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  • Title: Signet-ring cell carcinoma arising from the urinary bladder.
    Author: Romics I, Székely E, Szendroi A.
    Journal: Can J Urol; 2008 Oct; 15(5):4266-8. PubMed ID: 18814817.
    Abstract:
    INTRODUCTION: Signet-ring cell carcinoma of the urinary bladder can be primary - arising from the bladder wall or urachus remnants - or metastatic from tumors originating in the stomach, colon, or breast. Saphir first described primary signet-ring cell cancer of the urinary bladder in 1955. Less than 100 cases have been reported in the literature since then. CASE REPORT: We report a case of a 45-year-old woman who was admitted with gross hematuria. Cystoscopy revealed a necrotic tumor on the left bladder wall. A transurethral biopsy showed signet-ring cell carcinoma. The bladder tumor was diagnosed as the primary one. Radical cystectomy was performed with ureterosigmoidostomy (Mainz pouch II). Histological examination showed a primary signet-ring cell carcinoma of the bladder (pT3bN0M0). Following surgery, the patient received adjuvant chemotherapy with cisplatin and fluorouracil. CONCLUSIONS: Primary signet-ring cell carcinoma of the urinary bladder is an extremely rare tumor, accounting for approximately 0.24% of all bladder malignances. Patients with this type of cancer generally have a poor prognosis. However, our patient is free of disease 5 years after radical cystectomy.
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