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Solitary Fibrous Tumor of the Urinary Bladder: A Case Report.
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HOME > J Pathol Transl Med > Volume 38(2); 2004 > Article
Case Report Solitary Fibrous Tumor of the Urinary Bladder: A Case Report.
Jong Sil Lee, Jeong Seok Hwa, Gyung Hyuck Ko, Jeong Hee Lee, Hwal Woong Kim
Journal of Pathology and Translational Medicine 2004;38(2):129-131
DOI: https://doi.org/
1Department of Pathology, Gyeongsang National University, College of Medicine, Jinju, Korea. hawk7023@chollian.net
2Department of Urology, Gyeongsang National University, College of Medicine, Jinju, Korea.
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Solitary fibrous tumor (SFT) most commonly affects the pleura and these tumors have been recently reported to be found in unusual locations. We describe here a solitary fibrous tumor of the urinary bladder that was removed from a 79-year-old man having a history of gross hematuria and dysuria. Transabdominal ultrasonography showed a huge soft tissue mass in the urinary bladder. The cut surface of the tumor showed a grayish-white, hemorrhagic and gelatinous appearance. Necrosis was not found. Microscopically, the tumor showed a proliferation of spindle or ovoid cells that were intervened by a collagenous stroma. A variety of growth patterns was identified but the so-called patternless pattern was the predominant one. The spindle cells had almost no mitotic figures, and there was very little or no nuclear atypia. Immunohistochemical stains showed a strong reactivity for CD34 and a focal reactivity for bcl-2. The ultrastructure of the tumor cells showed mesenchymal-myofibroblastic traits.


J Pathol Transl Med : Journal of Pathology and Translational Medicine