Difference between revisions of "Lung bleb"

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'''Lung blebs''', also '''pulmonary belbs''', are benign cystic [[lung]] lesions.<ref>{{Cite journal  | last1 = Ryu | first1 = JH. | last2 = Swensen | first2 = SJ. | title = Cystic and cavitary lung diseases: focal and diffuse. | journal = Mayo Clin Proc | volume = 78 | issue = 6 | pages = 744-52 | month = Jun | year = 2003 | doi = 10.4065/78.6.744 | PMID = 12934786 }}</ref>
'''Lung blebs''', also '''pulmonary blebs''', are benign cystic [[lung]] lesions.<ref>{{Cite journal  | last1 = Ryu | first1 = JH. | last2 = Swensen | first2 = SJ. | title = Cystic and cavitary lung diseases: focal and diffuse. | journal = Mayo Clin Proc | volume = 78 | issue = 6 | pages = 744-52 | month = Jun | year = 2003 | doi = 10.4065/78.6.744 | PMID = 12934786 }}</ref>


==General==
==General==
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BLEBS, APEX OF THE LEFT LUNG, WEDGE RESECTION:
BLEBS, APEX OF THE LEFT LUNG, WEDGE RESECTION:
- BENIGN LUNG BLEBS.
- BENIGN LUNG BLEBS.
- EVIDENCE OF PULMONARY HEMORRHAGE.
- ABUNDANT PIGMENTED AIRSPACE MACROPHAGES.
- NEGATIVE FOR MALIGNANCY.
- NEGATIVE FOR MALIGNANCY.
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===Micro===
===Micro===
The sections show peripheral lung with large dilated air spaces, surrounded by thin walls
The sections show peripheral lung with large dilated air spaces, surrounded by thin walls
and lined by respiratory-type epithelium.  Siderophages are focally increased. Focal
and lined by respiratory-type epithelium.  Pigmented airspace macrophages are increased
fibrous pleural thickening is present.  No significant inflammation is present.  No
(smoker's macrophages). Focal fibrous pleural thickening is present.  No significant
interstitial fibrosis is present.
inflammation is present.  No interstitial fibrosis is present.


==References==
==References==

Revision as of 21:57, 5 March 2014

Lung blebs, also pulmonary blebs, are benign cystic lung lesions.[1]

General

Clinical history:

Gross

Cystic lesions:[2]

  • Bleb <=1 cm.
  • Bulla >1 cm, wall-thickness <= 1 mm.

Microscopic

Features:

  • Thin-wall cystic lesions.
    • Blebs are entirely intrapleural.[3]

DDx:

Sign out

BLEBS, APEX OF THE LEFT LUNG, WEDGE RESECTION:
- BENIGN LUNG BLEBS.
- ABUNDANT PIGMENTED AIRSPACE MACROPHAGES.
- NEGATIVE FOR MALIGNANCY.

Micro

The sections show peripheral lung with large dilated air spaces, surrounded by thin walls and lined by respiratory-type epithelium. Pigmented airspace macrophages are increased (smoker's macrophages). Focal fibrous pleural thickening is present. No significant inflammation is present. No interstitial fibrosis is present.

References

  1. Ryu, JH.; Swensen, SJ. (Jun 2003). "Cystic and cavitary lung diseases: focal and diffuse.". Mayo Clin Proc 78 (6): 744-52. doi:10.4065/78.6.744. PMID 12934786.
  2. Hansell, DM.; Bankier, AA.; MacMahon, H.; McLoud, TC.; Müller, NL.; Remy, J. (Mar 2008). "Fleischner Society: glossary of terms for thoracic imaging.". Radiology 246 (3): 697-722. doi:10.1148/radiol.2462070712. PMID 18195376.
  3. Leslie, Kevin O.; Wick, Mark R. (2004). Practical Pulmonary Pathology: A Diagnostic Approach (1st ed.). Churchill Livingstone. pp. 787. ISBN 978-0443066313.