After the immune system destroys melanoma tumors, visible melanin can be left behind. We tracked tumoral melanosis in a case series of patients on immunotherapy and offer suggestions for how to monitor CT scan showing metastatic recurrence of melanotic schwannoma in the Download Scientific Diagram Malignant melanotic nerve sheath tumors in the spinal canal of psammomatous and non psammomatous type: Two case reports What is Metastatic Melanoma? Forefront Dermatology