P Kumar, K Natarajan, K Sasidharan
moiety disease, primary obstructive megaureter
P Kumar, K Natarajan, K Sasidharan. Primary obstructive mega ureter- lower moiety. The Internet Journal of Urology. 2009 Volume 7 Number 1.
Primary obstructive megaureter (POM) in a single system is a common entity. Lower moiety of a duplex system is usually associated with reflux. Here in we present a case of primary obstructive megaureter (POM) in a lower moiety of a duplex system.
A 12 year old male presented with history of dull aching pain in right loin of 4 year duration. General examination was unremarkable. Blood and urine examination were normal. Sonography revealed right kidney showing gross hydroureteronephrosis. IVU showed bilateral duplicated system, right upper moiety was normal and draining well, right lower moiety showed delayed excretion with hydroureteronephrosis (
Ureteric duplication is not uncommon; occurs in 0.8% of patients 1,4. Bilateral duplicated system is relatively rare entity. Hydronephrosis of the lower moiety is not infrequent and generally associated with reflux. Obstruction occurs commonly in upper moiety. Obstruction in lower moiety is not very uncommon, usually due to PUJ obstruction 2,4, 5 calculi, epithelial tumour, and ectopic upper pole ureterocele compressing the lower moiety orifice. Lower moiety obstruction due to primary obstructive megaureter is an uncommon entity3