68 Ga-DOTA-FAPI-04 PET/CT in the Detection of Thoracic SMARCA4-Deficient Undifferentiated Tumor.

Shen, Xiuling; Yang, Zhi; Li, Nan · Clin Nucl Med · 2023

case_report · Level V

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Abstract

Thoracic SMARCA4-deficient undifferentiated tumor (SMARCA4-UT) is a rare malignant disease. We present the case of a 56-year-old woman with thoracic SMARCA4-UT presenting as a mediastinal mass who underwent 68 Ga-DOTA-FAPI-04 PET/CT imaging. Intense 68 Ga-DOTA-FAPI-04 uptake was observed in the primary tumor and lymph node metastases. After 7 cycles of immune checkpoint inhibitor plus chemotherapy, the patient underwent mediastinal mass resection, and postoperative pathology confirmed a complete pathologic response. This case may provide valuable insights into the diagnosis and monitoring of the treatment response of thoracic SMARCA4-UT.

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