Obstructive right ventricular outflow tract myxosarcoma in an adult dog

Retroperitoneal myxosarcoma in a cat

“…1 Although most myxosarcomas in canines occur as subcutaneous neoplasms of the trunk or limbs, they have also been reported in the heart, eye, spleen, brain, temporomandibular joint, vertebra, and lungs. [3][4][5][6][7][8][9][10] There are at least two reports available on myxosarcomas in cats, which describe one myxosarcoma arising from the kidney and one arising from the hindlimb musculature. 11,12 Both reports describe different tumor locations (muscle and kidney) and survival (both cats alive at 6 and 14 months after surgery).…”

“…These tumors are infrequently diagnosed in middle‐aged or older dogs and cats, and of the available literature, they are more commonly reported in dogs 1 . Although most myxosarcomas in canines occur as subcutaneous neoplasms of the trunk or limbs, they have also been reported in the heart, eye, spleen, brain, temporomandibular joint, vertebra, and lungs 3–10 . There are at least two reports available on myxosarcomas in cats, which describe one myxosarcoma arising from the kidney and one arising from the hindlimb musculature 11,12 .…”