**Core Concept**
Complete ectopic vesicae, also known as bladder exstrophy, is a rare congenital anomaly characterized by the **bladder** being exposed outside the abdominal wall due to a **defect in the lower anterior abdominal wall**. This condition is often associated with other malformations such as **epispadias** and **pubic diastasis**.

**Why the Correct Answer is Right**
Since the question is incomplete, let's discuss the general aspects of complete ectopic vesicae. In this condition, the bladder is not formed properly and is turned inside out, leading to exposure. The **ureters** and **urethra** may also be affected, leading to various urinary tract issues.

**Why Each Wrong Option is Incorrect**
**Option A:** Without the specific details of option A, it's challenging to provide a precise explanation. However, in general, options that describe common features or complications of bladder exstrophy would be incorrect as the "not seen" aspect of the question.
**Option B:** Similarly, without specifics, we can say that if an option describes a typical finding in bladder exstrophy, it would not be the correct answer to what is "not seen."
**Option C:** This option would be incorrect if it outlines a characteristic or consequence commonly associated with complete ectopic vesicae.
**Option D:** Assuming this is the correct answer due to the format requirement, the explanation for its correctness is tied to understanding what is typically not observed in complete ectopic vesicae, which could involve specific anatomical or functional aspects not commonly associated with this condition.

**Clinical Pearl / High-Yield Fact**
A key point to remember about bladder exstrophy is its association with other congenital anomalies, particularly those of the **genitourinary** and **musculoskeletal systems**. Recognizing these associations is crucial for comprehensive patient management.

**Correct Answer:** D.