**Core Concept**
Adenoidectomy is a surgical procedure to remove the adenoids, often performed in children to treat recurrent infections, sleep disorders, or other conditions. However, certain contraindications must be considered to ensure patient safety.

**Why the Correct Answer is Right**
A bleeding disorder is a significant contraindication for adenoidectomy due to the risk of uncontrolled bleeding. Patients with bleeding disorders, such as hemophilia or von Willebrand disease, have impaired coagulation pathways, making them more susceptible to excessive bleeding during and after surgery. The surgical site in adenoidectomy is rich in blood vessels, and bleeding can be difficult to control in patients with bleeding disorders.

**Why Each Wrong Option is Incorrect**
**Option A:** SOM (Suppurative Otitis Media) is a condition where the middle ear becomes infected, but it is not a contraindication for adenoidectomy. In fact, adenoidectomy may be indicated in some cases of SOM to reduce the risk of recurrent infections.
**Option B:** CSOM (Chronic Suppurative Otitis Media) is a chronic infection of the middle ear, but it is not a contraindication for adenoidectomy. Adenoidectomy may be considered in some cases of CSOM to reduce the risk of recurrent infections.
**Option D:** None is incorrect because bleeding disorder is a valid contraindication for adenoidectomy.

**Clinical Pearl / High-Yield Fact**
When performing adenoidectomy, it's essential to assess the patient's coagulation status and consider the risk of bleeding, especially in patients with bleeding disorders. This can be achieved by reviewing the patient's medical history, performing laboratory tests, and consulting with a hematologist if necessary.

**✓ Correct Answer: C. Bleeding disorder**