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Year : 2016  |  Volume : 33  |  Issue : 1  |  Page : 119  

Unilateral hyperlucent lung

Paediatrics Interventional Pulmonologist, Division of Paediatrics Pulmonology, Namazee Hospital, Shiraz University of Medical Sciences, Shiraz, Iran

Date of Web Publication4-Jan-2016

Correspondence Address:
Mohammad Ashkan Moslehi
Paediatrics Interventional Pulmonologist, Division of Paediatrics Pulmonology, Namazee Hospital, Shiraz University of Medical Sciences, Shiraz
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0970-2113.173075

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How to cite this article:
Moslehi MA. Unilateral hyperlucent lung. Lung India 2016;33:119

How to cite this URL:
Moslehi MA. Unilateral hyperlucent lung. Lung India [serial online] 2016 [cited 2020 Sep 23];33:119. Available from: http://www.lungindia.com/text.asp?2016/33/1/119/173075


I read with great interest the review article by Singh et al.[1] about unilateral hyperlucent lung and their interesting, unusual causes.

As they mentioned, this appearance can be a result from a wide variety of technical or diseases, so I decide to write a quick, simple approach based on its etiology for this entity.

In case of any finding regarding of unilateral hyperlucency on chest X-ray first categorized it as positional or pathological causes. Thus if:

  • Positional (rotational): Turn toward film (or away of the beam) makes that hemithorax hypertranslucent. For example when the patient is turned to the left, the left side will be hypertranslucent
  • Pathological or (nonrotational): When rotation isn't thought to be the cause.

In these types there are two helpful mnemonics:

    S: Swyer-James syndrome
    A: Agenesis (pulmonary)
    F: Fibrosis
    E: Effusion (pleural effusion on the contralateral side)
    P: Pneumonectomy/pneumothorax
    O: Obstruction
    E: Pulmonary embolus
    M: Mucous plugging.
    C: Contralateral pleural effusion
    R: Rotation
    A: Air, e.g., pneumothorax
    W: Wall, e.g., chest wall mass, polio, mastectomy, and Poland syndrome
    L: Lungs airway or vascular obstruction, foreign body aspiration, Swyer–James syndrome, accidental bronchial endotracheal tube intubation, congenital lobar overinflation, bullae, obliterative bronchiolitis, bronchial atresia, large pulmonary embolus (Westermark sign), congenital pulmonary artery hypoplasia, pulmonary artery stenosis, Blalock Taussig shunt
    S: Scoliosis.[2]

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Conflicts of interest

There are no conflicts of interest.

   References Top

Singh U, Kumar S, Mittal V. Unilateral hyperlucent lung: An unusual cause. Lung India 2015;32:539-40.  Back to cited text no. 1
  Medknow Journal  
Saxena AK, Mittal V, Sodhi KS. Differential diagnosis of unilateral hyperlucent lung in children. AJR Am J Roentgenol 2013;200:W95.  Back to cited text no. 2


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