Small cell carcinoma (urinary bladder)

Small cell
carcinoma (urinary bladder) • Small cell carcinoma of the bladder - Ganzer Fall bei Radiopaedia
Morgan M, Small cell carcinoma of the bladder. Case study, Radiopaedia.org (Accessed on 08 Jan 2023) https://doi.org/10.53347/rID-41619 • CC by-nc-sa 3.0 (modified)
Surgical
resection of mediastinal metastasis from small cell carcinoma of bladder: case report. A Chest contrast-enhanced computed tomography image showing an enhanced heterogeneous mass, sized 4.5 cm, in the mediastinum. B FDG positron emission tomography revealed abnormal FDG uptake (SUVmax = 6.31) in the mass. Yellow triangles in A and B indicate the tumor
gtcscases.biomedcentral.com • CC-by-4.0
Contrast-enhanced
ultrasound of small cell carcinoma in urinary bladder: a case report and review of literature. US images of small cell carcinoma of the bladder. a. Abdominal sonography revealed a hypoechoic mass in the apex of the urinary bladder. b. CDFI showed a rich blood flow signal inside this mass. c. CEUS imaging showed the mass began to undergo enhancement (wash-in time) from its periphery to its center at 10 s. d. CEUS imaging showed persistent high peak enhancement of the mass at 40 s. e. CEUS showed the enhancement signal of the mass was equal to the bladder wall at 120 s. f. Time-intensity curve showed wash-in time of 10 s, TTP of 33 s, SI of 62.7% and wash-out time > 60 s
bmccancer.biomedcentral.com • CC-by-4.0
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Small cell carcinomas of the bladder are rare bladder cancers with a poor prognosis. Its appearance overlaps other bladder cancers, in particular, urothelial/transitional cell carcinoma.

Epidemiology

A very rare tumor, it has been estimated at <0.0001% of bladder cancers. It is thought to have a predominance in caucasian patients and those with a smoking history.

Clinical presentation

Hematuria and pain are the most common symptoms. Its presentation overlaps that of other bladder tumors, such as urothelial/transitional cell carcinoma; there is no specific presentation.

Radiographic features

The appearance is similar to urothelial/transitional cell carcinoma: an enhancing polypoid bladder mass. There are no imaging finding specific to the tumor.

Treatment and prognosis

Prognosis is poor, with <10% five year survival for disease confined to the pelvis .

Differential diagnosis

Siehe auch:
Assoziationen und Differentialdiagnosen zu kleinzelliges Blasenkarzinom:
kleinzelliges
Karzinom
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