Extrinsic pulmonary artery stenosis caused by anterior mediastinum teratoma presenting with an ejection systolic murmur is a rare phenomenon. Till date, 15 cases have been reported (inclusive of this case) in the English literatures. Herein we report a 20 year old female with extrinsic pulmonary artery stenosis because of compression by an anterior mediastinal teratoma with a loud ejection systolic murmur. The case report aims to highlight the awareness of such rare presentation of anterior mediastinal teratomas that may mimic congenital valvular heart diseases among clinicians.
Myxomatous Mitral Valve Disease is a degenerative condition of the mitral valves leaflets. A 10-year-old
male castrated Shih Tzu was presented with primary complaint of coughing. Clinical examination revealed normal
heart rate, respiratory rate and rectal temperature. Systolic murmur Grade IV/VI was heard at the left heart apex.
Thoracic radiographic findings were cardiomegaly with the vertebral heart score of 11.0 and had evidence of
cardiogenic pulmonary edema. Echocardiographic examination revealed thickening mitral valves with evidence of
moderate regurgitation observed. Based on the findings obtained, the dog was diagnosed with Myxomatous Mitral
Valve disease stage C2. Dog was treated with benazepril (0.5mg/kg), pimobendan (0.2mg/kg) with a combination of
furosemide (2mg/kg). Frusemide was gradually removed from the treatment regime as coughing improved over time.
The dog was no longer lethargy and even gained weight.