Benign nevus in lymph node.
D003937:Diagnosis, Differential; D006801:Humans; D008198:Lymph Nodes / Q000473:pathology / Q000601:surgery; D008207:Lymphatic Metastasis; D008297:Male; D008545:Melanoma / Q000175:diagnosis*; D008875:Middle Aged; D009506:Nevus / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery