대한근골격영상의학회

Title : Case 753

Age / Sex : 38 / M Chief complaint : Incidentally detected 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 : 강유선, Yusuhn Kang, 분당서울대병원, Seoul National University Bundang Hospital Diagnosis: Hibernoma Discussion Findings 1.PET shows mild hypermetabolism in the mass, and corresponding CT images show a subcutaneous mass with intermediate attenuation between fat and muscle attenuation. 2.T1wI and T2wI: The lesion is slightly hypointense to the surrounding subcutaneous fat. 3.FS-T2wI: Incomplete fat suppression is noted in the lesion compared to the surrounding subcutaneous fat 4.Gd-enhanced FS T1wI show linear enhancement within the mass, which histologically represents vessels within the tumor. Differential diagnosis angiolipoma atypical lipomatous tumor (WD liposarcoma) References 1. Papathanassiou, Z.G., Alberghini, M., Taieb, S. et al. Imaging of hibernomas: A retrospective study on twelve cases. Clin Sarcoma Res 2011;1:3 2. Lee JC, Gupta A, Saifuddin A, Flanagan A, Skinner JA, Briggs TW, Cannon SR. Hibernoma: MRI features in eight consecutive cases. Clin Radiol. 2006; 61:1029-34. 3. Ritchie DA, Aniq H, Davies AM, Mangham DC, Helliwell TR. Hibernoma--correlation of histopathology and magnetic-resonance-imaging features in 10 cases. Skeletal Radiol. 2006; 35:579-89. 4. Chatterton BE, Mensforth D, Coventry BJ, Cohen P, Hibernoma: intense uptake seen on Tc-99m tetrofosmin and FDG positron emission tomographic scanning. Clin Nucl Med 2002; 27:369–370

Title : Case 753

Age / Sex : 38 / M

Chief complaint : Incidentally detected 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 : 강유선, Yusuhn Kang, 분당서울대병원, Seoul National University Bundang Hospital

Diagnosis:

Hibernoma

Discussion

Findings

1.PET shows mild hypermetabolism in the mass, and corresponding CT images show a subcutaneous mass with intermediate attenuation between fat and muscle attenuation.

2.T1wI and T2wI: The lesion is slightly hypointense to the surrounding subcutaneous fat.

3.FS-T2wI: Incomplete fat suppression is noted in the lesion compared to the surrounding subcutaneous fat

4.Gd-enhanced FS T1wI show linear enhancement within the mass, which histologically represents vessels within the tumor.

Differential diagnosis

angiolipoma

atypical lipomatous tumor (WD liposarcoma)

References
1. Papathanassiou, Z.G., Alberghini, M., Taieb, S. et al. Imaging of hibernomas: A retrospective study on twelve cases. Clin Sarcoma Res 2011;1:3
2. Lee JC, Gupta A, Saifuddin A, Flanagan A, Skinner JA, Briggs TW, Cannon SR. Hibernoma: MRI features in eight consecutive cases. Clin Radiol. 2006; 61:1029-34.
3. Ritchie DA, Aniq H, Davies AM, Mangham DC, Helliwell TR. Hibernoma--correlation of histopathology and magnetic-resonance-imaging features in 10 cases. Skeletal Radiol. 2006; 35:579-89.
4. Chatterton BE, Mensforth D, Coventry BJ, Cohen P, Hibernoma: intense uptake seen on Tc-99m tetrofosmin and FDG positron emission tomographic scanning. Clin Nucl Med 2002; 27:369–370

Correct Answer
Total applicants	31	Correct answers	19
Name		Institution
김기욱		전문의
김경호		서울아산병원, 전문의
이규정		국군대전병원, 전문의
김아연		서울아산병원, 전문의
최형인		전문의
박영태		서울아산병원, 전문의
김종혁		서울아산병원, 전문의
조영민		전문의
한유비		전문의
박선영		한림대학교 성심병원, 전문의
김수호		삼성서울병원, 전공의
김신영		전공의
박진희		전문의
변승희		서울아산병원, 전문의
김성진		365병원, 전문의
김형민		전문의
백승진		분당차병원, 전공의
한영주		전공의
윤나연		전공의
Semi-Correct Answer
Total applicants	31	Semi-Correct answers	6
윤유성		순천향대 부천병원, 전문의
김동현		공중보건의, 전문의
손석우		강동 경희대학교병원, 전문의
강지희		전문의
장성원		전문의
황영욱		전문의