PMC9118416_01
Computed tomography (CT) images - axial (a) and coronal (b) views - showing a large mass involving the dome and part of the anterior wall of the bladder.
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A staging computed tomography (CT) of the abdomen and chest (Figure 1) confirmed a large, lobulated mass arising from the superior and anterior portion of the bladder measuring 4.9 cm x 4.5 cm in size, which contained some low-density central changes in keeping with necrosis and areas of peripheral calcification.
Microscopic images showing spindled and plump polygonal myofibroblasts dispersed in an oedematous and myxoid background with intermingled inflammation (a); compact spindle cell proliferation with a variable myxoid and collagenised stroma with distinctive inflammatory infiltrate (b) and interlacing bundles of spindle cells intermingled with plasma cells and lymphocytes (c).
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Histopathology (Figure 2) noted an admixture of spindle cells, fibroblastic/myofibroblastic cells and inflammatory cells.