A 73-year-old man was admitted to our hospital. The patient had undergone resection of a skin tumour on the left side of the face 4 years ago, and postoperative pathology subsequently diagnosed the tumour as malignant melanoma of Clark level IV. No cancer cells were found at the resected margins, and the patient was treated with interferon and interleukin for more than 1 year after surgery. One month before admission to our hospital, an isolated metastatic lesion about 1.5 cm in diameter was identified in the upper lobe of the left lung, and thoracoscopic resection of the left upper lobe was performed. Postoperative pathology confirmed a malignant tumour in the upper lobe of the left lung that was consistent with pulmonary metastasis of melanoma.

Examination

Routine blood investigations, liver and kidney function tests, electrocardiography, and other examinations conducted in our hospital on the day after admission (December 28, 2016) showed no abnormalities, and the patient was given a dacarbazine/interleukin-2 regimen for 4 cycles. Subsequent pulmonary computed tomography (CT) in April 2018 suggested bilateral lung and left pleural metastases

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Lesion in the lung

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