Magnetic Resonance Imaging Features of Spontaneously Regressed Thymoma Report of 2 Cases

被引：1

作者：

Nakazono, Takahiko ^{[1
]}

Yamaguchi, Ken ^{[1
]}

Egashira, Ryoko ^{[1
]}

Satoh, Toshimi ^{[5
]}

Yamasaki, Fumio ^{[2
]}

Mitsuoka, Masahiro ^{[3
]}

Hayashi, Shinichiro ^{[4
]}

Kudo, Sho ^{[1
]}

机构：

[1] Saga Univ, Dept Radiol, Fac Med, Saga 8498501, Japan

[2] Saga Univ, Dept Pathol, Fac Med, Saga 8498501, Japan

[3] Saga Univ, Dept Thorac & Cardiovasc Surg, Fac Med, Saga 8498501, Japan

[4] Saga Univ, Dept Pulm Med, Fac Med, Saga 8498501, Japan

[5] Japanese Red Cross Kumamoto Hosp, Dept Pathol, Kumamoto, Japan

来源：

JOURNAL OF THORACIC IMAGING | 2009年 / 24卷 / 01期

关键词：

thymoma; regression; magnetic resonance imaging;

D O I：

10.1097/RTI.0b013e31818b6038

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

The authors describe 2 cases in which thymoma. spontaneously regressed. The first patient was a 49-year-old woman with myasthenia gravis. A chest radiograph on admission showed an anterior mediastinal mass that spontaneously decreased in size as shown on a radiograph obtained 2 weeks later. Surgical removal of the mass was performed and the histopathologic examination showed a type B2 thymoma with marked coagulation necrosis in the central area. The second patient was a 46-year-old woman who was hospitalized due to chest and back pain. A chest radiograph on admission showed an anterior mediastinal mass and bilateral pleural effusion. The mass decreased in size and the effusion disappeared as shown on a chest radiograph obtained 2 months later. Computed tomography-guided biopsy was performed, and histopathologic examination revealed thymoma with marked necrosis. In both cases, dynamic contrast-enhanced magnetic resonance images showed peripheral ringlike enhancement of the mass. The clinical and radiologic features of spontaneously regressed thymoma may be different from those of common thymoma.

引用

页码：62 / 65

页数：4

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