We report a rare case of benign metastasizing leiomyoma in the heart of a 45-year-old woman 2 years after a uterine leiomyoma had been discovered during hysterectomy. Computed tomograms at presentation showed a large mixed cystic mass in the pelvis and bilateral lung nodules suggestive of metastatic disease. A large cardiac mass, attached to the chordae of the tricuspid valve and later shown to be histopathologically consistent with uterine leiomyoma, was successfully resected through a right atriotomy. This case suggests that benign metastasizing leiomyoma should be considered in the differential diagnosis of right-sided cardiac tumors.

中文翻译：

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45 岁女性心脏良性转移性平滑肌瘤

我们报告了一名 45 岁女性在子宫切除术中发现子宫平滑肌瘤 2 年后心脏良性转移性平滑肌瘤的罕见病例。就诊时的计算机断层扫描显示骨盆中的大混合囊性肿块和双侧肺结节提示转移性疾病。通过右心房切开术成功切除了附着在三尖瓣腱索上并随后在组织病理学上与子宫平滑肌瘤一致的大心脏肿块。该病例提示在右侧心脏肿瘤的鉴别诊断中应考虑良性转移性平滑肌瘤。