A para aortic malignant melanotic nerve sheath tumor mimicking a gastrointestinal stromal tumor: a rare case report and review of literature BMC Surgery Springer Nature Link Melanotic schwannoma mimicking metastatic pigmented melanoma: a pitfall in cytological diagnosis A Rare Case of Aggressive Melanotic Schwannoma Occurred in Spinal Nerve of a 59 Year Old Male Melanoma Metastases versus Neurocysticercosis; the Importance of Correct Interpretation of MR Findings Clinical Case Reports Journal (ISSN 2767 0007) Melanocytic nevi and malignant melanoma Medizinonline