Abstract
Primary pediatric lung tumors are uncommon and have many overlapping clinical and imaging features. In contrast to adult lung tumors, these rare pediatric neoplasms have a relatively broad histologic spectrum. Informed by a single-institution 13-year retrospective record review, we present an overview of the most common primary pediatric lung neoplasms, with a focus on the role of positron emission tomography (PET), specifically 18F-fluorodeoxyglucose (FDG) PET and 68Ga-DOTATATE PET, in the management of primary pediatric lung tumors. In addition to characteristic conventional radiographic and cross-sectional imaging findings, knowledge of patient age, underlying cancer predisposition syndromes, and PET imaging features may help narrow the differential. While metastases from other primary malignancies remain the most commonly encountered pediatric lung malignancy, the examples presented in this pictorial essay highlight many of the important conventional radiologic and PET imaging features of primary pediatric lung malignancies.
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Data availability
The imaging datasets generated, analyzed, and presented during the current study are available from the corresponding author upon request.
Change history
13 February 2024
A Correction to this paper has been published: https://doi.org/10.1007/s00247-024-05867-y
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SDV conceived, supervised, and supported the study.
KKS and SDV contributed to data collection and manuscript preparation.
CBW and SDV confirmed correlative radiologic, clinical, and pathologic data.
All authors reviewed and approved the final manuscript.
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The original online version of this article was revised: The originally published article contains errors.
1. All instances of “68Ga” should have no space.
2. Figures 4d, 5a, 9d and 10c has been updated (alignment of the sub-figures)
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247_2023_5847_MOESM1_ESM.tif
Supplementary file1 (TIF 11355 KB) Online Resource 1. Type 1 Pleuropulmonary Blastoma in a 2 month old boy. AP chest radiograph (A) shows multiple thin-walled coalescent lung cysts, thought to be congenital pulmonary airway malformation based on prenatal imaging. Axial CT (B) of the chest confirms large thin-walled cysts with septations. Based on the predominantly cystic appearance with no solid elements detected, PET imaging was not performed. Following surgical resection pathology confirmed type 1 pleuropulmonary blastoma.
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Supplementary file2 (TIF 13464 KB) Online Resource 2. Type 2 pleuropulmonary blastoma in a newborn with prenatally diagnosed lung cyst. Newborn girl with prenatally diagnosed lung cyst showing progressive enlargement of multi-loculated lung cysts on CXR obtained at 1 month of age (A) and 3 months of age (B), with a possible solid nodule seen at 3 months (B, arrow). Coronal CT images reconstructed in soft tissue (C) and lung windows (D) demonstrate the multi-loculated lung cysts with thin septations and confirm the presence of a solid mass (arrow) associated with the predominantly cystic lung lesion. Based on the progressive enlargement of the mass the patient underwent surgical resection and a staging PET/CT was not performed. Pathology confirmed a mixed cystic and solid type 2 pleuropulmonary blastoma.
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Supplementary file3 (TIF 11956 KB) Online Resource 3. Endobronchial Carcinoid. 16 year-old girl with persistent cough and left lower lobe opacity on PA chest radiograph (A, arrow) that failed to clear with appropriate anti-microbial treatment. Coronal contrast-enhanced CT (B) revealed an enhancing endobronchial lesion in the left lower lobe (asterisk) with a larger extra-bronchial component (arrow) that included heterogeneously enhancing tumor and post-obstructive collapsed lung, corresponding to the left lower lobe opacity seen radiographically. Based on the CT appearance no additional imaging was performed and the patient underwent left lower lobectomy. Pathology revealed low-grade carcinoid.
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Supplementary file4 (TIF 15190 KB) Online Resource 4. 18F-FDG PET/CT imaging of Mucoepidermoid Carcinoma. Frontal chest radiograph (A) from a 15-year-old girl with fever, cough and hemoptysis shows a well-defined nodular opacity in the right perihilar region (solid arrow). Corresponding axial CT image (B) demonstrates a well-defined intraparenchymal lesion in posterior segment of right upper lobe, in close association with the upper lobe bronchus (open arrow). Coronal MIP image from 18F-FDG PET/CT (C) shows moderate uptake in the right upper lobe lesion (solid arrow), with no FDG-avid disease elsewhere. Pathology revealed well-differentiated mucoepidermoid carcinoma arising from a right upper lobe bronchus. (Reproduced with permission from Lee et al. [48])
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Supplementary file5 (TIF 14198 KB) Online Resource 5. 18F-FDG PET/CT staging of NUT Carcinoma. 9 year old girl presenting with joint pain and abdominal pain. Radiographs of the right knee (A, arrows) show periosteal reaction with an infiltrative bone lesion; bone marrow biopsy showed NUT carcinoma. Staging axial and coronal contrast enhanced chest CT (B, C) and coronal MIP image from whole body 18F-FDG PET/CT (D) demonstrate mediastinal and left hilar (B, arrows) soft tissue mass with extension into the left lower lobe (C, open arrow). 18F-FDG PET imaging shows widespread metastatic disease throughout the axial and appendicular skeleton (dashed arrows) in addition to uptake at the sites of mediastinal and lung involvement seen by CT.
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Shashi, K.K., Weldon, C.B. & Voss, S.D. Positron emission tomography in the diagnosis and management of primary pediatric lung tumors. Pediatr Radiol 54, 671–683 (2024). https://doi.org/10.1007/s00247-023-05847-8
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DOI: https://doi.org/10.1007/s00247-023-05847-8