Spontaneous middle lobe torsion in a patient with multicentric Castleman disease: A case report.

We describe a rare case of middle lobe lung torsion in a patient with a tension hydrothorax secondary to multicentric Castleman disease. The case demonstrates the difficulty of diagnosing torsion prospectively, and the possible sequelae of delayed detection. Although imaging features can be confusing, an awareness of this condition and careful image interpretation by radiologists could facilitate early recognition and management of a torted lobe.