Chassaignac bursa
Chassaignac bursa (also known as the retromammary bursa, submammary serous bursa or occasionally Chassaignac bag) is the space behind the breast, lying between the pectoralis fascia posteriorly and deep layer of superficial fascia anteriorly.
It contains loose connective tissue and aids in mobility of the breast on the thoracic wall. Posteriorly it is bound by the pectoral fascia and anteriorly by the deep layer of the superficial fascia.
Radiographic appearance
Mammography
Chassaignac bursa is a lucency in the mammogram and its radiological significance lies in the fact that it must be seen in all optimally performed craniocaudal and mediolateral oblique mammograms.
Related Radiopaedia articles
Anatomy: Thoracic
- thoracic skeleton
- thoracic cage
- thoracic spine
- articulations
- muscles of the thorax
- diaphragm
- intercostal space
- intercostal muscles
- variant anatomy
- spaces of the thorax
- thoracic viscera
- tracheobronchial tree
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lungs
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bronchopulmonary segmental anatomy (Boyden Classification) (mnemonic)
- left lung
- right lung
- variant anatomy
- lung parenchyma
- hilum
- pleura
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bronchopulmonary segmental anatomy (Boyden Classification) (mnemonic)
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heart
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- pectinate muscles
- cardiac fibrous skeleton
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coronary arteries
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- myocardial segments
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left main coronary artery (LMCA)
- ramus intermedius artery (RI)
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circumflex artery (LCx)
- obtuse marginal branches (OM1, OM2, etc))
- Kugel's artery
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left anterior descending artery (LAD)
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right coronary artery (RCA)
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- congenital anomalies
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- fetal circulation
- atrial septum
- endocardium
- myocardium
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pericardium
- epicardium
- epicardial fat pad
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- transverse pericardial sinus
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pericardial recesses
- aortic recesses
- pulmonic recesses
- postcaval recess
- pulmonary venous recesses
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- thymus
- breast
- blood supply of the thorax
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- inferior vena cava (IVC)
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coronary veins
- cardiac veins which drain into the coronary sinus
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- vein of Marshall (oblique vein of the left atrium)
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