ho. ?It really depends on the biological behavior of the tumor, and most of time they can be asymptomatic.?Since liposarcomas are malignant, and potentially can spread to oth