15GEN5 Peritoneal washing NMCS 838f9143 8690 9304 0bca 96af1b1d8a45

General Cytopathology 15GEN5 Specimen: Peritoneal washing Clinical Notes: Female, 31 years. Ovarian cyst and pelvic pain. Expected Response: No malignant cells seen

Figure 1. Large flat sheets of mesothelial cells with spindled and epithelioid appearance (Pap).

Figure 2. Benign appearing mesothelial cells lying in flat sheets (DQ).

Figure 3. Sheets of benign mesothelial cells. A collagen ball (arrow) is evident in this field (DQ).

Figure 4. Some variation in colour intensity among the sheets and single cells (Pap).

Figure 5. Delicate nuclear membrane and finely and evenly dispersed chromatin (Pap).

Figure 6. Mesothelial cells are histiocytoid and epithelioid in appearance (DQ).