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(A) Classic DCIS (upper right) and adjacent lymphovascular tumor embolus (lower left) exhibits E-cadherin immunoreactivity. (B) The lymphovascular tumor embolus in A (higher magnification) exhibits E-cadherin immunoreactivity. (C) DCIS transitioning to possible LVI exhibits E-cadherin immunoreactivity. (D) DCIS exhibits Ki-67 immunoreactivity. (E) The lymphovascular tumor embolus (left) exhibits Ki-67 immunoreactivity.
