A 40-year-old nonsmoking woman comes to the physician complaining of a persistent cough and loss of weight and appetite over the past 3 months. On radiography, a well-demarcated subpleural mass is found on the right lung. Which of the following types of carcinoma does this patient most likely have? (A) Adenocarcinoma of the lung (B) Carcinoid of the lung (C) Metastases to lung from a distant primary tumor (D) Small-cell carcinoma of the lung (E) Squamous cell carcinoma of the lung



A adenocarcinoma of lung

E squamous cell carcinoma

A. Adenocarcinoma lung. Clues: NON smoker and SUBPLEURAL mass (peripheral). The advantage of peripheral tumor is that it is easier to surgically remove than other central tumors. It's not carcinoid since, bronchi are not involved It's unlikely to be mets because of one single focus Small cell is a central lesion, with brain mets with smoking history SCC is also a central lesion, with smoking history

Ans is A. In women, nonsmoking and peripheral location (subpleural)- most likely it is Adenocarcinoma


Adenocarcinoma for sure

adenocarcinoma of the lung

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