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At low power, the Luschka ducts appear as lobular aggregates of ducts within the gallbladder subserosa (A). At higher power magnification (B), the glands are surrounded by concentric fibrosis, maintain a lobular architecture, and demonstrate bland cytology. Individual fields of this case demonstrated distorting fibrosis (C) and mild cytologic atypia (D), which raised the possibility of neoplasia.
