An Uncommon Lung Neoplasm in a Young Patient: Diagnostic Challenges.

BACKGROUND Adenosquamous carcinoma of the lung (ASC) is a rare subtype of non-small-cell lung carcinoma (NSCLC), histologically defined by the presence of both squamous cell carcinoma and adenocarcinoma components. This aggressive malignancy has been rarely described in young female patients. Due to its low incidence and difficult-to-establish preoperative diagnosis, little is known about the complete clinical course for young patients with this specific NSCLC subtype.