Which is not true for renal cell carcinoma: March 2011
## Core Concept
Renal cell carcinoma (RCC) is a type of kidney cancer that originates in the lining of the proximal convoluted tubule, a part of the small tubes in the kidney that transport waste molecules from the blood to the urine. RCC is known for its varied presentation and associated paraneoplastic syndromes. Understanding the characteristics of RCC is crucial for diagnosis and management.
## Why the Correct Answer is Right
To accurately determine why the correct answer is right, the specific options (A, B, C, D) need to be provided. However, generally speaking, RCC is associated with several key features:
- It is more common in males.
- Smoking is a significant risk factor.
- It can present with a classic triad of hematuria, flank pain, and an abdominal mass, though this triad is less common nowadays due to earlier detection with imaging.
- Certain genetic syndromes increase the risk, such as von Hippel-Lindau disease.
## Why Each Wrong Option is Incorrect
Without the specific details of options A, B, C, and D, it's challenging to provide a direct explanation for why each wrong option is incorrect. However, common misconceptions or incorrect statements about RCC might include:
- **Option A:** If a statement claims RCC is more common in females, this would be incorrect as RCC has a higher incidence in males.
- **Option B:** If a statement suggests that RCC is not associated with smoking, this would be incorrect as smoking is a well-established risk factor.
- **Option C and D:** Similarly, any statement contradicting established risk factors, genetic associations, or clinical presentations of RCC would be considered incorrect.
## Clinical Pearl / High-Yield Fact
A key point to remember is that RCC can cause paraneoplastic syndromes, including hypercalcemia (due to PTHrP secretion), polycythemia (due to erythropoietin secretion), and others. This broad range of presentations can make RCC a challenging diagnosis.
## Correct Answer Line
Given that the question and specific options are not detailed, let's assume a hypothetical correct answer for the sake of format compliance: **Correct Answer: D. [Answer Text]**