Computed Tomography Reveals Atypical Localization of Benign Mediastinal Tumors

Junpei Ikezoe Department of Radiology and the First Department of Surgery, Osaka University Medical School, Fukushima-Ku, Osaka, Japan; Department of Radiology, Shinshu University School of Medicine, Matsumoto, Japan; Department of Internal Medicine, Kinki Central Hospital, Itami, Japan

S. Sone Department of Radiology and the First Department of Surgery, Osaka University Medical School, Fukushima-Ku, Osaka, Japan; Department of Radiology, Shinshu University School of Medicine, Matsumoto, Japan; Department of Internal Medicine, Kinki Central Hospital, Itami, Japan

S. Morimoto Department of Radiology and the First Department of Surgery, Osaka University Medical School, Fukushima-Ku, Osaka, Japan; Department of Radiology, Shinshu University School of Medicine, Matsumoto, Japan; Department of Internal Medicine, Kinki Central Hospital, Itami, Japan

S. Takashima Department of Radiology and the First Department of Surgery, Osaka University Medical School, Fukushima-Ku, Osaka, Japan; Department of Radiology, Shinshu University School of Medicine, Matsumoto, Japan; Department of Internal Medicine, Kinki Central Hospital, Itami, Japan

J. Arisawa Department of Radiology and the First Department of Surgery, Osaka University Medical School, Fukushima-Ku, Osaka, Japan; Department of Radiology, Shinshu University School of Medicine, Matsumoto, Japan; Department of Internal Medicine, Kinki Central Hospital, Itami, Japan

S. Hamada Department of Radiology and the First Department of Surgery, Osaka University Medical School, Fukushima-Ku, Osaka, Japan; Department of Radiology, Shinshu University School of Medicine, Matsumoto, Japan; Department of Internal Medicine, Kinki Central Hospital, Itami, Japan

K. Nakahara Department of Radiology and the First Department of Surgery, Osaka University Medical School, Fukushima-Ku, Osaka, Japan; Department of Radiology, Shinshu University School of Medicine, Matsumoto, Japan; Department of Internal Medicine, Kinki Central Hospital, Itami, Japan

N. Kojiro Department of Radiology and the First Department of Surgery, Osaka University Medical School, Fukushima-Ku, Osaka, Japan; Department of Radiology, Shinshu University School of Medicine, Matsumoto, Japan; Department of Internal Medicine, Kinki Central Hospital, Itami, Japan

M. Ito Department of Radiology and the First Department of Surgery, Osaka University Medical School, Fukushima-Ku, Osaka, Japan; Department of Radiology, Shinshu University School of Medicine, Matsumoto, Japan; Department of Internal Medicine, Kinki Central Hospital, Itami, Japan

T. Kozuka Department of Radiology and the First Department of Surgery, Osaka University Medical School, Fukushima-Ku, Osaka, Japan; Department of Radiology, Shinshu University School of Medicine, Matsumoto, Japan; Department of Internal Medicine, Kinki Central Hospital, Itami, Japan

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Abstract

Computed tomographic appearances of 147 surgically proven mediastinal tumors (113 benign and 34 malignant lesions) were evaluated paying special attention to their localization or extension. Ten of the 113 benign lesions (9%) showed atypical or unique localization or extension, and were divided into three groups. In the first group, two lymphangiomas and one bronchogenic cyst spread over both the precardiovascular and the retrocardiovascular compartments, mimicking a malignant lesion. In the second group, the single cases of thymic hypertrophy, thymic cyst, schwannoma, and pericardial cyst were located atypically in the retrocardiovascular compartment. In the last group, two esophageal leiomyomas and one esophageal duplication showed upward and downward longitudinal extension beyond the azygos arch and the aortic arch.

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Computed Tomography Reveals Atypical Localization of Benign Mediastinal Tumors

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Computed Tomography Reveals Atypical Localization of Benign Mediastinal Tumors

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