Melanoma Causes, Symptoms, and Treatment in Columbus, Ohio Rixis Dermatology Melanoma Skin Cancer Symptoms, Treatment Froedtert & MCW Nodular melanoma Acral lentiginous melanoma Types of melanoma Amelanotic melanoma is challenging to recognize clinically because of absence of pigment and its resemblance to a variety of benign and malignant neoplasms. Detection often occurs at late or metastatic stages, leading