Duhamel’s operation is done for:
**Core Concept**
Duhamel's operation is a surgical procedure used to treat anorectal malformations, specifically rectourinary fistulas, and rectovaginal fistulas. It involves the mobilization of the rectum and the creation of a new anus, allowing for proper bowel function.
**Why the Correct Answer is Right**
Duhamel's operation is performed to correct anorectal malformations, which are congenital anomalies of the rectum and anus. The procedure involves the separation of the rectum from the urinary tract or vagina, followed by the creation of a new anus. This allows for the proper connection of the rectum to the anus, enabling normal bowel function and preventing complications such as incontinence and infection.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because Duhamel's operation is not typically performed for rectal cancer. While rectal cancer may require surgical intervention, the specific technique of Duhamel's operation is not used for this condition.
**Option B:** This option is incorrect because Hirschsprung's disease is a condition characterized by the absence of ganglion cells in the distal colon, leading to functional obstruction. While surgical intervention is often required, Duhamel's operation is not the standard procedure for Hirschsprung's disease.
**Option C:** This option is incorrect because imperforate anus is a type of anorectal malformation, but Duhamel's operation is not the only procedure used to treat this condition.
**Clinical Pearl / High-Yield Fact**
Duhamel's operation is a classic example of a staged procedure, where the initial stage involves the separation of the rectum from the urinary tract or vagina, followed by a second stage where the new anus is created. This staged approach allows for the optimal correction of anorectal malformations and minimizes the risk of complications.
**Correct Answer:** C.