Figure 2.

(A) The supraspinatus muscle protrudes at the musculotendinous junction (SSP), and subacromial impingement has developed. (B) The suprascapular nerve (arrowhead) is released by cutting the superior transverse scapular ligament (arrow) before tumor resection. (C) The tumor is identified after widening the anterior margin of the supraspinatus muscle. (D) The tumor is removed through the Neviaser portal. (E) Gross view of the resected tumor. (F) Histological examination reveals that the tumor originated from the mature lipoma cells and slight fibrous connective tissue, with no malignancy (hematoxylin and eosin stain; ×40 magnification).