J Korean Soc Radiol.  2010 Dec;63(6):555-559.

Carcinosarcoma of the Ureter and Urinary Bladder: A Case Report

• Cha YK
• Kim SH
• Kang MJ
• Kim JY
• Kim SH
• Cho HS
• Jeong MJ

Abstract

Carcinosarcoma is biphasic neoplasm with distinct carcinomatous and sarcomatous components. Carcinosarcoma arising from the urinary system is extremely rare and only 14 such cases of the ureteral carcinosarcoma have been reported in the medical literature. We experienced a case of surgically proven carcinosarcoma of the ureter and urinary bladder and we report here on the computed tomography findings of this rare neoplasm.

MeSH Terms

Carcinosarcoma
Tomography, X-Ray Computed
Ureter
Urinary Bladder

Figure

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  Fig. 1 A 83-year-old man with gross hematuria. A, B. The contrast-enhanced coronal reformatted CT scans show a heterogeneously enhancing intraluminal mass in the right distal ureter and that is protruding into the lumen of the urinary bladder. The attenuation value of the mass was measured as 42 Hounsfield units (HU) during the corticomedullary phase (A) and 66 HU during the nephrographic phase (B). C-F. The axial MDCT scans show different attenuation values of the ureteral mass (arrow) during different phases. The attenuation value of the lesion was measured as 21 HU during the nonenhanced phase (C), 42 HU during the corticomedullary phase (D), 66 HU during the nephrographic phase (E) and 71 HU during the pyelographic phase.

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  Fig. 2 Pathologic findings of the right ureteral and urinary bladder mass. A. Photograph of the resected ureter shows a grayish yellow mass protruding into the lumen of the distal ureter. B. Photomicrograph of the histological specimen shows a nest of squamous cell carcinoma (arrow) in sarcomatous stroma (H & E, ×10).

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  Fig. 3 Two months after the surgery, the CT scan shows a large heterogeneous mass in the right side of the pelvic cavity.

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