Hydronephrosis grading (SFU system)
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One of the gradingGrading systems of hydronephrosis is as followshave been devised to communicate the degree of upper collecting system dilatation. The most common system used (Society of Foetal Ultrasound, SFU) was originally designed for grading neonatal and infant hydronephrosis:
-
grade 0
- no dilatation, calyceal walls are apposed to each other
-
grade 1 (mild)
- dilatation of the renal pelvis without dilatation of the calyces (can also occur in the
extra-renalextrarenal pelvis) - no parenchymal atrophy
- dilatation of the renal pelvis without dilatation of the calyces (can also occur in the
-
grade 2 (mild)
- dilatation of the renal pelvis (mild) and calyces (pelvicalyceal pattern is retained)
- no parenchymal atrophy
-
grade 3 (moderate)
- moderate
dilataitondilatation of the renal pelvis and calyces - blunting of
fornciesfornicies and flattening of papillae - mild cortical thinning may be seen
- moderate
-
grade 4 (severe
/gross)- gross dilatation of the renal pelvis and calyces, which appear ballooned
- loss of borders between the renal pelvis and calyces
- renal atrophy seen as cortical thinning
See also
Hydronephrosis-grading systems (including the SFU) are controversial in terms of their intra-rater and inter-rater reliability.
-<p>One of the<strong> grading systems of hydronephrosis </strong>is as follows:</p><ul>- +<p><strong>Grading systems of hydronephrosis </strong>have been devised to communicate the degree of upper collecting system dilatation. The most common system used (Society of Foetal Ultrasound, SFU) was originally designed for grading neonatal and infant <a href="/articles/hydronephrosis">hydronephrosis</a>:</p><ul>
-<li>dilatation of the <a href="/articles/renal-pelvis">renal pelvis</a> without dilatation of the calyces (can also occur in the extra-renal pelvis)</li>- +<li>dilatation of the <a href="/articles/renal-pelvis">renal pelvis</a> without dilatation of the calyces (can also occur in the extrarenal pelvis)</li>
-<li>moderate dilataiton of the renal pelvis and calyces</li>-<li>blunting of forncies and flattening of papillae</li>- +<li>moderate dilatation of the renal pelvis and calyces</li>
- +<li>blunting of fornicies and flattening of papillae</li>
-<strong>grade 4</strong> (severe/gross)<ul>- +<strong>grade 4</strong> (severe)<ul>
-</ul><h4>See also</h4><ul>-<li><a href="/articles/hydronephrosis">hydronephrosis</a></li>-<li><a title="Vesicoureteric reflux (VUR)" href="/articles/vesicoureteric-reflux">vesicoureteric reflux</a></li>-</ul>- +</ul><p>Hydronephrosis-grading systems (including the SFU) are controversial in terms of their intra-rater and inter-rater reliability.</p>
References changed:
- 2. Keays MA, Guerra LA, Mihill J et-al. Reliability assessment of Society for Fetal Urology ultrasound grading system for hydronephrosis. J. Urol. 2008;180 (4): 1680-2. <a href="http://dx.doi.org/10.1016/j.juro.2008.03.107">doi:10.1016/j.juro.2008.03.107</a> - <a href="http://www.ncbi.nlm.nih.gov/pubmed/18708207">Pubmed citation</a><span class="auto"></span>
- 3. Konda R, Sakai K, Ota S et-al. Ultrasound grade of hydronephrosis and severity of renal cortical damage on 99m technetium dimercaptosuccinic acid renal scan in infants with unilateral hydronephrosis during followup and after pyeloplasty. J. Urol. 2002;167 (5): 2159-63. <a href="http://www.ncbi.nlm.nih.gov/pubmed/11956470">Pubmed citation</a><span class="auto"></span>
- 1. Fernbach SK, Maizels M, Conway JJ. Ultrasound grading of hydronephrosis: introduction to the system used by the Society for Fetal Urology. Pediatr Radiol. 1994;23 (6): 478-80. <a href="http://www.ncbi.nlm.nih.gov/pubmed/8255658">Pubmed citation</a><span class="auto"></span>
- 1. http://www.hamiltonhealthsciences.ca/documents/Patient%20Education/Hydronephrosis-lw.pdf
- 2. http://www.urology-textbook.com/hydronephrosis.html
- 3. Konda R, Sakai K, Ota S et-al. Ultrasound grade of hydronephrosis and severity of renal cortical damage on 99m technetium dimercaptosuccinic acid renal scan in infants with unilateral hydronephrosis during followup and after pyeloplasty. J. Urol. 2002;167 (5): 2159-63. <a href="http://www.ncbi.nlm.nih.gov/pubmed/11956470">Pubmed citation</a><span class="auto"></span>
Systems changed:
- Paediatrics
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