PMC5509191_01
A bladder mass with (a) heterogeneous high-mid signal intensity on T1-weighted imaging as well as (b) mid signal intensity on T2-weighted imaging
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F1
The mass had heterogeneous high mid-signal intensity on T1-weighted images [Figure 1a] and mid-signal intensity on T2-weighted images [Figure 1b].
Cystoscopic findings show a bulging mass with marked vascularity over the left lateral wall of the bladder
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F2
Cystoscopy revealed a bulging mass with a broad base over the left lateral wall of the bladder [Figure 2].
Axial computerized tomography sections reveal a 1.7 cm x 2.4 cm mass (arrow) over the left lateral wall of the bladder with no extravesical invasion
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F3
Computed tomography (CT) of the abdomen demonstrated a mass up to 2.4 cm in the greatest dimension over the left wall of the bladder [Figure 3].
(a) The tumor is composed of cell balls of neoplastic cells with small oval granular nuclei and abundant granular cytoplasm (H and E, x200). (b) The tumor cells are positive for chromogranin (immunohistochemical, x200)
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F4
Immunohistochemical stain showed that the tumor cells were positive for chromogranin [Figure 4] and negative for CK7 and CK20.