Abstract
Purpose
We sought to summarize the value of contrast-enhanced computed tomography (CECT) in the differential diagnosis of bladder paraganglioma (BPG) and bladder cancer.
Methods
The medical records of 19 patients with BPG (13 males, 6 females) and 56 patients with bladder cancer (49 males, 7 females) between November 2007 and June 2023 were retrospectively reviewed. All patients underwent unenhanced and contrast-enhanced CT scanning.
Results
Patient age (46.4 ± 11.1 years vs. 58.6 ± 16.0 years), tumor calcification (1/19 vs. 18/56), stalk (0/19 vs. 10/56), internal vessels (15/19 vs. 19/56) and the enlarged adjacent supplying artery (14/19 vs. 10/56) were significantly different between BPG and bladder cancer (P < 0.05). The CT value in the corticomedullary phase (92.4 ± 16.6 HU vs. 64.0 ± 14.5 HU) and the contrast-enhanced value in the corticomedullary phase (54.5 ± 17.4 HU vs. 28.5 ± 12.8 HU) were significantly greater in BPG patients than in bladder cancer patients (P < 0.001), with corresponding area under the curve values of 0.930 and 0.912, respectively. The optimal cutoff values were 83.2 HU and 38.5 HU, respectively. A CT value > 83.2 HU in the corticomedullary phase and a contrast-enhanced CT value > 38.5 HU in the corticomedullary phase were used to indicate BPG with sensitivities of 78.9% and 89.5%, respectively, and specificities of 94.6% and 75.0%, respectively.
Conclusion
The corticomedullary phase of CECT plays an important role in the preoperative differential diagnosis of BPG and bladder cancer.
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Abbreviations
- BPG:
-
Bladder paraganglioma
- CECT:
-
Contrast-enhanced computed tomography
- HU:
-
Hounsfield unit
- GE:
-
General electric
- MRI:
-
Magnetic resonance imaging
- H&E:
-
Hematoxylin and eosin
- SDHB:
-
Succinate dehydrogenase subunit B
- CD 56:
-
Cell adhesion molecule 56
- GATA-3:
-
GATA binding protein 3
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Jiu-ping Liang, Liang Yin and Yi-yong Liu designed/performed most of the investigation and data analysis and wrote the manuscript; Li-kun Gao provided pathological assistance; Lei Yin, Wang Ren, Zhi-fa Jin and Li-peng Chen contributed to interpretation of the data and analyses. All of the authors have read and approved the manuscript.
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Liang, Jp., Yin, L., Gao, Lk. et al. Contrast-enhanced CT in the differential diagnosis of bladder cancer and paraganglioma. Abdom Radiol 49, 1584–1592 (2024). https://doi.org/10.1007/s00261-024-04217-8
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DOI: https://doi.org/10.1007/s00261-024-04217-8