Histopatholoty of a lung cancer shows ‘clara cells’ probable diagnosis is –
**Core Concept**
The question is testing the student's knowledge of the histopathological features of lung cancer and their correlation with specific cell types. Clara cells are a type of non-ciliated airway epithelial cell that are often involved in the pathogenesis of lung cancer.
**Why the Correct Answer is Right**
Clara cells are a characteristic feature of adenocarcinoma, a type of non-small cell lung cancer (NSCLC). These cells are derived from the bronchiolar epithelium and are often involved in the formation of adenocarcinomas, particularly those with a lepidic growth pattern. The presence of Clara cells in a lung cancer specimen can help differentiate adenocarcinoma from other types of lung cancer, such as squamous cell carcinoma or small cell carcinoma.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not specify a type of lung cancer that is associated with Clara cells.
**Option B:** This option is incorrect because it is a type of lung cancer that is not typically associated with Clara cells.
**Option C:** This option is incorrect because it is a type of lung cancer that is not typically associated with Clara cells.
**Clinical Pearl / High-Yield Fact**
It's worth noting that the presence of Clara cells in a lung cancer specimen can be a useful diagnostic clue, particularly in cases where the histopathological features are not typical of a specific type of lung cancer. Additionally, the identification of Clara cells can help guide further diagnostic testing, such as molecular analysis or imaging studies.
**Correct Answer: A. Adenocarcinoma.**