This Article Figures Only Full Text Full Text (PDF) Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Diederich, S Articles by Lüthen, R Search for Related Content PubMed PubMed Citation Articles by Diederich, S Articles by Lüthen, R

Solitary pulmonary nodule with growth and contrast enhancement at CT: inflammatory pseudotumour as an unusual benign cause

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

Small (10 mm) pulmonary nodules are frequently detected at modern chest CT. As most of these nodules are benign, non-invasive classification is required – usually based on assessment of growth and perfusion. Absence of growth and no evidence of perfusion, as demonstrated by lack of enhancement at contrast-enhanced CT or MRI, strongly suggest a benign nodule. On the other hand, growth with a doubling of the nodule's volume between 20 days and 400 days or enhancement suggest a malignant nature of the lesion. We present an example of a nodule with strong contrast enhancement and a doubling time of approximately 260 days, which histologically represented a benign inflammatory pseudotumour.