骨或软组织肉瘤肺转移的CT晕征

Manabu Hashimoto , Etuko Tate , Jiro Watarai , Masahiro Sasaki
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引用次数: 1

摘要

我们回顾了一系列骨或软组织肉瘤肺转移的患者,以评估CT晕征的频率和转移灶的CT特征。方法本研究纳入我院4年间收治的19例骨或软组织肉瘤肺转移患者。CT晕征定义为中央肺结节周围明显的磨玻璃混浊区(晕)。结果19例患者中有4例(21%)出现CT晕征。4例患者中1例有2个结节,CT表现为晕征;其他人有1个。所有5个带晕的结节边缘清晰。中心结节长轴4 ~ 78 mm,平均25.4 mm。光晕范围广泛,有4个小结节(长轴25mm)。1例组织学检查显示,光晕与肿瘤细胞的鳞状增殖相对应。结论骨或软组织肉瘤转移性结节有时表现为CT晕。小转移性结节的光晕可能很大。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
CT halo sign in cases of pulmonary metastasis from bone or soft tissue sarcoma

Aim

We reviewed a series of patients with lung metastases from bone or soft tissue sarcoma to evaluate the frequency of the CT halo sign and CT features of metastatic lesions showing this sign.

Methods

The study included 19 patients with lung metastasis from bone or soft tissue sarcoma treated during a 4-year period at our institution. The CT halo sign was defined as a central pulmonary nodule surrounded by a distinct zone of ground-glass opacification (halo).

Results

The CT halo sign was found in 4 (21%) of the 19 patients. One of the 4 patients had 2 nodules characterized by the CT halo sign; the others had 1. All 5 nodules with a halo had a well-defined margin. The long axis of the central nodules was 4–78 mm (mean, 25.4 mm). The area of the halo was extensive in 4 small nodules (long axis <25 mm). Histologic examination, performed in 1 case, showed that the halo corresponded to lepidic proliferation of tumor cells.

Conclusion

Metastatic nodules from bone or soft tissue sarcoma are sometimes characterized by a CT halo. The halo of small metastatic nodules can be large.

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