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Figure 2: (a and b) Sections showing papillary serous carcinoma (a, H and E, ×400) with necrosis and calcification (b, H and E, ×400); (c and d) smears from pleural fluid revealing cluster of atypical cells in three-dimensional cluster with tumor cells showing marked pleomorphism, high nucleocytoplasmic ratio, irregular nuclear membrane, hyperchromatic nuclei, prominent nucleoli, and moderate amount of pale cytoplasm (c, Giemsa, ×1000); few with cytoplasmic vacuolation (d, Giemsa, ×1000); (E and F) cell block showing focal cluster of malignant epithelial cells (H and E; e, ×400 and f, ×1000) and estrogen receptor and progesterone receptor positivity (f, right upper and lower insets)

Figure 2: (a and b) Sections showing papillary serous carcinoma (a, H and E, ×400) with necrosis and calcification (b, H and E, ×400); (c and d) smears from pleural fluid revealing cluster of atypical cells in three-dimensional cluster with tumor cells showing marked pleomorphism, high nucleocytoplasmic ratio, irregular nuclear membrane, hyperchromatic nuclei, prominent nucleoli, and moderate amount of pale cytoplasm (c, Giemsa, ×1000); few with cytoplasmic vacuolation (d, Giemsa, ×1000); (E and F) cell block showing focal cluster of malignant epithelial cells (H and E; e, ×400 and f, ×1000) and estrogen receptor and progesterone receptor positivity (f, right upper and lower insets)