PMC9290088_01
In the sagittal T2 view, low signal lobulated mass in superoposterior portion of bladder wall measuring 7.2 cm x 5.7 cm in diameter with significant enhancement in post contrast image shown by the red arrow.
10.1177_2050313X221111671-fig1.jpg
PMC9290088_01_10.1177_2050313X221111671-fig1.jpg
fig1-2050313X221111671
Magnetic resonance imaging (MRI) demonstrated a lobulated mass at the posterior aspect of the urinary bladder with 7.2 cm x 5.7 cm in diameter, which was presented as uterine leiomyoma (Figure 1). Furthermore, a small intramural mass was indicated at the aspect of the uterus with measures approximately 1 cm x 1 cm in diameter (Figure 1).
Grossly, the mass is white-red in color.
10.1177_2050313X221111671-fig2.jpg
PMC9290088_01_10.1177_2050313X221111671-fig2.jpg
fig2-2050313X221111671
The reddish-white mass was noticed in the posterior aspect of the bladder wall thus partial cystectomy was performed (Figure 2).
Bundles of elongate cells with eosinophilic cytoplasm and oval nuclei (H&E staining, x40).
10.1177_2050313X221111671-fig3.jpg
PMC9290088_01_10.1177_2050313X221111671-fig3.jpg
fig3-2050313X221111671
The pathology of bladder mass revealed a benign mesenchymal neoplasm composed of interlacing bundles of smooth muscle fibers with a whirling pattern (Figure 3) which the diagnosis of bladder leiomyoma was confirmed (Figure 4).
Immunostaining for smooth muscle actin shows diffuse and strong cytoplasmic positivity in smooth muscle cells.
10.1177_2050313X221111671-fig4.jpg
PMC9290088_01_10.1177_2050313X221111671-fig4.jpg
fig4-2050313X221111671
The pathology of bladder mass revealed a benign mesenchymal neoplasm composed of interlacing bundles of smooth muscle fibers with a whirling pattern (Figure 3) which the diagnosis of bladder leiomyoma was confirmed (Figure 4).