Rusty (10 yo, Springer Spaniel) presented to our internal medicine service for an ultrasound. The internist found two very small nodules on his spleen. We monitored the nodules closely; and at his recheck ultrasound, the nodules had grown in size. Rusty had the spleen removed here at VSC and the biopsy report came back that Rusty had a leiomyosarcoma. Leiomyosarcoma is a type of soft tissue sarcoma. Soft tissue sarcomas can develop in muscle, fat, blood vessels, or any of the other tissues that support, surround and protect the organs of the body. Leiomyosarcoma is one of the more common types of soft tissue sarcoma. Rusty finished up a course of chemotherapy and celebrated his graduation in style with custom “Rusty” cupcakes made by mom!