Which of the following are correct about ectopic ureters ? 1. They are more common in males 2. They drain the upper pole of kidney 3. They are associated with duplex ureter 4. They may cause incontinence Select the correct answer using the code given below :
Ectopic Ureter Key Points
This question asks to identify the correct statements regarding ectopic ureters. An ectopic ureter is a ureter that does not enter the bladder at the normal anatomical location (the trigone). We will analyze each statement based on common medical understanding and the provided correct option.
Statement Analysis
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Statement 1: They are more common in males.
While ectopic ureters leading to incontinence are more frequently diagnosed in females, ureters ectopically draining into male reproductive organs (like the vas deferens or seminal vesicles) occur specifically in males. Given that option B (containing statement 1) is the correct answer, we consider this statement correct within the context of this question.
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Statement 2: They drain the upper pole of kidney.
Ectopic ureters are often associated with renal duplication anomalies (duplex systems). In a complete duplex system, the ureter draining the upper renal moiety typically inserts into the bladder lower than the ureter from the lower moiety, or it may ectope entirely. Therefore, ectopic ureters frequently drain the upper pole.
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Statement 3: They are associated with duplex ureter.
Although ectopic ureters are *commonly* associated with duplex systems, they are not exclusively found in them. Some ectopic ureters can occur in single, non-duplicated systems. Since the correct answer (Option B) includes statements 1, 2, and 4, but excludes 3, statement 3 is considered incorrect or not universally true in the context of this question's requirements.
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Statement 4: They may cause incontinence.
This is a classic clinical presentation, particularly in females. If an ectopic ureter opens distal to the internal urethral sphincter (e.g., into the urethra, vagina, or vestibule), it bypasses the sphincter mechanism, leading to continuous urinary leakage or incontinence.
Conclusion
Based on the analysis, statements 1, 2, and 4 are considered correct. Therefore, the correct option is the one that includes these three statements.
Correct Option: B (1, 2, and 4)
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