User:Sangnil/Weigert-Meyer rule

Weigert-Meyer rule

Also known as: Weigert-Meyer law

Associated persons: Robert Meyer Carl Weigert

Description: Applies to duplex collecting systems, when complete, duplicated ureters insert separately into the bladder. The Weigert-Meyer rule states that. the upper pole ureter is the ectopic ureter and its orifice inserts inferomedially in the bladder in relationship to the lower pole normal ureter.

Or: When duplicated ureters insert separately into the bladder, the laterocranial ostium corresponds to the caudal renal pelvis and the medio caudal ostium the cranial renal pelvis.

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