DescriptionCT of a lung nodule with a notch sign.png
English: Original caption: 78-year-old man with a previous history of achilles tendon rupture and slight postoperative dyspnoea. Chest radiograph (not shown) showed a nodule in the left lung. Axial CT scan in lung window setting shows a 28 mm large, well-delineated nodule in the lingula with prominent indentation of the contour (notch). Histopathologic examination after lobectomy showed a large cell neuroendocrine carcinoma.
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(2017). "Evaluation of the solitary pulmonary nodule: size matters, but do not ignore the power of morphology". Insights into Imaging9 (1): 73–86. DOI:10.1007/s13244-017-0581-2. ISSN1869-4101.
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