Weekly Case

Title : Case 855

Age / Sex : 22 / M

Chief complaint : palpable mass in the left thigh

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 :  이슬기 (Seul Ki Lee), 성빈센트병원 (St. Vincent’s Hospital)


synovial sarcoma


Coronal T2-weighted, fat-suppressed image shows about 3.5 × 3.9 × 5.2 cm sized multilobulated mass with heterogenous signal intensity of Lt vastus lateralis, focally involving biceps femoris muscle. The mass shows presence of T2 hyperintense areas with interfascial (or intercompartmental) extensions.
Axial T1-weighted images show multilobulated, iso-signal-intensity mass with extension to subcutaneous fat layer through iliotibial band
Axial T1-weighted, post-contrast image shows well-enhancing mass with intercompartmental extensions.
Axial DWl (b = 800) and ADC map show high signal intensity and low ADC value, suggesting diffusion restriction.

Murphey, M.D.; Gibson, M.S.; Jennings, B.T.; Crespo-Rodríguez, A.M.; Fanburg-Smith, J.; Gajewski, D.A. From the archives of the AFIP: Imaging of synovial sarcoma with radiologic-pathologic correlation. Radiographics 2006, 26, 1543–1565. 

Correct Answer
Total applicants 28 Correct answers 8
Name Institution
이규정 고려대학교 안암병원, 전문의
김승관 전문의
이승훈 한양대학교병원, 전문의
윤유성 경북대학교병원, 전문의
전차웅 가톨릭대학교 여의도성모병원, 전공의
박호영 전문의
홍성호 서울대학교병원, 전공의
김지환 전문의