Age / Sex : 70 / F

Chief complaint : right posterior back, palpable, non-tender mass


What is your diagnosis?

Two weeks later, you can see the final diagonosis with a brief discussion of this case (Please submit only one answer)

Courtesy : 이지숙 (Jisook Yi), 인제대학교 해운대 백병원 (Inje University Haeundae Paik Hospital)

Scaphothoracic bursitis

Discussion

Findings
1. Fluid collection between serratus anterior muscle and chest wall
2. Plain radiographs are helpful as a screening modality to find osseous lesions that can potentially cause bursitis or snapping, such as osteochondromas
3. MRI provides better visualization of underlying soft tissues, including inflamed bursae or masses

References
1. Clinical management of scapulothoracic bursitis and the snapping scapula. Sports Health. 2010 Mar;2(2): 147-55
2. Scapulothoracic pathology: review of anatomy, pathophysiology, imaging findings, and an approach to management. Skeletal Radiol. 2018 Feb;47(2):161-171