Conclusion
Cardiac leiomyosarcoma is an extremely rare tumor with a poor prognosis,
and frozen section guided complete resection is the key to the
treatment. Adjuvant chemoradiotherapy may further prolong survival and
regular echocardiography should be followed up after the operation. The
right submammarian thoracotomy approach has the advantages of its less
invasive nature and suitability for complete tumor resection with
lobectomy.