Torsion of right lung sequestration mimicking a posterior mediastinal mass presenting as acute abdomen: Usefulness of MR imaging

Risa Yokota; Keiko Sakamoto; Hiroshi Urakawa; Morishige Takeshita; Kengo Yoshimitsu

doi:10.1016/j.radcr.2019.02.008

Torsion of right lung sequestration mimicking a posterior mediastinal mass presenting as acute abdomen: Usefulness of MR imaging

Radiol Case Rep. 2019 Feb 25;14(5):551-554. doi: 10.1016/j.radcr.2019.02.008. eCollection 2019 May.

Authors

Risa Yokota¹, Keiko Sakamoto¹, Hiroshi Urakawa¹, Morishige Takeshita², Kengo Yoshimitsu¹

Affiliations

¹ Department of Radiology, Faculty of Medicine, Fukuoka University, 7-45-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan.
² Department of Pathology, Faculty of Medicine, Fukuoka University, 7-45-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan.

Abstract

A 15-year-old boy with extralobar sequestration torsion is presented, who presented as an acute abdomen. Chest X-ray and computed tomography on admission revealed an apparent posterior mediastinal mass on the right side at the lower thoracic vertebral level. MR imaging, however, clearly showed scanty fluid around the mass and the subpleural fat layer between the vertebral body and the mass, suggesting its extrapulmonary and intrapleural cavity location. Its hemorrhagic nature was also suggested by the reduced signal on the in-phase as compared to out-of-phase chemical shift images, which helped make correct preoperative diagnosis.

Keywords: Extralobar sequestration; MR findings; Torsion.

Publication types

Case Reports