USMLE Forum Archives - USMLE Step 3 - CXR review q3
CXR review q3
zkadhem - 05-21-09 12:37
Q.3. A 61-year-old man is diagnosed with lung cancer after a chest x-ray reveals an
alveolar infiltrate. This pattern is most consistent with which of the following
pulmonary malignancies?
A. Small cell carcinoma
B. Adenocarcinoma
C. Bronchoalveolar cell carcinoma
D. Sarcoma
E. Mesothelioma
zkadhem - 05-21-09 12:37
Q.3. A 61-year-old man is diagnosed with lung cancer after a chest x-ray reveals an
alveolar infiltrate. This pattern is most consistent with which of the following
pulmonary malignancies?
A. Small cell carcinoma
B. Adenocarcinoma
C. Bronchoalveolar cell carcinoma
D. Sarcoma
E. Mesothelioma
The correct answer and explanation will be available after you answer.
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#22
Re: CXR review q3 babbu5508 - 07-28-10 05:16 My answer is: a.
It is thought to originate from neuroendocrine cells (APUD cells) in the bronchus called Feyrter cells (named for Friedrich Feyrter). Hence, they express a variety of neuroendocrine markers, and may lead to ectopic production of hormones like ADH and ACTH that may result in paraneoplastic syndromes.
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