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British Journal of Radiology (2006) 79, 76-78
© 2006 British Institute of Radiology
doi: 10.1259/bjr/97645635
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Solitary pulmonary nodule with growth and contrast enhancement at CT: inflammatory pseudotumour as an unusual benign cause

S Diederich, Prof. Dr. med.1, D Theegarten, Priv. Doz. Dr. med.2, G Stamatis, Prof. Dr. med.3 and R Lüthen, Priv. Doz. Dr. med.4

1 Department of Diagnostic and Interventional Radiology, Marien Hospital, Academic Teaching Hospital, Rochusstr. 2, D-40479 Düsseldorf, 2 Institute of Pathology, BG-Kliniken Bergmannsheil, Ruhr University Bochum, 3 Department of Thoracic Surgery and Endoscopy, Ruhrland Hospital Essen and 4 Department of Medicine, Marien Hospital Düsseldorf, Germany


Figure 1
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  		Figure 1. Dynamic thin-section CT scan before ((a) lung window, (b) mediastinal window) and 2 min after ((c) mediastinal window) contrast enhancement: The nodule shows an enhancement of 68 Hounsfield units.

 

Figure 2
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  		Figure 2. Follow-up thin-section CT scan after 10 months revealing growth of the nodule to 12 mm.

 

Figure 3
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  		Figure 3. Histological slide showing the nodule with focal sclerosis (Haematoxylin and eosin, magnification x 2).

 

Figure 4
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  		Figure 4. Histological slides demonstrating a mixed inflammatory infiltrate with lymphocytes and plasma cells ((a) Haematoxylin and eosin, magnification x 200) and involvement of medium-sized vessels with occlusion ((b) CD34 staining, ABC method, magnification x 100).

 




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