Which of the following is NOT a presentation of imperforate anus?

The presentation of imperforate anus is characterized by various observable signs and symptoms that indicate problems with the development of the anus and rectum. When we consider the correct answer, it highlights that the rectum having normal function contradicts the primary issue associated with imperforate anus.

In cases of imperforate anus, the absence of a proper rectal opening is a clear indication that normal bowel function cannot occur, making it impossible for the rectum to function as expected. Therefore, the rectum cannot secrete normal bowel movements, as it is either obstructed or malformed, which results in an inability to pass stool. Any presentation that suggests the rectum is functioning normally would not align with the definition of imperforate anus since the condition inherently prevents normal waste elimination.

This understanding helps to clarify that the other options correctly reflect typical presentations of imperforate anus, such as the absence of the rectal opening, potentially liquid secretions due to obstruction, and various structural anomalies like narrowing of the anus. Hence, recognizing that the rectum is functioning normally is inconsistent with the condition leads to the conclusion that this is the correct answer.