Pyonephrosis CT: Difference between revisions
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It is difficult to distinguish hydronephrosis from pyonephrosis on a CT scan. | It is difficult to distinguish hydronephrosis from pyonephrosis on a CT scan. | ||
The indirect signs of pyonephrosis on CT scan include<ref name="pmid18587250">{{cite journal| author=Stojadinović M, Mićić S, Milovanović D| title=Ultrasonographic and computed tomography findings in renal suppurations: performance indicators and risks for diagnostic failure. | journal=Urol Int | year= 2008 | volume= 80 | issue= 4 | pages= 389-97 | pmid=18587250 | doi=10.1159/000132697 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=18587250 }} </ref>: | * The indirect signs of pyonephrosis on CT scan include<ref name="pmid18587250">{{cite journal| author=Stojadinović M, Mićić S, Milovanović D| title=Ultrasonographic and computed tomography findings in renal suppurations: performance indicators and risks for diagnostic failure. | journal=Urol Int | year= 2008 | volume= 80 | issue= 4 | pages= 389-97 | pmid=18587250 | doi=10.1159/000132697 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=18587250 }} </ref>: | ||
* Enlarged kidneys | |||
Enlarged kidneys | * Presence of an infected collecting system in the setting of hydronephrosis. | ||
* Perinephric fat stranding | |||
Presence of an infected collecting system in the setting of hydronephrosis. | * Striated nephrogram<ref name="pmid32792123">{{cite journal| author=Zulfiqar M, Ubilla CV, Nicola R, Menias CO| title=Imaging of Renal Infections and Inflammatory Disease. | journal=Radiol Clin North Am | year= 2020 | volume= 58 | issue= 5 | pages= 909-923 | pmid=32792123 | doi=10.1016/j.rcl.2020.05.004 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=32792123 }} </ref> | ||
* Pelvic wall thickening | |||
Perinephric fat stranding | * Fluid-fluid levels and gas within the collecting system can sometimes be seen | ||
* Other conditions like neoplasms, nephrolithiasis, congenital anomalies causing obstruction. | |||
Striated nephrogram<ref name="pmid32792123">{{cite journal| author=Zulfiqar M, Ubilla CV, Nicola R, Menias CO| title=Imaging of Renal Infections and Inflammatory Disease. | journal=Radiol Clin North Am | year= 2020 | volume= 58 | issue= 5 | pages= 909-923 | pmid=32792123 | doi=10.1016/j.rcl.2020.05.004 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=32792123 }} </ref> | * A few studies have shown Hounsfield Unit (HU) levels were higher in patients with pyonephrosis as compared to hydronephrosis which can help distinguish the two conditions. HU was found to be even higher in patients with sepsis. | ||
Pelvic wall thickening | |||
Fluid-fluid levels and gas within the collecting system can sometimes be seen | |||
Other conditions like neoplasms | |||
==References== | ==References== | ||
Revision as of 16:46, 16 October 2021
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Harsh Vardhan Chawla, M.B.B.S.[2]
CT scan
CT scan provides anatomic details and helps in distinguishing intrarenal and extrarenal pathologies.
It is difficult to distinguish hydronephrosis from pyonephrosis on a CT scan.
- The indirect signs of pyonephrosis on CT scan include[1]:
- Enlarged kidneys
- Presence of an infected collecting system in the setting of hydronephrosis.
- Perinephric fat stranding
- Striated nephrogram[2]
- Pelvic wall thickening
- Fluid-fluid levels and gas within the collecting system can sometimes be seen
- Other conditions like neoplasms, nephrolithiasis, congenital anomalies causing obstruction.
- A few studies have shown Hounsfield Unit (HU) levels were higher in patients with pyonephrosis as compared to hydronephrosis which can help distinguish the two conditions. HU was found to be even higher in patients with sepsis.
References
- ↑ Stojadinović M, Mićić S, Milovanović D (2008). "Ultrasonographic and computed tomography findings in renal suppurations: performance indicators and risks for diagnostic failure". Urol Int. 80 (4): 389–97. doi:10.1159/000132697. PMID 18587250.
- ↑ Zulfiqar M, Ubilla CV, Nicola R, Menias CO (2020). "Imaging of Renal Infections and Inflammatory Disease". Radiol Clin North Am. 58 (5): 909–923. doi:10.1016/j.rcl.2020.05.004. PMID 32792123 Check
|pmid=value (help).