9 CFR § 311.11
Neoplasms
November 6, 2020
(a) An individual organ or other part of a carcass affected with a neoplasm shall be condemned. If there is evidence of metastasis or that the general condition of the animal has been adversely affected by the size, position, or nature of the neoplasm, the entire carcass shall be condemned.
(b) Carcasses affected with malignant lymphoma shall be condemned.