Pulmonary metastases: A rare manifestation of the most common cancer

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Basal cell carcinoma (BCC) is the most common human malignancy but rarely metastasises. We report on two patients with symptomatic lung metastases and a past history of recurrent BCC excisions. In our first patient, a heavy smoker with multiple lung lesions, histology of a resected nodule was first reported as non-small cell lung cancer but a repeat nodule biopsy a year later was recognised as a pulmonary metastasis from primary cutaneous BCC. Our second patient, a young never-smoker with two previous BCC, was confirmed as having a pulmonary metastasis from BCC on the lung resection specimen. Pulmonary metastasis from an unidentified primary site is a common clinical situation. These patients emphasise the importance of considering the most common cancer as a potential primary.

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