Case Report

Upper Gastrointestinal Bleed due to Duodenal Metastases of Lung Adenocarcinoma: Report of Two Cases and Review of Literature

Figure 3

Immunohistostaining of the duodenal biopsies demonstrated (a) CK7-positive, (b) CK20-negative, and (c) TTF1-positive.
(a)
(b)
(c)