Primary pulmonary malignant melanoma is an extremely rare tumor, and its diagnosis is just as difficult to clinically verify. Since malignant melanomas can metastasize even after many years, detailed past medical history and thorough physical examination of the patient are imperative in verifying the diagnosis. In this article, where we present a case with a histopathological diagnosis of malignant melanoma, we would like to emphasize that malignant melanoma can metastasize even many years after treatment.