Review axillary anatomy as it appears onchest CT Illustratea range of axillary pathology that can be encountered on chest CT Describe imaging findings and clues that will help the radiologist establish a diagnosis or a limited differential diagnosis for an axillary abnormality.
The axilla is a pyramidal compartment bounded by the chest wall and muscles that make the anterior,
and lateral walls ( Fig. 1 ).
The axillary space contains the lymphatics,
accessory breast tissue,
and the axillary sheath that consists of the axillary artery and vein and the brachial plexus. Axillary massesand lymphadenopathy arecommon indications for cross-setional imaging.
Axillary abnormalities can also be incidental findings on chest CT performed for...
Findings and procedure details
Trauma Hematoma and Vascular Injuries Hematomas can develop from blunt or penetrating trauma or complicate surgery or other invasive procedures.
Vascular injuries range from intimal tears to transections or occlusions.
Displaced fracture fragments into the axilla or axillary hematoma should prompt careful examination of the axillary blood vessels. Key imaging findings: Collection with poorly-defined margins (hematoma) Usually high attenuation when acute but become more heterogeneous over time...
An accurate differential diagnosis of axillary pathologies can beestablished with knowledge of the axillary anatomy,
anatomic location of the lesion,
and clinical history.
routine use of full field-of-view on chest CT provides the radiologist with the opportunity to detect and characterize palpable and incidental axillary abnormalities.
Corresponding author Jeffrey P.
M.D. Professor and Chief of Thoracic Imaging Vice Chair of Quality and Safety Department of Radiology University of Wisconsin School of Medicine and Public Health Madison,
WI USA E-mail : firstname.lastname@example.org jkrads.net Twitter:@JeffreyKanneMD Co-authors Ruchi Sharma,
Ph.D. Radiology Resident Department of Radiology University of Wisconsin School of Medicine and Public Health Madison,
WI USA Joanna E.
M.D. Assistant Professor,
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