Melanoma causing black urine

What is it about?

The report describes the case of a patient who suffered from malignant melanoma that affected the color of his skin and body fluids. His skin color became dark gray, his urine turned black upon exposure to light, and fluids around his lungs turned became black colored when drained out and exposed to light. These signs are extremely rare. Our purpose is to draw the attention of doctors to these rare signs of melanoma

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