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CT Findings of Surgically Resected Pleomorphic Carcinoma of the Lung in 30 Patients

Tae Sung Kim1, Joungho Han2, Kyung Soo Lee1, Yeon Joo Jeong1, Seo Hyun Kwak1, Hong Sik Byun1, Myung Jin Chung1, Hojoong Kim3 and O Jung Kwon3

1 Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 135-710, Korea.
2 Department of Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Ilwon-dong, Gangnam-gu, Seoul 135-710, Korea.
3 Division of Pulmonary and Critical Care Medicine, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 135-710, Korea.



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  		Fig. 1A —Pleomorphic carcinoma of lung (adenocarcinoma and spindle cell subtype) in 46-year-old man (case 4 in Table 1). Axial contrast-enhanced CT scan shows peripheral mass in right upper lobe.

 


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  		Fig. 1B —Pleomorphic carcinoma of lung (adenocarcinoma and spindle cell subtype) in 46-year-old man (case 4 in Table 1). CT image obtained using lung window settings shows marginal spiculation of tumor.

 


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  		Fig. 1C —Pleomorphic carcinoma of lung (adenocarcinoma and spindle cell subtype) in 46-year-old man (case 4 in Table 1). Photomicrograph shows mixed composition of adenocarcinoma (arrows) and spindle cell carcinoma (asterisk). (H and E, x100)

 


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  		Fig. 2A —Pleomorphic carcinoma of lung (squamous cell and spindle cell subtype) in 58-year-old man (case 10 in Table 1). Axial contrast-enhanced CT scan shows central cavitary mass with marginal irregularity in right lower lobe superior segment. Note enlarged hilar lymph node (arrow).

 


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  		Fig. 2B —Pleomorphic carcinoma of lung (squamous cell and spindle cell subtype) in 58-year-old man (case 10 in Table 1). Photomicrograph shows mixed composition of squamous cell carcinoma (arrows) and spindle cell carcinoma (asterisk). (H and E, x100)

 


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  		Fig. 3A —Pleomorphic carcinoma of lung (large cell and giant cell subtype) in 63-year-old man (case 30 in Table 1). Axial contrast-enhanced CT scan shows peripheral low-attenuation mass with marginal irregularity in left upper lobe. Note small intratumoral cavities and adjacent chest wall invasion (arrow).

 


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  		Fig. 3B —Pleomorphic carcinoma of lung (large cell and giant cell subtype) in 63-year-old man (case 30 in Table 1). CT image obtained using lung window settings shows peritumoral areas of ground-glass attenuation.

 


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  		Fig. 3C —Pleomorphic carcinoma of lung (large cell and giant cell subtype) in 63-year-old man (case 30 in Table 1). Photograph of gross specimen shows large round peripheral necrotic mass.

 


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  		Fig. 3D —Pleomorphic carcinoma of lung (large cell and giant cell subtype) in 63-year-old man (case 30 in Table 1). Photomicrograph of histopathologic specimen shows solid tumor (T) with poorly defined margin and central necrosis. Surrounding lung parenchyma (H) shows intraalveolar macrophage aggregation and interstitial thickening due to inflammatory cell infiltration. (H and E, x12)

 


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  		Fig. 3E —Pleomorphic carcinoma of lung (large cell and giant cell subtype) in 63-year-old man (case 30 in Table 1). Photomicrograph shows mixed composition of large cell carcinoma and pleomorphic multinucleated giant cells (arrows). (H and E, x200)

 

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