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68 year old female with stage 4 colon adenocarcinoma metastatic to the lungs. Permanent section pathology photomicrograph with hematoxylin and eosin (H & E) stains demonstrates metastatic adenocarcinoma consistent with colonic primary with a central hemorrhagic cavity (arrow). a (200X), 8b (100X), 8c (400X). August 2008.
