**Core Concept**
Tuberous sclerosis complex (TSC) is a rare genetic disorder characterized by the growth of non-cancerous tumors in various parts of the body, including the skin, brain, kidneys, and other organs. The condition is caused by mutations in either the TSC1 or TSC2 gene, leading to the activation of the mechanistic target of rapamycin (mTOR) pathway.

**Why the Correct Answer is Right**
Tuberous sclerosis is characterized by the development of various types of tumors, including subependymal giant cell astrocytomas (SEGAs) in the brain, renal angiomyolipomas, and skin lesions such as angiofibromas and hypomelanotic macules. These tumors are a hallmark of the condition and are often used for diagnosis.

**Why Each Wrong Option is Incorrect**
* **Option A:** Not a characteristic of tuberous sclerosis - Angiomyolipomas are actually a characteristic feature of tuberous sclerosis, making this option incorrect.
* **Option B:** Not a characteristic of tuberous sclerosis - Renal cell carcinoma is not typically associated with tuberous sclerosis, and its presence would suggest a different diagnosis.
* **Option C:** Not a characteristic of tuberous sclerosis - Not provided in the options, skipping to the next one.
* **Option D:** Not a characteristic of tuberous sclerosis - Not provided in the options, skipping to the next one.

**Clinical Pearl / High-Yield Fact**
Tuberous sclerosis complex is often associated with a range of learning disabilities and behavioral problems, including autism spectrum disorder. It's essential to consider this condition in patients with unexplained neurological symptoms or developmental delays.

**Correct Answer:** B.