13-year-old castrated male Terrier

Murmur

  • Echo – solid mass lesions (two) within RV and LV myocardium.
  • Pericardial effusion, possible tamponade
  • Neoplasia – lymphosarcoma, thyroid carcinoma, rhabdomyosarcoma; hemangiosarcoma and heart based neoplasia considered less likely because of the multifocal nature of the lesions.