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Representative photomicrograph of a histological section from a bronchoscopic specimen collected from a 62-year-old man that was admitted to the outpatient department complaining of a 3-week history of pain in the right elbow showing a poorly differentiated carcinoma. Haematoxylin and eosin, scale bar 20 µm. The colour version of this figure is available at: http://imr.sagepub.com.
