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  Indian J Med Microbiol
 

Figure 2: Ascitic fluid cell block preparation at the time of progression on osimertinib showed metastatic adenocarcinoma (a; hematoxylin and eosin, ×20). Tumor cells were strongly and diffusely positive for TTF-1, confirming the pulmonary origin (b; 3,3'-diaminobenzidine [DAB], ×20). In addition, the tumor cells also expressed cytoplasmic and membranous staining (c; DAB, ×20) along with nuclear positivity for beta-catenin in few cells (d [arrowhead]; DAB, ×40)

Figure 2: Ascitic fluid cell block preparation at the time of progression on osimertinib showed metastatic adenocarcinoma (a; hematoxylin and eosin, ×20). Tumor cells were strongly and diffusely positive for TTF-1, confirming the pulmonary origin (b; 3,3'-diaminobenzidine [DAB], ×20). In addition, the tumor cells also expressed cytoplasmic and membranous staining (c; DAB, ×20) along with nuclear positivity for beta-catenin in few cells (d [arrowhead]; DAB, ×40)