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1. Plasma cell granuloma

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Figure 5-1

Plasma cell granuloma.

This 2-year-old child presented with a 4-month history of nonproductive cough and a persistent lung opacity on chest radiographs. A. There is an oval right lower-lobe mass (arrow) on chest radiography. The margins are well-defined and there is minimal adjacent pleural thickening. There are no air bronchograms. B. Sonography indicates a solid composition. The peripheral aspect (arrow) is hypoechoic relative to the center. Echogenic foci suggest calcification. C. There is moderate enhancement of the mass on contrast-enhanced CT. There margins of the mass are somewhat lobulated. Irregular calcification is present (arrow).

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2. Plasma cell granuloma

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Figure 5-2

Plasma cell granuloma.

A chest radiograph shows a large right lung mass (arrows) with lobulated borders and conglomerate central calcifications.

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3. Plasma cell granuloma

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Figure 5-3

Plasma cell granuloma.

Contrast-enhanced CT demonstrates a left upper-lobe mass (arrow). There is dense calcification in portions of the lesion. Moderate contrast enhancement occurs in the periphery of the mass.

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4. Pulmonary hamartoma

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Figure 5-4

Pulmonary hamartoma.

A. There is an oval, soft-tissue density mass (arrow) in the central aspect of the left lung. B. Calcifications are visible within the lesion (arrow) on CT.

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5. Respiratory papillomatosis

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Figure 5-5

Respiratory papillomatosis.

There are multiple air-filled cavitary lesions of the right upper lobe in this patient with a history of recurrent papillomas of the larynx and trachea.

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6. Bronchial carcinoid tumor

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Figure 5-6

Bronchial carcinoid tumor.

A. A posteroanterior chest radiograph of a boy with recurrent right lower-lobe pneumonias shows atelectasis in the right lower lobe. B. CT demonstrates dilated bronchi in the atelectatic lung. C. There is an endobronchial mass (arrow) in a segmental bronchus of the right lower lobe. D. A rounded fi lling defect (arrow) is visible on bronchography.

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7. Bronchial carcinoid tumor

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Figure 5-7

Bronchial carcinoid tumor.

A. A chest radiograph of a child with cough and wheezing shows volume loss in the left lung. B. CT demonstrates a small, round, endobronchial mass (arrow) in the left main bronchus.

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8. Hodgkin lymphoma

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