CTICasesIncidentally Detected Limited-Stage Small Cell Lung Carcinoma
Imaging findings
A preoperative chest radiograph demonstrates a new loss of the aortopulmonary window with an abnormal extra convexity, as well as fullness in the right paratracheal stripe. Subsequent CT and PET imaging confirm isolated mediastinal lymphadenopathy at multiple stations without a discrete parenchymal lung mass.
Key takeaways
Small cell lung carcinoma can occasionally present as isolated mediastinal or hilar lymphadenopathy without an identifiable primary parenchymal lung nodule. Recognizing subtle alterations in normal radiographic lines, such as the aortopulmonary window and paratracheal stripes, is crucial for early detection of limited-stage disease.
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