The hypertransradiant hemithorax: The importance of lateral decentring, and the explanation for its appearance due to rotation

Joseph, A.E.A.; Lacey, G. J. de; Bryant, T. H. E.; Stoker, Dennis; Ayr, G.

doi:10.1016/s0009-9260(78)80213-x

Cited by 8 publications

(6 citation statements)

References 2 publications

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“…At chest radiography, the affected hemithorax often appears hyperlucent, an appearance that mimics that of radical mastectomy in adults (40,41). At CT, ipsilateral partial or complete absence of chest wall musculature is seen ( Fig 25) (39).…”

Section: Chest Wall Conditions Poland Syndromementioning

confidence: 98%

“…Thoracic spine scoliosis is a rare cause of unilateral hyperlucent hemithorax (41). Hyperlucency in the setting of scoliosis likely is at least partially due to substantial axial rotation of the spinal curvature, which leads to asymmetric absorption of the x-ray beam by the chest wall.…”

Section: Scoliosismentioning

confidence: 99%

Section: Technical Causesmentioning

confidence: 99%

“…Patient rotation is the most common cause of unilateral hyperlucent hemithorax, which is seen in as many as 1% of chest radiographs, and it may mimic unilateral air trapping (35,41). The area of hyperlucency is always on the side toward which the patient rotates (independent of AP or PA technique) and results from asymmetric absorption of the x-ray beam by the chest wall ( Fig 26) (41). Evaluation of the appearance of the ribs, clavicles, spinous processes, sternal ossification centers, and sternal wires (when present) on frontal chest radiographs may help determine the extent of patient rotation (35).…”

Section: Technical Causesmentioning

confidence: 99%

“…Evaluation of the appearance of the ribs, clavicles, spinous processes, sternal ossification centers, and sternal wires (when present) on frontal chest radiographs may help determine the extent of patient rotation (35). Lateral decentering (positioning the x-ray tube lateral to the patient's midline) also may cause a unilateral hyperlucent hemithorax to be seen (41).…”

Section: Technical Causesmentioning

confidence: 99%

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Expanding upon the Unilateral Hyperlucent Hemithorax in Children

Dillman¹,

Sanchez²,

Ladino-Torres³

et al. 2011

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Unilateral hyperlucent hemithorax is a common pediatric chest radiographic finding that may also be seen at computed tomography. It may result from congenital or acquired conditions involving the pulmonary parenchyma, airway, pulmonary vasculature, pleural space, and chest wall, as well as from technical factors such as patient rotation. Unilateral hyperlucent hemithorax has a broad differential diagnosis that includes unilateral emphysematous or bullous disease, pneumatocele, foreign body aspiration, Swyer-James syndrome, congenital lobar emphysema, endobronchial mass, unilateral pulmonary agenesis, proximal interruption of the pulmonary artery, scimitar syndrome, diaphragmatic hernia, and Poland syndrome. Although certain causes of unilateral hyperlucent hemithorax are clinically significant and potentially life threatening, others are of minimal or no clinical significance. When evaluating a patient with this finding, it is important to establish whether the apparent unilateral hyperlucent hemithorax is truly too lucent (hypoattenuating) or if the contralateral hemithorax is too opaque (hyperattenuating). It is imperative that radiologists be aware of the various causes of unilateral hyperlucent hemithorax so that they may diagnose the underlying condition and appropriately guide patient management.

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Section: Chest Wall Conditions Poland Syndromementioning

confidence: 98%

Section: Scoliosismentioning

confidence: 99%