PMC4782404_01
(a) Two cohesive clusters of cells in a background of abundant alveolar macrophages (x200) (b) Higher magnification of cells arranged in acinar pattern. (x200) (c) Malignant cells stained with PSA. (PSA, x400) (d) Corresponding biopsy demonstrating metastatic prostatic adenocarcinoma (H and E, x400)
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F1
The cells were positive for PSA immunostain [Figures 1a-c]. The corresponding histology specimen demonstrated acinar pattern in a background of dense fibrous tissue [Figure 1d].