Figure 12 Cardiac gossypiboma Figure 12 | Cardiac gossypiboma. a | Echocardiogram showing a foreign body (arrow) located posterior to the left atrium within the oblique pericardial sinus. b | The cut surface shows small, partially degenerating fibres. c | The woven nature of the degenerating fabric is evident histologically when the specimen is viewed in cross-polarized light. Maleszewski, J. J. et al. (2017) Pathology, imaging, and treatment of cardiac tumours Nat. Rev. Cardiol. doi:10.1038/nrcardio.2017.47