■恶性病因在70-80％的症状性腹膜后肿块中发现。组织学是诊断和治疗所必需的。有关内窥镜超声（EUS）引导的组织采集（EUS-GTA）的信息很少用于腹膜后肿块。本研究旨在评估EUS-GTA诊断腹膜后肿块的病理结果。
■这次回顾展，多中心研究涉及来自5个护理中心的患者。所有接受EUS评估的腹膜后肿块患者均被纳入。我们记录了人口统计学和临床特征，质量的位置和大小，针头类型（FNA/FNB），和手术相关的并发症。
■共纳入43例患者。中位年龄为50.5岁（范围：23-83岁），女性22人(51.2%)。首发症状为腹痛23例（52.3%），体重减轻11例（25%）。33例（75％）患者的初始成像是通过计算机断层扫描进行的。67.5%(29/43)的病例达到EUS-GTA诊断。最常见的组织学诊断是癌，25.5%（11/43）。在31（72％）中发现了恶性病因：20是腹膜后的原发性肿瘤，和11转移。在有转移的患者中，避免了手术，并表明了药物治疗。未报告不良事件。
■EUS和EUS-GTA通常可以提供准确的组织诊断，并显着影响后续管理。
UNASSIGNED: Malignant etiologies are found in 70-80% of symptomatic retroperitoneal masses. Histology is required for diagnosis and treatment. Information about endoscopic ultrasound (EUS)-guided tissue acquisition (EUS-GTA) is scant for retroperitoneal masses. This
study aimed to assess the pathology results of EUS-GTA for diagnosing retroperitoneal masses.
UNASSIGNED: This retrospective, multicenter
study involved patients from 5 care centers. All patients with retroperitoneal masses who underwent EUS evaluation were enrolled. We recorded demographic and clinical characteristics, location and size of the mass, type of needle (FNA/FNB), and complications related to the procedure.
UNASSIGNED: A total of 43 patients were included. The median age was 50.5 (range: 23-83) years, and 22 (51.2%) were female. The initial symptom was abdominal pain in 23 (52.3%) cases and weight loss in 11 (25%). Initial imaging was by computed tomography in 33 (75%) patients. Diagnosis with EUS-GTA was reached in 67.5% (29/43) cases. The most frequent histological diagnosis was carcinoma, in 25.5% (11/43). A malignant etiology was found in 31 (72%): 20 were primary tumors from the retroperitoneum, and 11 were metastases. In patients with metastasis, surgery was avoided and medical treatment was indicated. No adverse events were reported.
UNASSIGNED: EUS and EUS-GTA can frequently provide accurate tissue diagnosis and significantly impact the subsequent management.
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