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An infant presented with an umbilical lesion that had been present since birth.
The lesion was associated with clear drainage. There was no history of infection, cellulitis or other constitutional symptoms. Grossly the mass was fleshy red 1.0×1.0 cm, failed treatment by silver nitrate, after which it was surgically removed.
Histologically, part of the epidermis was preserved; however, there was an ulcerated lesion. Underneath the ulcerated surface was colonic mucosa associated with moderate chronic inflammation and occasional lymphoid follicles (figures 1 and 2 …