A 32-year-old woman presented with pain in the posterior right hemithorax for 3 months. The patient denied trauma. On physical examination, the patient reported pain with local compression. On auscultation, there was a reduction of the normal vesicular pulmonary sound in the upper third of the right hemithorax. Blood count test and C-reactive protein were normal. Chest computed tomography and magnetic resonance imaging were performed to investigate the symptoms (Figs. 1 and 2). A biopsy confirmed the final diagnosis (Fig. 3).

Fig. 1
figure 1

Chest computed tomography (CT). Mediastinal (a) and bone windows (b), in the axial plane. Chest CT in the oblique sagittal plane, in the bone window (c)

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Fig. 2
figure 2

Chest magnetic resonance imaging (MRI). T1- (a), T2-weighted imaging (b), short tau inversion recovery (c), T1-weighted imaging with fat saturation after intravenous gadolinium injection (d), and color-coded semi-quantitative dynamic contrast-enhanced (DCE) perfusion-weighted imaging (e), in the axial plane. Time-signal intensity curve analysis of the perfusion weighted imaging

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Fig. 3
figure 3

Histopathological examination. (a) Hematoxylin and eosin staining (original magnification, 40X). (b) Hematoxylin and eosin staining (original magnification, 200X)

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