Pseudo-cannon ball presentation, a chest radiograph pitfall

Multiple pulmonary opacities on chest radiographs, often construed as cannon balls, are the classical presentation of haematogenous dissemination of malignancy to lungs. In contrast, such presentation may be associated with a non-malignant, extra-pulmonary aetiology. Thus, such radiographs require meticulous interpretation. We present a case report of a young patient who suffered from spontaneous rib fractures, mimicking cannon balls appearance with a review of literature. Conclusion: Attention to past medical history coupled with recognising the cannonball like pattern on chest radiographs is paramount in order to reach the most likely diagnosis. *Correspondence to: Aws Alfahad, Consultant Interventional Radiologist, Radiology Clinical Tutor and Specialty lead, The Pennine Acute Hospitals Trust, Northern Care Alliance Manchester, UK, E-mail: drawsalfahad@yahoo.com