Abstract
A 44-year-old man demonstrating cold-like symptoms from the end of August 2013 was referred to us with abnormal shadows on his chest radiograph in September 2013. Clinical examination revealed a painless red-colored mass on the sole of his left foot that had enlarged over the course of one year. The left leg showed marked non-pitting edema that had gradually progressed over a month. A chest CT revealed mediastinal lymphadenopathy and diffuse interstitial septal thickening, and lymphangitic carcinomatosis was suspected. A lung biopsy and left inguinal lymph node biopsy revealed the diagnosis of amelanotic melanoma with lung metastasis.
