ArticleCase reports in oncology
Contrast-Enhanced Ultrasound of Metastatic Clear Cell Sarcoma of the Liver: A Case Report and Review of the Literature.
Article in Case reports in oncology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: Clear cell sarcoma (CCS) is a rare malignant soft tissue tumor derived from neural crest cells, and it exhibits a high tendency for recurrence and metastasis. Distant metastasis significantly affects the prognosis. The incidence of liver metastasis from CCS is very low, and related contrast-enhanced ultrasound imaging reports are scarce. Case Report: We herein report a case involving a 23-year-old Tibetan man who was admitted to the hospital with swelling, pain, and limited movement of the right knee joint. Imaging revealed a tumor in the right knee, and preoperative examinations detected multiple liver lesions. Contrast-enhanced ultrasound showed high enhancement with a thick rim and uneven iso-enhancement in the center during the arterial phase, slow washout of the rim in the portal to delayed phases, and uneven low enhancement centrally. Based on these imaging findings and the patient's history, hepatic tuberculosis was considered, although a tumor could not be ruled out. Laboratory tests - including routine blood, liver function - were normal, and most tumor markers were normal except neuron-specific enolase. The patient underwent surgical resection of the knee tumor, and pathological diagnosis confirmed CCS. The liver lesions were further evaluated with contrast-enhanced computed tomography and enhanced magnetic resonance imaging, but a definitive diagnosis remained elusive. Ultimately, ultrasound-guided needle biopsy confirmed liver metastasis from CCS. Conclusion: Contrast-enhanced ultrasound has a good effect on the diagnosis of liver metastases. Combining with the relevant medical history of the patient or identifying the primary lesion can increase diagnostic confidence.
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