Chest wall lump: lipoma or intramuscular myxoma?

  • Alec Raniwsky
  • Michael Schmidt
  • Joseph J. EidEmail author
  • Michael W. Lee
Case Report


Intramuscular myxomas (IM) of the chest wall are extremely rare. We present the case of a 58-year-old African–American female who was initially diagnosed with having a chest wall lipoma. After re-evaluation, the lesion was consistent with an intercostal myxoma versus myxoid sarcoma. Preoperative imaging could not exclude malignancy. Given the diagnostic uncertainty, she underwent primary wide local resection and placement of polypropylene mesh for chest wall reconstruction. Histopathological examination revealed an intramuscular myxoma without sarcomatous changes arising from the 8th intercostal muscle bundle.


Myxoma Chest wall tumor Intramuscular myxoma Myxoid sarcoma 



Juanita Evans, MD, Department of Pathology, Ascension Providence Hospital, Southfield, Michigan.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no competing interest.


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Copyright information

© The Japanese Association for Thoracic Surgery 2019

Authors and Affiliations

  1. 1.School of MedicineAmerican University of the CaribbeanCoral GablesUSA
  2. 2.Department of Surgery, Ascension Providence-Providence Park HospitalMichigan State University College of Human MedicineSouthfieldUSA
  3. 3.Division of Cardiothoracic Surgery, Department of Surgery, Ascension Providence-Providence Park HospitalMichigan State University College of Human MedicineSouthfieldUSA

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