Pulmonary inflammatory myofibroblastic tumour misdiagnosed as a round pneumonia

Description

A 9-year-old male patient, previously healthy, presented with acute-onset chest pain. The pain was on the right lateral chest, 10/10 in severity and non-reproducible. The patient had 1-week history of cough that had been improving; no fever, weight loss, dyspnoea, palpitations or night sweats were reported. He had positive sick contacts. Examination was remarkable for slight decrease in breath sounds at the right lower lung field posteriorly. Initial chest radiograph showed a well-circumscribed opacity in the right lower lobe posteriorly with adjacent consolidation seen on the lateral view. The lesion appeared to be distinct from the cardiomediastinal silhouette (figure 1). Sonography was performed to characterise the nature of the lesion; however, it was difficult to visualise and only revealed mixed echotexture (figure 2). Contrast-enhanced CT scan of the thorax was then obtained. CT showed a right posterior basal segment consolidation with hypo-enhancing components...

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