Halo congenital nevus.
Kerr
Olga Ann
OA
Schofield
Olivia
O
D001415:Back; D002648:Child; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007717:Knee; D008297:Male; D009508:Nevus, Pigmented / Q000151:congenital / Q000175:diagnosis* / Q000473:pathology