Department of Pathology, University of Maryland Medical Center, Baltimore, MD 21201, USA.
Hum Pathol. 2012 Jun;43(6):958-60. doi: 10.1016/j.humpath.2011.10.004. Epub 2012 Jan 25.
A 52-year-old woman had a well-circumscribed, mobile mass (1.8 × 1.7 cm) in the right atrium detected by echocardiography and confirmed by magnetic resonance imaging. Subsequent histologic evaluation of the mass revealed benign, ectopic hepatic tissue. Ectopic liver is a rare occurrence, and most frequent anatomical distribution of ectopic hepatic tissue is the region around the gallbladder. In exceptional cases, ectopic liver can be found within the thorax. The reported case demonstrates that ectopic liver should be included in the differential diagnosis of right atrial masses removed surgically.
一位 52 岁女性经超声心动图检查发现右心房有一个边界清楚、活动的肿块（1.8×1.7cm），并经磁共振成像证实。随后对肿块的组织学评估显示为良性异位肝组织。异位肝是一种罕见的情况，异位肝组织最常见的解剖分布区域是胆囊周围。在特殊情况下，异位肝也可出现在胸腔内。本报告病例表明，异位肝应纳入手术切除的右心房肿块的鉴别诊断中。
