case_images: PMC4075794_01
case_images: In A, chest X-ray showing bilateral hilar lymphadenopathy and slight
  effusion on the right. In B, CT scan of the chest showing multiple swollen
  lymph nodes and subpleural nodules.
case_images: 1806-3713-jbpneu-39-01-00108-gf01.jpg
case_images: PMC4075794_01_1806-3713-jbpneu-39-01-00108-gf01.jpg
case_images: f01
case_images: In addition, there was an abnormal shadow with multiple swollen lymph nodes on chest X-ray and CT scans (Figure 1).
case_images: In A, bone marrow aspirate showing metastasis of small cell lung cancer
  (H&E; magnification, x400). In B, tumor cells testing positive for
  anti-cytokeratin (AE1/AE3; immunohistochemical staining; magnification, x400).
  In C, tumor cells testing positive for thyroid transcription factor-1 (TTF-1;
  immunohistochemical staining; magnification, x400). In D, tumor cells testing
  positive for synaptophysin (immunohistochemical staining; magnification,
  x400).
case_images: 1806-3713-jbpneu-39-01-00108-gf02.jpg
case_images: PMC4075794_01_1806-3713-jbpneu-39-01-00108-gf02.jpg
case_images: f02
case_images: Bone marrow aspiration revealed bone marrow metastasis of SCLC (Figure 2).