J Korean Orthop Assoc.  2015 Feb;50(1):49-54. 10.4055/jkoa.2015.50.1.49.

Intramuscular Lipoma of the Supraspinatus Muscle with Supraspinatus Tendon Partial Tear

  • 1Department of Orthopedic Surgery, Daegu Fatima Hospital, Daegu, Korea. nso1020@naver.com


Infiltrating lipoma in supraspinatus muscle on the shoulder is very rare. We performed open excision and rotator cuff repair on a patient who had infiltrating lipoma in supraspinatus muscle with partial tear of the supraspinatus tendon. We achieved a satisfactory outcome on one-year follow-up magnetic resonance imaging. We report on the case with a review of the literature.


shoulder joint; supraspinatus; intramuscular lipoma; impingement syndrome; rotator cuff tear

MeSH Terms

Follow-Up Studies
Magnetic Resonance Imaging
Rotator Cuff
Shoulder Joint


  • Figure 1 Coronal section on T1 shows the lipoma (A), sagittal section on T1 shows the lipoma (B), coronal section on T2 fat suppression image shows the lipoma (C). (D) Coronal section on T2 fat suppression image shows the supraspinatus muscle tendon parial tear.

  • Figure 2 (A) Intraoperative photograph shows the lipoma. (B) Gross photograph shows the lipoma.

  • Figure 3 (A) Arthroscopic photography shows the lipoma. (B) Arthroscopic photography shows that the lipomas was removed from the supraspinatus muscle. (C) Arthroscopic photography shows the supraspinatus tendon tear. (D) Arthroscopic photography shows that a foot print of the supraspinatus. (E) A torn cuff was repaired by the transcuff method.

  • Figure 4 Histologic examination of a representative section of the mass shows a infiltrating lipoma characterized by mature adipocytes with muscle tissue (H&E, ×40).

  • Figure 5 (A) Follow-up magnetic resonance imaging (MRI) (postoperative one-year later) coronal section shows that remaining lipoma tissue (arrow). (B) Follow-up MRI (postoperative one-year later), sagittal section shows that remaining lipoma tissue. (C) Follow-up MRI (postoperative one-year later) coronal section shows that rotator cuff was repaired.


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