Congenital primary megaureter, obstructed form is a rare condition in which the ureter (the tube that carries urine from the kidney to the bladder) is abnormally enlarged and obstructed. This can cause urine to back up in the kidney, leading to kidney damage and other complications. Treatment typically involves surgery to correct the obstruction and restore normal urine flow.

The symptoms of Congenital primary megaureter, obstructed form may include:

-Pain in the lower abdomen or flank
-Frequent, painful urination
-Urinary tract infections
-Blood in the urine
-Enlarged abdomen
-Vomiting
-Fever
-Lethargy
-Failure to thrive in infants

The exact cause of congenital primary megaureter, obstructed form is unknown. However, it is believed to be caused by a combination of genetic and environmental factors. Possible causes include:

1. Abnormal development of the ureter during fetal development.

2. Abnormalities in the muscles of the bladder or ureter.

3. Abnormalities in the nerves that control the bladder or ureter.

4. Abnormalities in the blood vessels that supply the bladder or ureter.

5. Infections during pregnancy.

6. Exposure to certain medications or toxins during pregnancy.

7. Abnormalities in the structure of the urinary tract.

1. Open Ureteral Reimplantation: This is a surgical procedure that involves re-implanting the ureter into the bladder. This procedure is usually done in cases where the ureter is blocked or narrowed.

2. Endoscopic Ureteral Reimplantation: This is a minimally invasive procedure that involves using a small camera to guide the surgeon in re-implanting the ureter into the bladder.

3. Ureteral Stent Placement: This is a procedure that involves placing a small tube (stent) into the ureter to help keep it open and allow urine to flow more freely.

4. Ureteral Dilatation: This is a procedure that involves using a balloon to widen the ureter and allow urine to flow more freely

1. Family history of congenital urologic anomalies
2. Maternal diabetes
3. Maternal use of certain medications during pregnancy
4. Maternal exposure to certain environmental toxins
5. Maternal infection during pregnancy
6. Low birth weight
7. Premature birth
8. Abnormalities of the urinary tract or kidneys

There is no cure for congenital primary megaureter, obstructed form. Treatment typically involves medications to reduce the pressure in the ureter and bladder, as well as surgery to correct the obstruction. Medications may include alpha-blockers, anticholinergics, and diuretics. Surgery may involve ureteral reimplantation, ureteral stenting, or ureteral dilation.