A couple presents with infeility. On investigation, the husband is found to have azoospermia on semen analysis. Vas was not palpable on per rectal examination. Semen had low volume, high viscosity and fructose was present. What will you do next?
**Core Concept**
The underlying issue here involves **male infertility** due to **azoospermia**, which is the absence of sperm in the semen. This condition can result from various factors, including obstructive or non-obstructive causes. The absence of the **vas deferens** on palpation during a rectal exam suggests a potential obstructive cause.
**Why the Correct Answer is Right**
Given the absence of the **vas deferens** and the presence of **fructose** in the semen, which is produced by the **seminal vesicles**, the next step would involve investigating for **congenital bilateral absence of the vas deferens (CBAVD)** or other obstructive conditions. The low volume and high viscosity of the semen also point towards an issue with the seminal vesicles or the ejaculatory ducts.
**Why Each Wrong Option is Incorrect**
**Option A:** This choice is not provided, but typically, any option suggesting immediate surgical intervention without further diagnosis would be incorrect.
**Option B:** Similarly, this option is not given, but choosing a treatment path without confirming the diagnosis would be premature.
**Option C:** Again, without the specific option, we can infer that any choice not aimed at diagnosing the cause of azoospermia and the absent vas would be incorrect.
**Option D:** This option is also not specified, but generally, any approach that doesn't consider the potential for CBAVD or doesn't plan for genetic counseling, given the potential association with **cystic fibrosis**, would be inappropriate.
**Clinical Pearl / High-Yield Fact**
It's crucial to remember that **CBAVD** is often associated with **cystic fibrosis** mutations, making genetic counseling an essential part of the management plan. The presence of fructose in the semen helps to differentiate between obstructive and non-obstructive azoospermia, as fructose is produced by the seminal vesicles and its presence indicates that these structures are functional.
**Correct Answer:** D. Further investigation for CBAVD and genetic counseling.