대한근골격영상의학회

Title : Case 783

Age / Sex : 51 / F Chief complaint : Left knee pain 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 : 최자영(Ja-Young Choi), 서울대학교병원(Seoul National University Hospital) Diagnosis: Desmoplastic fibroblastoma (=Collagenous fibroma) with calcification Discussion Findings 1.Intratumoral calcifications with random distribution in the prefemoral fat pad 2.Dark-signal sub-synovial soft tissue mass in the prefemoral fat pad on T1WI & T2WI. 3.Dark-signal with some blooming on GRE sequence 4.Inhomogeneous contrast enhancement on postcontrast images. Differential diagnosis Tenosynovial giant cell tumor, localized type References 1.Desmoplastic Fibroblastoma: An Uncommon Tumor With a Relatively Characteristic MRI Appearance. AJR 2020;215: 178-183 2.Calcified desmoplastic fibroblastoma of the foot: imaging findings. Skeletal Radiol 2017 Apr;46(4):565-569

Title : Case 783

Age / Sex : 51 / F

Chief complaint : Left knee pain

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 : 최자영(Ja-Young Choi), 서울대학교병원(Seoul National University Hospital)

Diagnosis:

Desmoplastic fibroblastoma (=Collagenous fibroma) with calcification

Discussion

Findings

1.Intratumoral calcifications with random distribution in the prefemoral fat pad

2.Dark-signal sub-synovial soft tissue mass in the prefemoral fat pad on T1WI & T2WI.

3.Dark-signal with some blooming on GRE sequence

4.Inhomogeneous contrast enhancement on postcontrast images.

Differential diagnosis

Tenosynovial giant cell tumor, localized type

References

1.Desmoplastic Fibroblastoma: An Uncommon Tumor With a Relatively Characteristic MRI Appearance. AJR 2020;215: 178-183

2.Calcified desmoplastic fibroblastoma of the foot: imaging findings. Skeletal Radiol 2017 Apr;46(4):565-569

Correct Answer
Total applicants	38	Correct answers	1
Name		Institution
이준영		공보의, 전문의
Semi-Correct Answer
Total applicants	38	Semi-Correct answers	11
이규정		국군수도병원, 전문의
최형인		전문의
박소연		일산백병원, 전공의
이진영		전문의
김민혜		전공의
도윤아		전공의
권은영		전문의
김지현		전문의
박혜주		순천향대학교 부천병원, 전공의
조황희		군의관, 전문의
권기언		전문의