Malignant melanoma of the oral cavity.
D000328:Adult; D044383:Black People; D006801:Humans; D007573:Jaw Neoplasms / Q000453:epidemiology / Q000401:mortality; D008297:Male; D008545:Melanoma / Q000453:epidemiology / Q000401:mortality; D009062:Mouth Neoplasms / Q000453:epidemiology / Q000401:mortality; D009549:Nigeria