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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
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