All of the following sire true regarding mesothelioma except:
**Core Concept**
Mesothelioma is a rare and aggressive form of cancer that primarily affects the pleura, peritoneum, or pericardium. It is strongly associated with exposure to asbestos fibers, which can lead to chronic inflammation and genetic mutations in mesothelial cells.
**Why the Correct Answer is Right**
Mesothelioma arises from the mesothelial cells lining the pleural or peritoneal cavities. The correct answer will be a statement that is false regarding mesothelioma. The disease is characterized by uncontrolled cell growth, invasion into surrounding tissues, and metastasis to distant sites. The pathogenesis of mesothelioma involves the accumulation of genetic mutations, particularly in the TP53 and CDKN2A genes, leading to loss of cell cycle regulation and apoptosis.
**Why Each Wrong Option is Incorrect**
**Option A:** Mesothelioma is most commonly associated with asbestos exposure. This statement is true.
**Option B:** Mesothelioma arises from the epithelial cells lining the pleural or peritoneal cavities. This statement is true.
**Option C:** The median survival of patients with malignant pleural mesothelioma is less than 12 months. This statement is true.
**Clinical Pearl / High-Yield Fact**
A key clinical feature of mesothelioma is its association with pleural effusions, which can be massive and recurrent. Malignant pleural mesothelioma often presents with non-specific symptoms such as chest pain, dyspnea, and weight loss.
**Correct Answer: D.**