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Alveolar soft part sarcoma: MR and angiographic findings

 J.-S. Suh  ;  Jaemin Cho  ;  Sang Hoon Lee  ;  Kyoo-Ho Shin  ;  Woo Ick Yang  ;  Jeong Hoon Lee  ;  Jae-Hyun Cho  ;  Kyung Jin Suh  ;  Young Joon Lee  ;  Kyung Nam Ryu 
 Skeletal Radiology, Vol.29(12) : 680-689, 2000 
Journal Title
 Skeletal Radiology 
Issue Date
Adolescent ; Adult ; Angiography* ; Arm ; Bone Neoplasms/secondary ; Diagnosis, Differential ; Female ; Humans ; Leg ; Magnetic Resonance Imaging* ; Male ; Middle Aged ; Muscle Neoplasms/diagnostic imaging ; Muscle Neoplasms/pathology* ; Reproducibility of Results ; Retrospective Studies ; Sarcoma, Alveolar Soft Part/diagnosis* ; Sarcoma, Alveolar Soft Part/secondary
Sarcoma ; Soft tissues ; Neoplasm ; Soft tissues ; MR imaging
OBJECTIVE: To present the MR and angiographic findings of alveolar soft part sarcoma (ASPS). DESIGN AND PATIENTS: MR examinations (12 tumors of 10 patients) of ASPS performed at multiple hospitals were retrospectively reviewed. The tumors were found in the thigh (n=4), lower leg (n=4), femur (n=2, local metastasis), scalp (n=1) and arm (n=1). The MR signal characteristics including signal intensity, homogeneity and signal void of lesions and bony invasion including direct invasion or local metastasis were evaluated. Angiographic findings (n=4) and post-embolotherapy follow-up MR imaging (n=2) findings were also assessed. RESULTS: Local bony metastasis was found in two cases. Seven tumors showed heterogeneous high signal intensity on T - and T2-weighted images with good enhancement. One tumor had a very high signal on T1-weighted images. Eight tumors (67%) showed numerous signal voids in or near the tumors. All four angiographic studies showed numerous enlarged vessels, arteriovenous shunts and delayed washout. Two cases mimicked arteriovenous malformations on angiographic studies but MR images demonstrated solid soft tissue components as well as tortuous vessels. CONCLUSIONS: High signal on T1 -weighted image and numerous signal voids are highly suggestive of ASPS, although they are not universal as has been suggested and arteriovenous malformation should be included in the differential diagnosis. Local bony metastases in ASPS were seen in two cases and should be carefully investigated
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1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Orthopedic Surgery (정형외과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Pathology (병리학교실) > 1. Journal Papers
Yonsei Authors
Suh, Jin Suck(서진석) ORCID logo https://orcid.org/0000-0001-9455-9240
Shin, Kyoo Ho(신규호)
Yang, Woo Ick(양우익) ORCID logo https://orcid.org/0000-0002-6084-5019
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