Dr. Muldoon left a message on December 9, 2010 at 8:30 p.m. Chicken was diagnosed with vaccine associated malignant fibrous histiocytoma. Her margins were clean, but close. This means that they think all of the cancer was cut out but that there was <1 cm. between the edge of the cut and the cancer. Her prognosis on the biopsy report was listed as "guarded".