PMC8600148_01
Positron emission tomography-computed tomography scan showing increased fludeoxyglucose uptake within the mass located posteriorly in the right upper lobe.
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Positron emission tomography-computed tomography scanning suggested localised malignancy (Fig. 1), and core-needle aspiration biopsy from the lung tumour revealed a malignant tumour of unknown type.
Part of the biphasic high-grade tumour with a cytokeratin positive epithelial component and a blastematous component that was positive for CD56 (also known as neural cell adhesion molecule).
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The patient underwent right upper lobectomy with complete resection and clear margins, revealing classic biphasic pulmonary blastoma (Fig. 2) and confirming the classification (pTNM CT2aN0M0).