Metastatic Epicardial Leiomyoma with uncertain malignant potential

Abstract

A 49-year-old female with history of uterine leiomyoma and intermittent shortness of breath presented to the emergency department with new onset of tachycardia and chest pain. Subsequent cardiac work up revealed hypoechoic mass compressing the right ventricle. Computer tomography guided biopsy for tissue characterization revealed a benign spindle cell tumor. Surgical resection of a large epicardial tumor was undertaken. The histologic examination of the tumor was consistent with Estrogen and Progesterone positive leiomyoma of uncertain malignant potential. To the authors' knowledge, this is the first case report of a metastasizing epicardial leiomyoma that exhibits an unknown malignant potential. This case brings together common gynecologic disorder with complex thoracic surgery diagnosis and management. Differential diagnosis of cardiac tumors in patients with history of uterine leiomyoma should include metastasizing leiomyoma. The mainstay of therapy is surgical resection with immediate symptom relieve.

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