PMC4087258_01
(a) A computed tomography (CT) scan of the abdomen and pelvis showing a mass lesion, involving the dome of the urinary bladder, invading the rectus fascia and muscles. (b) CT scan of the abdomen and pelvis showing no evidence of the mass at the postoperative 6th month.
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fig1
A computed tomography (CT) scan of the abdomen and pelvis showed a mass lesion of about 5 x 4 x 3 cm in size, involving the urinary bladder dome and invading the rectus fascia and muscles (Figure 1(a)). CT scan of the abdomen and pelvis showed no evidence of the mass 6 months postoperatively (Figure 1(b)). Cystoscopic examination showed complete healing of the transurethral resection area in the bladder dome.
(a) Microscopically, there are a few neutrophils with some Actinomyces microorganisms and eosinophilic hyaline material (H&E, 200x). (b) Histochemically, the microorganisms are positive with PAS staining (PAS, 200x).
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fig2
The histopathological examination of the material showed Actinomyces microorganisms surrounded by inflammation (H&E, 200x, Figure 2(a); periodic acid Schiff, 200x, Figure 2(b)).