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  Indian J Med Microbiol
 

Figure 2: (a) Pleural fluid cytology showing atypical cells with high nuclear cytoplasmic ratio and hyperchromasia in a case of malignant pleural effusion (Pap, ×400). (b) Cell block histology of the same fluid confirms the presence of atypical cells (H and E, ×100). (c) Immunohistochemistry of the same cell block shows cytoplasmic positivity of CK20 in the malignant cell clusters (CK 20, ×100). (d) Cervical cytology smear in a case of low-grade squamous intraepithelial lesion (PAP, ×400)

Figure 2: (a) Pleural fluid cytology showing atypical cells with high nuclear cytoplasmic ratio and hyperchromasia in a case of malignant pleural effusion (Pap, ×400). (b) Cell block histology of the same fluid confirms the presence of atypical cells (H and E, ×100). (c) Immunohistochemistry of the same cell block shows cytoplasmic positivity of CK20 in the malignant cell clusters (CK 20, ×100). (d) Cervical cytology smear in a case of low-grade squamous intraepithelial lesion (PAP, ×400)