Bladder malacoplakia: A case report

Figure 1 Intraoperative findings. A: Multiple pale yellow brain loop-like uplifts; B: Tumors being electrocuted; C: Proliferation of scattered inflammatory follicles.

Figure 2 Microscopic findings. A: Massive Michaelis–Gutman (M-G) bodies can be seen under microscope (Magnification × 200); B: Alkaline M-G bodies arranged in concentric circles as shown by arrows (Magnification × 400); C: Alkaline M-G bodies arranged in concentric circles as shown by arrows (Magnification × 600).

Figure 3 Immunohistochemistry findings. A: Vimentin (+) (Magnification × 100); B: CKpan (-) (Magnification × 100); C: CK5/6 (-) (Magnification × 100); D: CD68 (+) (Magnification × 100); E: CD163 (+) (Magnification × 100); F: Lysozyme (+) (Magnification × 100); G: MAC387 (-) (Magnification × 100); H: Ki-67 (+2%) (Magnification × 100); I: Michaelis–Gutman body periodic acid-Schiff staining shown in purple red (Magnification × 200).

Figure 4 Electron microscopy findings. A: Phagocytic lysosomes in the cytoplasm of macrophages; B: Microbubble; C: A typical Michaelis–Gutman (M-G) body as shown by arrows; D: Large number of bacteria in phagocytic lysosomes; E: Some bacteria were digested and dissolved; F: Myelin figure.

Figure 5 Postoperative review. A: Scar in the electrotomy area; B: Electrocoagulation scar.