Table of Contents
What is the upper moiety?
The upper renal moiety has ectopic insertion medial and inferior to the lower pole moiety ureter and frequently ends in a ureterocele. The lower renal moiety has orthotopic insertion lateral and superior to the ureter draining the upper pole and reflux typically occurs.
What is kidney moiety?
Duplex kidneys have an upper pole and a lower pole, called moieties, each drained by a ureter. Approximately one-third of the duplex kidney is drained by the upper pole ureter, with two-thirds drained by the lower pole ureter. 1.
What is duplex moiety?
Duplex kidney formation is a result of early divisions of the ureter to reach the metanephros during embryogenesis. The two parts of the duplex kidney are usually joined at a slight twist. Typically there is a smaller upper moiety with only two major calyces and a larger lower moiety with three major calyces.
What is the ICD-10-CM code for hydronephrosis?
ICD-10-CM Code for Hydronephrosis with renal and ureteral calculous obstruction N13. 2.
What is lower moiety?
Because of the high incidence of lower pole reflux in complete duplications, decreased, delayed, or absent function in a hydronephrotic lower pole moiety is usually initially attributed to reflux nephropathy. Obstruction occurs commonly in the upper pole moiety due to an ectopic ureteral orifice or ureterocele.
Can a duplex kidney cause hydronephrosis?
Although duplex kidney is a relatively common congenital abnormality, severe hydronephrosis resulting from obstruction of a duplex ureter is relatively rare. Therefore, it may be a pitfall in clinical practice.
What is meaning of duplex kidney?
Children with a duplex kidney (also called a duplicated collecting system) have two ureters coming from a single kidney. These two ureters can drain independently into the bladder or connect and drain as a single ureter into the bladder. Duplex kidneys can occur in one or both kidneys.
What is hydronephrosis of the kidney?
Hydronephrosis is a condition where one or both kidneys become stretched and swollen as the result of a build-up of urine inside them. It can affect people of any age and is sometimes spotted in unborn babies during routine pregnancy ultrasound scans.
What is unspecified hydronephrosis?
Other and unspecified hydronephrosis Abnormal enlargement or swelling of a kidney due to dilation of the kidney calices and the kidney pelvis. It is often associated with obstruction of the ureter or chronic kidney diseases that prevents normal drainage of urine into the urinary bladder.
Are duplex kidneys larger?
An ultrasound identifies the size of the kidney (duplex kidneys are usually larger than normal), and may identify the two collecting systems or ureters.
Do you wee more with a duplex kidney?
Diagnosis and symptoms of duplex kidney Symptoms include: Urinary tract infections (UTIs). An obstruction of the urinary tract resulting in poor urine flow. Urinary incontinence is marked by frequent leaking of urine.
Can one kidney have two ureters?
Duplex kidney, also called duplicated ureters, is a problem with the urinary tract where there are two ureters draining urine from a single kidney. It’s more common in females than males and it’s an unpreventable birth defect.
What is hydronephrosis of the upper renal moiety?
The upper renal moiety shows moderate hydronephrosis and drained by a moderately dilated tortuous ureter that ends in an ectopic location within the infero-medial aspect of the urinary bladder near the bladder neck by a small about 12 X 12 X 10 mm intra-vesical ureterocele.
How do you diagnose hydronephrosis in primary care?
Your primary care doctor may refer you to a doctor who specializes in conditions affecting the urinary system (urologist) for your diagnosis. Tests for diagnosing hydronephrosis may include: A urine test to check for signs of infection or urinary stones that could cause a blockage
How is neonatal hydronephrosis assessed in the newborn?
Adherence to the SFU grading system is recommended for assessment of neonatal hydronephrosis. Postnatal causes of perinatal hydronephrosis should also be included in the differential diagnosis of hydronephrosis in the newborn. Footnotes
When is antenatal hydronephrosis indicated?
Antenatal hydronephrosis is indicated when the anteroposterior diameter of the renal pelvis is ≥4 mm in the second trimester or ≥7 mm in the third trimester [4].