PMC4310096_01
Computed tomography scan of the pelvis showed a homogeneous mass in the prostate
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F1
Computed tomography scan of the pelvis showed a homogeneous mass lesion measuring 5.2 cm x 4.5 cm x 5.4 cm in the prostate [Figure 1].
Histopathology section shows sheets of atypical lymphoid cells with a high n/c ratio, round nuclei, coarse chromatin, inconspicuous nucleoli and scant granular cytoplasm along with a normal prostate gland. H and E, x40 magnification
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F2
Sections from all the prostatic cores except the right base medial revealed diffuse infiltration of medium to large-sized atypical lymphoid cells [Figure 2].
Atypical lymphoid cells are strongly positive for leukocyte common antigen, x40 magnification
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F3
Atypical lymphoid cells are strongly positive for CD20, x40 magnification
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F4
CD20 [Figure 4]. CD3, CK [Figure 5], PSA, Bcl2, Cyclin D1 [Figure 6] and synaptophysin were negative.
Atypical lymphoid cells are negative for Cytokeratin, x40 magnification
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F5
CD20 [Figure 4]. CD3, CK [Figure 5], PSA, Bcl2, Cyclin D1 [Figure 6] and synaptophysin were negative.
Atypical lymphoid cells are negative for cyclin D1, x40 magnification
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F6
CD20 [Figure 4]. CD3, CK [Figure 5], PSA, Bcl2, Cyclin D1 [Figure 6] and synaptophysin were negative.