PMC6941604_01
Magnetic resonance imaging (MRI): showed an enlarged prostate with abnormal morphology, a large prostate compressing against bilateral seminal vesicles, the anterior wall of rectum and other adjacent pelvic structures, several foci with abnormal signal mixed in the prostate. (A) T1WI and (B) T2WI.
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MRI showed 1) an enlarged prostate with abnormal morphology, 2) a large prostate compressing against bilateral seminal vesicles, the anterior wall of rectum and other adjacent pelvic structures, 3) several foci with abnormal signal mixed in the prostate (Figure 1).
Histopathology and immunohistochemistry of the tumor. (A-C) H & E staining showed disordered diffusion of tumor cells, mainly composed of spindle and epithelioid cells. (C) The karyokinetic phase of the tumor cell was observed (<5/10 HPFs). Immunohistochemical examination showed diffusely positive for CD117 (D), CD34 (E) and DOG-1 (F). (Magnification: A, D, E, F, x50; B, x100; C, x200).
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The microscopic examination showed that neoplasm was composed of spindle cells and epithelioid cells (Figure 2A-C). The immunohistochemistry analysis showed strong positivity for CD117, CD34 and DOG-1 (Figure 2D-F), but negative for S-100, desmin, smooth muscle actin (SMA) and cytokeratin (CK).