대한근골격영상의학회

Title : Case 806

Age / Sex : 66 / M Chief complaint : palpable mass on Lt proximal thigh (5-6months ago) 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) Diagnosis: (Epithelioid) Hemangioendothelioma Discussion Findings 1.A 4x4.5x5.1cm sized well-defined soft tissue mass between sartorius, adductor longus, vastus medialis muscle (intermuscular area) 2.Mass contains T2WI hyper SI, T1WI iso to slightly hyper SI solid portion around superficial femoral vessel with heterogeneous enhancement with encasing superficial femoral vessels 3.correlation with plain radiograph, it has calcifications 4.The mass shows mild diffusion restriction (ADC map: mean value 1378) Differential diagnosis Angiosarcoma Extraskeletal osteosarcoma References AJR Am J Roentgenol.2020 Nov;215(5):1290-1298.doi: 10.2214/AJR.20.22876. Epub 2020 Aug 25. A Review of the Spectrum of Imaging Manifestations of Epithelioid Hemangioendothelioma

Title : Case 806

Age / Sex : 66 / M

Chief complaint : palpable mass on Lt proximal thigh (5-6months ago)

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)

Diagnosis:

(Epithelioid) Hemangioendothelioma

Discussion

Findings

1.A 4x4.5x5.1cm sized well-defined soft tissue mass between sartorius, adductor longus, vastus medialis muscle (intermuscular area)

2.Mass contains T2WI hyper SI, T1WI iso to slightly hyper SI solid portion around superficial femoral vessel with heterogeneous enhancement with encasing superficial femoral vessels

3.correlation with plain radiograph, it has calcifications

4.The mass shows mild diffusion restriction (ADC map: mean value 1378)

Differential diagnosis
Angiosarcoma
Extraskeletal osteosarcoma

References
AJR Am J Roentgenol.2020 Nov;215(5):1290-1298.doi: 10.2214/AJR.20.22876. Epub 2020 Aug 25. A Review of the Spectrum of Imaging Manifestations of Epithelioid Hemangioendothelioma

Correct Answer
Total applicants	33	Correct answers	0
Name		Institution
Semi-Correct Answer
Total applicants	33	Semi-Correct answers	5
이규정		국군수도병원, 전문의
김민지		전문의
박재은		전공의
박소연		일산백병원, 전공의
김지환		전공의