18F-FDG PET/CT findings of paratesticular alveolar rhabdomyosarcoma

Cancer Innovation Pub Date : 2024-04-08 DOI:10.1002/cai2.121
Xueqi Chen, Jiayin Shou, Shanshi Li, Yan Fan, Jianhua Zhang
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Abstract

Rhabdomyosarcoma (RMS) originates from primitive mesenchymal cells and is the most common soft tissue tumor in childhood. 18F-fluoro-deoxyglucose (18F-FDG) positron emission tomography (PET)/computed tomography (CT) has been reported to be valuable in RMS staging and risk stratification. Paratesticular RMS is a relatively uncommon form of RMS, most of which are of the embryonal histologic type. Paratesticular alveolar RMS is associated with aggressive behavior, high metastatic potential, and poor outcomes. To the best of our knowledge, 18F-FDG PET/CT imaging findings of paratesticular alveolar RMS have never been described. Here, we report on a 16-year-old boy's rare paratesticular alveolar RMS with multiple metastases and its findings on 18F-FDG PET/CT. This case also demonstrates the potential value of 18F-FDG PET/CT in RMS staging and treatment decisions, and may aid in the differential diagnosis.

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睾丸旁腺泡横纹肌肉瘤的 18F-FDG PET/CT 发现
横纹肌肉瘤(RMS)起源于原始间充质细胞,是儿童时期最常见的软组织肿瘤。据报道,18F-氟脱氧葡萄糖(18F-FDG)正电子发射断层扫描(PET)/计算机断层扫描(CT)对横纹肌肉瘤的分期和风险分层很有价值。睾丸旁RMS是一种相对少见的RMS,其中大多数属于胚胎组织学类型。睾丸旁肺泡型RMS具有侵袭性、高转移潜能和不良预后。据我们所知,18F-FDG PET/CT 对睾丸旁肺泡型 RMS 的成像结果从未有过描述。在此,我们报告了一名16岁男孩罕见的伴有多处转移的睾丸旁肺泡型RMS及其18F-FDG PET/CT成像结果。该病例还证明了18F-FDG PET/CT在RMS分期和治疗决策中的潜在价值,并有助于鉴别诊断。
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