Evaluation of Treatment Response in Retroperitoneal Alveolar Soft Part Sarcoma Using ¹⁸F-FDG PET/CT

Yuei JM, Hwang I, Won KS, Song BI and Kim HW

Department of Nuclear Medicine, Keimyung University Dongsan Medical Center, South Korea
Department of Pathology, Keimyung University School of Medicine, South Korea

^*Correspondance to: Hae Won Kim 

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Abstract:

Alveolar Soft Part Sarcoma (ASPS) is a rare sarcoma predominantly presenting as a painless mass in the lower limbs. This report presents the ¹⁸F-FDG PET/CT findings of ASPS in a 17-year-old woman with a painless abdominal mass. Initial ¹⁸F-FDG PET/CT showed a hypermetabolic mass in the retroperitoneum and a few hypermetabolic lung nodules, suspicious of metastases. After treatment with sunitinib and surgery, a subsequent ¹⁸F-FDG PET/CT revealed complete resolution of the tumors. Following the detection of recurrence, the patient underwent treatment with nivolumab/ ipilimumab, leading to complete resolution as demonstrated ¹⁸F-FDG PET/CT imaging.

Keywords:

Alveolar soft part sarcoma; Retroperitoneum; PET/CT; ¹⁸F-FDG; Chemotherapy

Cite the Article:

Yuei JM, Hwang I, Won KS, Song BI, Kim HW. Evaluation of Treatment Response in Retroperitoneal Alveolar Soft Part Sarcoma Using ¹⁸F-FDG PET/ CT. Clin Case Rep Int. 2024; 8: 1664.